掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

DOI： 10.1002/hbm.25892

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その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1002/hbm.25892

掲載種別：研究論文（学術雑誌）   出版者・発行元：American Physiological Society  

Perceptual learning is not always specific to the trained task and stimuli. We demonstrate that both continuous attended sensory input and improved WM capacity can be used to enhance tactile angle discrimination (TAD) ability. Moreover, WM capacity improvement is important in generalizing the training effect to the TAD ability. These findings contribute to understanding the mechanism of perceptual learning generalization across tasks.

DOI： 10.1152/jn.00529.2021

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掲載種別：研究論文（学術雑誌）   出版者・発行元：American Psychological Association (APA)  

DOI： 10.1037/emo0001040

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

Abstract

Previous studies have paid special attention to the relationship between local features (e.g., raised dots) and human roughness perception. However, the relationship between global features (e.g., curved surface) and haptic roughness perception is still unclear. In the present study, a series of roughness estimation experiments was performed to investigate how global features affect human roughness perception. In each experiment, participants were asked to estimate the roughness of a series of haptic stimuli that combined local features (raised dots) and global features (sinusoidal-like curves). Experiments were designed to reveal whether global features changed their haptic roughness estimation. Furthermore, the present study tested whether the exploration method (direct, indirect, and static) changed haptic roughness estimations and examined the contribution of global features to roughness estimations. The results showed that sinusoidal-like curved surfaces with small periods were perceived to be rougher than those with large periods, while the direction of finger movement and indirect exploration did not change this phenomenon. Furthermore, the influence of global features on roughness was modulated by local features, regardless of whether raised-dot surfaces or smooth surfaces were used. Taken together, these findings suggested that an object’s global features contribute to haptic roughness perceptions, while local features change the weight of the contribution that global features make to haptic roughness perceptions.

DOI： 10.1007/s00221-021-06289-0

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その他リンク： https://link.springer.com/article/10.1007/s00221-021-06289-0/fulltext.html

掲載種別：研究論文（学術雑誌）   出版者・発行元：Frontiers Media SA  

Researchers have suggested that infants exhibiting baby schema are considered cute. These similar studies have mainly focused on changes in overall baby schema facial features. However, whether a change in only eye size affects the perception of cuteness across different facial expressions and ages has not been explicitly evaluated until now. In the present study, a paired comparison method and 7-point scale were used to investigate the effects of eye size on perceived cuteness across facial expressions (positive, neutral, and negative) and ages (adults and infants). The results show that stimuli with large eyes were perceived to be cuter than both unmanipulated eyes and small eyes across all facial expressions and age groups. This suggests not only that the effect of baby schema on cuteness is based on changes in a set of features but also that eye size as an individual feature can affect the perception of cuteness.

DOI： 10.3389/fpsyg.2021.674456

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

DOI： 10.1016/j.neulet.2021.136393

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Inderscience Publishers  

DOI： 10.1504/ijma.2022.123892

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

The human brain continuously generates predictions of incoming sensory input and calculates corresponding prediction errors from the perceived inputs to update internal predictions. In human primary somatosensory cortex (area 3b), different cortical layers are involved in receiving the sensory input and generation of error signals. It remains unknown, however, how the layers in the human area 3b contribute to the temporal prediction error processing. To investigate prediction error representation in the area 3b across layers, we acquired layer-specific functional magnetic resonance imaging (fMRI) data at 7T from human area 3b during a task of index finger poking with no-delay, short-delay and long-delay touching sequences. We demonstrate that all three tasks increased activity in both superficial and deep layers of area 3b compared to the random sensory input. The fMRI signal was differentially modulated solely in the deep layers rather than the superficial layers of area 3b by the delay time. Compared with the no-delay stimuli, activity was greater in the deep layers of area 3b during the short-delay stimuli but lower during the long-delay stimuli. This difference activity features in the superficial and deep layers suggest distinct functional contributions of area 3b layers to tactile temporal prediction error processing. The functional segregation in area 3b across layers may reflect that the excitatory and inhibitory interplay in the sensory cortex contributions to flexible communication between cortical layers or between cortical areas.

DOI： 10.1016/j.neuroimage.2021.118867

PubMed

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掲載種別：研究論文（学術雑誌）   出版者・発行元：SAGE Publications  

Although previous studies have shown that semantic multisensory integration can be differentially modulated by attention focus, it remains unclear whether attentionally mediated multisensory perceptual facilitation could impact further cognitive performance. Using a delayed matching-to-sample paradigm, the present study investigated the effect of semantically congruent bimodal presentation on subsequent unisensory working memory (WM) performance by manipulating attention focus. The results showed that unisensory WM retrieval was faster in the semantically congruent condition than in the incongruent multisensory encoding condition. However, such a result was only found in the divided-modality attention condition. This result indicates that a robust multisensory representation was constructed during semantically congruent multisensory encoding with divided-modality attention; this representation then accelerated unisensory WM performance, especially auditory WM retrieval. Additionally, an overall faster unisensory WM retrieval was observed under the modality-specific selective attention condition compared with the divided-modality condition, indicating that the division of attention to address two modalities demanded more central executive resources to encode and integrate crossmodal information and to maintain a constructed multisensory representation, leaving few resources for WM retrieval. Additionally, the present finding may support the amodal view that WM has an amodal central storage component that is used to maintain modal-based attention-optimized multisensory representations.

DOI： 10.1177/03010066211052943

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その他リンク： http://journals.sagepub.com/doi/full-xml/10.1177/03010066211052943

掲載種別：研究論文（学術雑誌）   出版者・発行元：IOP Publishing  

DOI： 10.1088/1741-2552/ac2c9e

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その他リンク： https://iopscience.iop.org/article/10.1088/1741-2552/ac2c9e/pdf

掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

DOI： 10.1109/icma52036.2021.9512762

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掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

DOI： 10.1109/icma52036.2021.9512687

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掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

DOI： 10.1109/icma52036.2021.9512736

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掲載種別：研究論文（学術雑誌）   出版者・発行元：American Association for the Advancement of Science (AAAS)  

In the past few years, we have gained a better understanding of the information processing mechanism in the human brain, which has led to advances in artificial intelligence and humanoid robots. However, among the various sensory systems, studying the somatosensory system presents the greatest challenge. Here, we provide a comprehensive review of the human somatosensory system and its corresponding applications in artificial systems. Due to the uniqueness of the human hand in integrating receptor and actuator functions, we focused on the role of the somatosensory system in object recognition and action guidance. First, the low-threshold mechanoreceptors in the human skin and somatotopic organization principles along the ascending pathway, which are fundamental to artificial skin, were summarized. Second, we discuss high-level brain areas, which interacted with each other in the haptic object recognition. Based on this close-loop route, we used prosthetic upper limbs as an example to highlight the importance of somatosensory information. Finally, we present prospective research directions for human haptic perception, which could guide the development of artificial somatosensory systems.

DOI： 10.34133/2021/9843259

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その他リンク： http://downloads.spj.sciencemag.org/cbsystems/2021/9843259.xml

掲載種別：研究論文（学術雑誌）   出版者・発行元：SAGE Publications  

Working memory refers to the cognitive capacity to temporarily store and manipulate information from multiple sensory domains. Recent studies have shown that cognitive training can improve performance in both visual working memory and tactile working memory tasks. However, it is still unclear whether the effects of training can be transferred from one sensory modality to another. The current study assessed whether the training effect of the tactile orientation sequence task could transfer to visual orientation sequence and visuospatial working memory tasks. The results showed that participants’ accuracy in the tactile orientation sequence task was significantly increased after 9 days of training compared with that before training. Remarkably, participants’ accuracy in both the visual orientation sequence task and the visuospatial task was significantly improved after 9 days of training. These results suggest that it is possible to improve visual working memory through a transfer effect from tactile task training without practice in the visual domain, which opens a wide range of applications for tactile orientation sequence tasks.

DOI： 10.1177/21582440211031549

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その他リンク： http://journals.sagepub.com/doi/full-xml/10.1177/21582440211031549

掲載種別：研究論文（学術雑誌）   出版者・発行元：MDPI AG  

Touch shape discrimination is not only closely related to tactile mechanoreceptors but also higher cognitive function. However, previous shape discrimination methods are difficult to complete in a short time, and the devices are complicated to operate and not user-friendly for nonprofessionals. Here, we propose a new method, the evaluation quantity of which is the angle discrimination threshold. In addition, to make this method easy to use for nonprofessionals, we designed a haptic angle sorting system, including the device and software. To evaluate this method, the angle sorting and two-angle discrimination experiments were compared, and it was found that participants spent significantly less time in the former experiment than in the latter. At the same time, there is a strong correlation between the performance of angle sorting and two-angle discrimination, which shows that the angle threshold obtained by the new method can also be used to evaluate the ability of touch discrimination. Moreover, the angle sorting results of different age groups also further demonstrate the feasibility of the method. The efficiency of this new method and the effectiveness of the system also provide a convenient means for evaluating haptic shape discrimination, which may have potential clinical application value in the early diagnosis of peripheral neuropathy and even in the evaluation of cognitive function.

DOI： 10.3390/app11157049

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

DOI： 10.1016/j.neuroimage.2021.117754

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Institute of Electrical and Electronics Engineers (IEEE)  

DOI： 10.1109/toh.2021.3077882

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Inderscience Publishers  

DOI： 10.1504/ijma.2021.115241

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掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

DOI： 10.1109/icedme52809.2021.00046

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

DOI： 10.1002/brb3.2033

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その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1002/brb3.2033

掲載種別：研究論文（学術雑誌）  

DOI： 10.1299/jsmecs.2021.59.01a1

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掲載種別：研究論文（学術雑誌）  

DOI： 10.1299/jsmecs.2021.59.01a2

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Informa UK Limited  

DOI： 10.1080/20445911.2021.1883032

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

DOI： 10.1016/j.biopsycho.2020.107995

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Frontiers Media SA  

Neuronal excitation and inhibition occur in the brain at the same time, and brain activation reflects changes in the sum of excitation and inhibition. This principle has been well-established in lower-level sensory systems, including vision and touch, based on animal studies. However, it is unclear how the somatosensory system processes the balance between excitation and inhibition. In the present ERP study, we modified the traditional spatial attention paradigm by adding double stimuli presentations at short intervals (i.e., 10, 30, and 100 ms). Seventeen subjects participated in the experiment. Five types of stimulation were used in the experiment: a single stimulus (one raised pin for 40 ms), standard stimulus (eight pins for 40 ms), and double stimuli presented at intervals of 10, 30, and 100 ms. The subjects were asked to attend to a particular finger and detect whether the standard stimulus was presented to that finger. The results showed a clear attention-related ERP component in the single stimulus condition, but the suppression components associated with the three interval conditions seemed to be dominant in somatosensory areas. In particular, we found the strongest suppression effect in the ISI-30 condition (interval of 30 ms) and that the suppression and enhancement effects seemed to be counterbalanced in both the ISI-10 and ISI-100 conditions (intervals of 10 and 100 ms, respectively). This type of processing may allow humans to easily discriminate between multiple stimuli on the same body part.

DOI： 10.3389/fninf.2020.571369

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

Attention is composed of three distinct attentional networks: alerting, orienting, and executive control. Previous studies have confirmed that Parkinson's disease (PD) is associated with executive control deficits; however, the interactions among the three attentional networks and the influence of sleep disturbance in PD patients have not been investigated. Herein, the efficiencies for the three attentional networks and their interactions were evaluated using the revised attention network test. The results showed a significantly slower response and lower accuracy in the PD group than in the normal control group and a significantly slower response and lower accuracy in PD patients with sleep disturbance (PDS) than in PD patients without sleep disturbance (PDnS), which indicates a response deficit in PD and worsening in PDS. Additionally, the executive control efficiency was reduced in both PDS and PDnS, and significantly higher alerting efficiency and lower orienting efficiency were found in PDS. Furthermore, largely changed interactions and correlation patterns of attentional networks were found in PDS but not in PDnS. These results suggested that attentional networks were impaired in PD patients, particularly in those affected by sleep disturbances, and that PDS might establish special connections between attentional networks to compensate for cognitive dysfunction.

DOI： 10.1016/j.neures.2021.05.004

PubMed

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

DOI： 10.1002/hbm.25243

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その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1002/hbm.25243

掲載種別：研究論文（学術雑誌）   出版者・発行元：SAGE Publications  

Attentional processes play a complex and multifaceted role in the integration of input from different sensory modalities. However, whether increased attentional load disrupts the audiovisual (AV) integration of common objects that involve semantic content remains unclear. Furthermore, knowledge regarding how semantic congruency interacts with attentional load to influence the AV integration of common objects is limited. We investigated these questions by examining AV integration under various attentional-load conditions. AV integration was assessed by adopting an animal identification task using unisensory (animal images and sounds) and AV stimuli (semantically congruent AV objects and semantically incongruent AV objects), while attentional load was manipulated by using a rapid serial visual presentation task. Our results indicate that attentional load did not attenuate the integration of semantically congruent AV objects. However, semantically incongruent animal sounds and images were not integrated (as there was no multisensory facilitation), and the interference effect produced by the semantically incongruent AV objects was reduced by increased attentional-load manipulations. These findings highlight the critical role of semantic congruency in modulating the effect of attentional load on the AV integration of common objects.

DOI： 10.1177/2041669520981096

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その他リンク： http://journals.sagepub.com/doi/full-xml/10.1177/2041669520981096

記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1299/transjsme.19-00437

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

When humans perceive a sensation, their brains integrate inputs from sensory receptors and process them based on their expectations. The mechanisms of this predictive coding in the human somatosensory system are not fully understood. We fill a basic gap in our understanding of the predictive processing of somatosensation by examining the layer-specific activity in sensory input and predictive feedback in the human primary somatosensory cortex (S1). We acquired submillimeter functional magnetic resonance imaging data at 7T (n = 10) during a task of perceived, predictable, and unpredictable touching sequences. We demonstrate that the sensory input from thalamic projects preferentially activates the middle layer, while the superficial and deep layers in S1 are more engaged for cortico-cortical predictive feedback input. These findings are pivotal to understanding the mechanisms of tactile prediction processing in the human somatosensory cortex.

DOI： 10.1126/sciadv.aav9053

PubMed

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Bentham Science Publishers Ltd.  

DOI： 10.2174/2213385205666170801151630

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Bentham Science Publishers Ltd.  

DOI： 10.2174/2213385205666170724143429

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.3758/s13414-017-1453-z

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.3389/fnagi.2017.00378

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.3389/fnagi.2017.00239

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1177/0301006616673850

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その他リンク： http://journals.sagepub.com/doi/full-xml/10.1177/0301006616673850

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1177/0301006616673850

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.18632/oncotarget.20598

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記述言語：英語   掲載種別：論文集(書籍)内論文   出版者・発行元：IGI Global  

Functional magnetic resonance imaging (fMRI) has been widely used to study human tactile perception. To reveal many unsolved problems to human tactile perception, developing complex and fMRI-compatible stimulation devices are crucial for tactile perception research. These stimulation devices, combined with functional magnetic resonance imaging (fMRI), can assist researchers in analyzing human brain activity. Through analyzing human brain activity, researchers can clarify how the human brain controls the body. Meanwhile, these device scan provide the best rehabilitation program for patients. This chapter presents previous fMRI-compatible stimulation devices, including texture stimulation, shape stimulation, vibrotactile stimulation, etc., which involve the hands, face, ears, legs and other parts of the body. In this chapter, we examine the design of the devices in greater detail. Finally, we summarize the characteristics of these devices and create an outlook for future fMRI-compatible devices.

DOI： 10.4018/978-1-5225-0925-7.ch012

Scopus

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.2174/2213385204666160618080622

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.2174/2213385204666160503161135

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1007/s00221-016-4562-3

Web of Science

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.3389/fnhum.2016.00054

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.3389/fnagi.2015.00256

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.2174/2213385205666170117143856

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.neubiorev.2015.11.002

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

Web of Science

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Bentham Science Publishers Ltd.  

DOI： 10.2174/2213385203666150703164036

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1097/WNR.0000000000000368

Web of Science

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：SAGE PUBLICATIONS INC  

Objective: The objective of this study was to investigate the characteristics of pedal errors by younger and older drivers that relate to sudden unintended acceleration (SUA) accidents.
Background: SUA during an accident is a serious issue that causes numerous critical injuries and deaths every year. Previous studies have indicated that the major factor in these accidents is pedal error; however, the characteristics that relate to SUA accidents in older drivers remain unclear.
Method: Twenty younger drivers (YDs; 23.1 0.22 years) and 20 older drivers (ODs; 68.9 1.16 years) used either one or both feet to participate in six tasks that involved pressing accelerator or brake pedals in response to various visual stimuli.
Results: Both the reaction times (RTs) and the pedal error rates of the YD and OD groups significantly increased with the difficulty of the task. Other than the simple reaction condition, we found that the pedal error rates were significantly higher for the OD group than for the YD group; the OD group also demonstrated longer RTs. Moreover, the rates of accelerator error were consistently two or three times higher than the rates of brake error in both the YD and OD groups.
Conclusion: For the older population, the use of the left foot to operate the brake pedal and the right foot to operate the accelerator could decrease the accelerator error rate and may reduce the rate of SUA-related accidents that are caused by pedal error.

DOI： 10.1177/0018720813487200

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER IRELAND LTD  

Visual word expertise is typically associated with enhanced ventral occipito-temporal (vOT) cortex activation in response to written words. Previous study utilized a passive viewing task and found that vOT response to written words was significantly stronger in literate compared to the illiterate subjects. However, recent neuroimaging findings have suggested that vOT response properties are highly dependent upon the task demand. Thus, it is unknown whether literate adults would show stronger vOT response to written words compared to illiterate adults during other cognitive tasks, such as perceptual matching. We addressed this issue by comparing vOT activations between literate and illiterate adults during a Chinese character and simple figure matching task. Unlike passive viewing, a perceptual matching task requires active shape comparison, therefore minimizing automatic word processing bias. We found that although the literate group performed better at Chinese character matching task, the two subject groups showed similar strong vOT responses during this task. Overall, the findings indicate that the vOT response to written words is not affected by expertise during a perceptual matching task, suggesting that the association between visual word expertise and vOT response may depend on the task demand. (C) 2014 Elsevier Ireland Ltd. All rights reserved.

DOI： 10.1016/j.neulet.2014.02.032

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：SAGE PUBLICATIONS LTD  

In this manuscript, using a novel wide-view visual presentation system that we developed for vision research and functional magnetic resonance imaging (fMRI), we studied contrast response functions in regions of the brain that are central and peripheral to the entire set of visual areas (V1, V2, V3, V3A, MT+), regions that have not been all investigated in previous vision research. Under the stimulus conditions which were 0-20 deg, 20-40 deg, and 40-60 deg eccentricity black-and-white checkerboard patterns, we measured the blood oxygenation level-dependent fMRI contrast response at five contrast levels (6, 12, 24, 48, and 96%) in the visual areas. On the basis of these data, the central and pericentral visual areas had low-contrast gain, whereas the peripheral visual areas had high-contrast gain. In addition, our results showed that the signals fundamentally shift during visual processing through posterior visual cortical areas (V1, V2, and V3) to superior visual cortical areas (V3A and MT+).

DOI： 10.1068/p7640

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

In everyday life, our brains integrate various kinds of information from different modalities to perceive our complex environment. Temporal synchrony of audiovisual stimuli is required for audiovisual integration. Many studies have shown that temporal asynchrony of visual-auditory stimuli can influence the interaction between visual and auditory stimulus, however, the multisensory mechanisms of asynchrony inputs were not well understood. In present study, visual and auditory stimuli onset asynchrony (SOA= +/- 250 ms, +/- 200 ms, +/- 150 ms, +/- 100 ms, +/- 50 ms, 0 ms), only the auditory stimulus was attended. From the behavioral results, the responses to temporal asynchronous audiovisual stimuli were more accurate than unimodal auditory stimuli. The most significant enhancement was SOA = -100ms condition (the visual preceding), which reaction time was the fastest. These results revealed the basis of audiovisual interaction in which audiovisual stimuli presented with different SOA. The temporal alignment of visual-auditory stimuli can enhance the auditory detection. The study can offer basic theory for artificial intelligence.

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.7144/sgf.21.1

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

The repetition of a stimulus task reduces the neural activity within certain cortical regions responsible for working memory (WM) processing. Although previous evidence has shown that repeated vibrotactile stimuli reduce the activation in the ventrolateral prefrontal cortex, whether the repeated tactile spatial stimuli triggered the priming effect correlated with the same cortical region remains unclear. Therefore, we used event-related functional magnetic resonance imaging (fMRI) and a delayed match-to-sample task to investigate the contributions of the priming effect to tactile spatial WM processing. Fourteen healthy volunteers were asked to encode three tactile angle stimuli during the encoding phase and one tactile angle stimulus during the recognition phase. Then, they answered whether the last angle stimulus was presented during the encoding phase. As expected, both the Match and Non-Match tasks activated a similar cerebral network. The critical new finding was decreased brain activity in the left inferior frontal gyrus (IFG), the right posterior parietal cortex (PPC) and bilateral medial frontal gyri (mFG) for the match task compared to the Non-Match task. Therefore, we suggest that the tactile priming engaged repetition suppression mechanisms during tactile angle matching, and this process decreased the activation of the fronto-parietal circuit, including IFG, mFG and PPC.

DOI： 10.3389/fnhum.2014.00926

PubMed

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担当区分：筆頭著者  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.neulet.2013.07.022

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：PUBLIC LIBRARY SCIENCE  

This article aims to investigate whether auditory stimuli in the horizontal plane, particularly originating from behind the participant, affect audiovisual integration by using behavioral and event-related potential (ERP) measurements. In this study, visual stimuli were presented directly in front of the participants, auditory stimuli were presented at one location in an equidistant horizontal plane at the front (0 degrees, the fixation point), right (90 degrees), back (180 degrees), or left (270 degrees) of the participants, and audiovisual stimuli that include both visual stimuli and auditory stimuli originating from one of the four locations were simultaneously presented. These stimuli were presented randomly with equal probability; during this time, participants were asked to attend to the visual stimulus and respond promptly only to visual target stimuli (a unimodal visual target stimulus and the visual target of the audiovisual stimulus). A significant facilitation of reaction times and hit rates was obtained following audiovisual stimulation, irrespective of whether the auditory stimuli were presented in the front or back of the participant. However, no significant interactions were found between visual stimuli and auditory stimuli from the right or left. Two main ERP components related to audiovisual integration were found: first, auditory stimuli from the front location produced an ERP reaction over the right temporal area and right occipital area at approximately 160-200 milliseconds; second, auditory stimuli from the back produced a reaction over the parietal and occipital areas at approximately 360-400 milliseconds. Our results confirmed that audiovisual integration was also elicited, even though auditory stimuli were presented behind the participant, but no integration occurred when auditory stimuli were presented in the right or left spaces, suggesting that the human brain might be particularly sensitive to information received from behind than both sides.

DOI： 10.1371/journal.pone.0066402

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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担当区分：筆頭著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Japan Ergonomics Society  

人間の視野に，一定条件の運動視覚情報を与えることによって，身体が静止状態であるにもかかわらず，自己運動感覚を引き起こすことがある．このことを視覚誘導自己運動感覚と言う．視覚誘導自己運動感覚（Vection）は自己運動感覚の方向によって，大きく二種類に分けられ，視覚誘導自己直線運動感覚（LV：Linear Vection）と視覚誘導自己回転運動感覚（CV：Circular Vection）がある．Vectionの誘導メカニズムを解明するには，時空間周波数と視野などの視覚刺激パラメータの依存性がよく研究されたが，Vectionの輝度依存性はまだ解明されていない．本研究では，大型平面液晶ディスプレイを用いて，LVの空間特性の輝度依存性について検討を行った．その結果，LVは視覚刺激の中心視野の平均輝度変化に有意差が見られ，周辺視野の輝度変化に依存しないことがわかった．

DOI： 10.5100/jje.49.18

CiNii Article

CiNii Books

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その他リンク： https://jlc.jst.go.jp/DN/JALC/10015737372?from=CiNii

記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：SPRINGER-VERLAG BERLIN  

In present paper, we described a novel wide-view visual presentation system for fMRI studies. To achieve a wide field view, a translucent spherical screen with a curvature radius of 30 mm was placed 30 mm away from the subjects' eyes. The subjects wore contact lenses that enabled them to focus on the screen, and the resulting visual field reached 120 degrees. Then, high resolution computer-generated images were projected onto the translucent hemispheric screen inside the MRI bore. Signal-to-noise ratio valuation experiment was performed to evaluate the clarity and quality of the MRI images. In addition, we successfully applied this visual presentation system to studies of visual retinotopic mapping and object perception neural function in the peripheral visual field. Our study demonstrated that the system is compatible with the MRI environment. Moreover, this system was more effective at mapping checkerboard stimuli in V1-V3, and successfully located several classical category-selective areas, including the face-selective area (FFA), occipital face area (OFA), house-selective area (PPA), transverse occipital sulcus (TOS), lateral occipital complex (LOC) in higher-level visual areas. In conclusion, the wide-view visual presentation system within the MRI environment can be applied to many kinds of fMRI studies of peripheral vision.

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

Alzheimer's Disease (AD) is the most common and destructive neurodegenerative disorder threatening old people. As a non-invasive way to assess brain function, the fMRI technique can be used to detect how the brain activity pattern of AD patients differ from that of age-matched elder controls (EC). We compared the brain activity pattern of AD and EC under three conditions: unimodal auditory stimuli, unimodal visual stimuli and bimodal audiovisual stimuli. It was found that patients with AD exhibit a more extensive but relatively weaker response than EC, and in every type of stimuli, the activated brain areas are dissimilar with EC. The limbic lobe of AD patients is universally silent while the hippocampal areas in EC are active. Moreover, compared with EC, AD patients show fewer activated regions for audiovisual integration, indicating impaired multisensory information processing and cognitive integration. The findings imply that fMRI can help with the diagnosis of AD even in the early stage.

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

The operation of the touch screen is a typical pointing movement. Because touch screens has such a wide range of applications, the users of touch screen will necessarily include people of all age groups The variation in physical and psychomotor capability between different age groups which affect touch screen performance should, therefore, be studied to facilitate the design of touch screen user interface is necessary. The goal of the study was to examine the effect of aging on pointing movements under restricted visual feedback conditions (i.e., full-vision, no feedback about hand movement, no feedback about target location, and no visual feedback of any type). In light of the fact that different age groups exhibit different kinds of movement behaviour patterns, suggestions for the design of touch screen user interface were outlined.

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

The present study examined the coding of retinal eccentricity spatial position in object selective cortex. Using a wide-view (about 120 degrees) visual presentation system developed for vision research and functional magnetic resonance imaging (fMRI), the subject were presented with face and house, which were centrally located along the horizontal and vertical meridian in 4 level of eccentricity degree. We investigated the BLOD response to stimuli in two regions in the ventral visual cortex, the fusiform face area (FFA), and the parahippocampal place area (PPA). The analysis further revealed the weaker BLOD response in the bigger eccentricity in both the FFA and PPA areas. Moreover, the FFA had much bigger neural activation than the PPA. However, the ratio relative to central position had no difference between face and house. Regions of the FFA had bigger neural response, and associated with central representation, compared to PPA had smaller neural response, and associated with more peripheral representation. These results suggested the neural response character in ventral visual areas influenced by inherent difference between face and house, and little by the eccentricity.

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：PUBLIC LIBRARY SCIENCE  

Top-down attention to spatial and temporal cues has been thoroughly studied in the visual domain. However, because the neural systems that are important for auditory top-down temporal attention (i.e., attention based on time interval cues) remain undefined, the differences in brain activity between directed attention to auditory spatial location (compared with time intervals) are unclear. Using fMRI (magnetic resonance imaging), we measured the activations caused by cue-target paradigms by inducing the visual cueing of attention to an auditory target within a spatial or temporal domain. Imaging results showed that the dorsal frontoparietal network (dFPN), which consists of the bilateral intraparietal sulcus and the frontal eye field, responded to spatial orienting of attention, but activity was absent in the bilateral frontal eye field (FEF) during temporal orienting of attention. Furthermore, the fMRI results indicated that activity in the right ventrolateral prefrontal cortex (VLPFC) was significantly stronger during spatial orienting of attention than during temporal orienting of attention, while the DLPFC showed no significant differences between the two processes. We conclude that the bilateral dFPN and the right VLPFC contribute to auditory spatial orienting of attention. Furthermore, specific activations related to temporal cognition were confirmed within the superior occipital gyrus, tegmentum, motor area, thalamus and putamen.

DOI： 10.1371/journal.pone.0049948

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1097/WNR.0b013e3283552b0f

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1002/hbm.21324

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1007/s00221-012-3094-8

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その他リンク： http://link.springer.com/article/10.1007/s00221-012-3094-8/fulltext.html

担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1007/s13670-012-0007-4

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1155/2012/961342

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.brainres.2011.10.052

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

The human brain can anatomically combine task-relevant information from different sensory pathways to form a unified perception; this process is called multisensory integration. The aim of the present study was to test whether the multisensory integration abilities of patients with mild cognitive impairment (MCI) and Alzheimer's disease (AD) differed from those of normal aged controls (NC). A total of 64 subjects were divided into three groups: NC individuals (n = 24), MCI patients (n = 19), and probable AD patients (n = 21). All of the subjects were asked to perform three separate audiovisual integration tasks and were instructed to press the response key associated with the auditory, visual, or audiovisual stimuli in the three tasks. The accuracy and response time (RT) of each task were measured, and the RTs were analyzed using cumulative distribution functions to observe the audiovisual integration. Our results suggest that the mean RT of patients with AD was significantly longer than those of patients with MCI and NC individuals. Interestingly, we found that patients with both MCI and AD exhibited adequate audiovisual integration, and a greater peak (time bin with the highest percentage of benefit) and broader temporal window (time duration of benefit) of multisensory enhancement were observed. However, the onset time and peak benefit of audiovisual integration in MCI and AD patients occurred significantly later than did those of the NC. This finding indicates that the cognitive functional deficits of patients with MCI and AD contribute to the differences in performance enhancements of audiovisual integration compared with NC.

DOI： 10.3233/JAD-2012-111070

PubMed

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.3233/JAD-2012-111070

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記述言語：英語  

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記述言語：日本語  

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記述言語：日本語  

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記述言語：日本語  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

DOI： 10.1016/j.jalz.2011.05.774

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その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1016/j.jalz.2011.05.774

担当区分：筆頭著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：The Japan Society of Mechanical Engineers  

In order to investigate the human characteristic on length perception between the thumb and four fingers, we developed a four-degree-of-freedom (4DOF) length display device which can adjust each four distances respectively. The 4DOF device was proofed by length perception experiment. The placement of 4 units of the 4DOF device arranges from fingertip trajectory experimental data. The position of 4 fingers basing on the thumb is changed by stepping motor. The experiment is that each length between the thumb and other four fingers is same length. The results suggested that the same trend of perceptual length by thumb and any other finger is underestimation. In addition, perceptual error around 70mm was the biggest.

DOI： 10.1299/kikaic.77.2336

CiNii Article

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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担当区分：筆頭著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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担当区分：筆頭著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1002/jmri.22404

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掲載種別：論文集(書籍)内論文  

The cognitive symptoms in early Alzheimer's disease (AD) involve problems with learning, memory or planning. Currently, no medical tests are available to conclusively diagnose dementia pre-mortem. Previous studies have demonstrated that the cognitive deficits of AD can be detected during a preclinical period with neuropsychological tests. This chapter's hypothesis is that cognitive deficit symptoms of AD are detectable using a combination of tactile, kinetic, cognitive, and functional MRI tasks in the earliest stages of the disease. The authors of this chapter offer a novel approach to investigate the early detection of AD with tactile procedures. This chapter introduces the development of two tactile pattern delivery devices. The first delivery device is MRI-compatible and can serve to investigate the underlying neural mechanisms of active and passive tactile pattern discrimination. The second delivery device is designed to investigate the characteristics of passive shape discrimination for psychological experiments. These devices may contribute to the early detection of AD with neuropsychological approaches. The ultimate goal of this research was to confirm the human ability of tactile shape discrimination and determine the differences between age-matched healthy individuals and AD patients. © 2011, IGI Global.

DOI： 10.4018/978-1-60960-559-9.ch011

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掲載種別：論文集(書籍)内論文  

With the rapid increase in the number of elderly people, the number of people with dementia is also increasing. The most common form of dementia is Alzheimer's disease, which accounts for 50-70% of all dementia cases. Until the present time, however, there was no effective early detection method for Alzheimer's disease. A recent study showed that brain glucose metabolism in healthy volunteers was different than glucose metabolism in Alzheimer's patients during the response to passive audiovisual stimulation. This result suggested that the mechanism of audiovisual integration in patients with Alzheimer's disease was influenced by the disease. In the present study, the authors investigated the effects of modality-specific selective attention on audiovisual integration using simple visual and auditory stimuli in healthy human subjects. Three different attentional instructions were accessed: (1) visual selective attention, in which subjects were instructed to focus their attention on visual stimuli; (2) auditory selective attention, in which subjects were instructed to focus their attention on auditory stimuli; and (3) audiovisual divided attention, in which subjects were instructed to focus their attention on both visual and auditory stimuli. The results showed that significant bimodal enhancement was present only in the divided attention condition, which is similar to the results of a previous study using complex semantic stimuli. Therefore, the authors conclude that stimulus complexity does not influence the modality-specific selective attention effects of audiovisual integration. A future study will examine the mechanism of audiovisual integration in patients with Alzheimer's disease using the same experimental design (using simple stimuli), which will hopefully help find a new method for the early detection of Alzheimer's disease. © 2011, IGI Global.

DOI： 10.4018/978-1-60960-559-9.ch010

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出版者・発行元：The Japan Society of Mechanical Engineers  

Driver safety is an important and often sensitive issue for seniors. Statistics show that the elderly are more likely than other drivers to receive traffic citations for failing to yield, turning improperly, and running red lights and stop signs all indications of decreased driving ability. Currently in Japan, half of the deceased in traffic accidents are elderly people. In present study, we focused on how the pedal placement affect on braking action in emergency. First, ten healthy young and ten elderly individuals were asked to perform a simple reaction experiment by foot. Then, the same subjects were instructed to complete a braking action experiment with different pedal placement condition. The results suggested that both simple reaction time and foot movement time of elderly subjects were significantly longer than that of young subjects. Moreover, the brake pedal force of elderly subjects was lower than that of young subjects. Thus, aging influenced both of simple reaction time and braking action in emergency. In addition, even the pedal placement changed characteristics of braking action of both young and elderly subjects, the most comfortable pedal placement of elderly subjects differed from young subjects.

DOI： 10.1299/kikaic.77.2062

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1068/p6264

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DOI： 10.1097/WNR.0b013e3283345f08

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担当区分：筆頭著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.3233/JAD-2010-100723

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1299/kikaic.76.936

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

There is a need to differentiate between patients with mild cognitive impairment (MCI) and Alzheimer's disease (AD) from normal-aged controls (NC) in the field of clinical drug discovery. In this study, we developed a tactile angle discrimination system and examined whether the ability to discriminate tactile angle differed between patients with MCI and AD and the NC group. Thirty-seven subjects were divided into three groups: NC individuals (n=14); MCI patients (n=10); and probable AD patients (n=13). All subjects were asked to differentiate the relative sizes of the reference angle (60°) and one of eight comparison angles by passive touch. The accuracy of angle discrimination was measured and the discrimination threshold was calculated. We discovered that there were significant differences in the angle discrimination thresholds of AD patients compared to the NC group. Interestingly, we also found that ability to discriminate tactile angle of MCI patients were significantly lower than that of the NC group. This is the first study to report that patients with MCI and AD have substantial performance deficits in tactile angle discrimination compared to the NC individuals. This finding may provide a monitor and therapeutic approach in AD diagnosis and treatment.

DOI： 10.3233/JAD-2010-100723

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

In this article, we introduced some topics relevant to neuromedical engineering and used several measurement methods. In the future, we will continue to develop new technologies and search for new ideas for diagnosing neuropathies. © 2010 IEEE.

DOI： 10.1109/ICCME.2010.5558882

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記述言語：日本語   出版者・発行元：一般社団法人 日本機械学会  

In this study, we pay attention to braking action in the emergency case and measure the driver's action characteristics in various conditions of pedal placement. Experimental results suggested that 1) in back condition Movement time and Moving time get shorter and the maximum displacement to peak value of the joint angle decreases, 2) in front condition Releasing time get shorter and the maximum displacement to peak value of the joint angle increases. Based on experimental results, we recommend that the most suitable horizontal placement of brake pedal may set between 50mm and 100mm to accelerator pedal. In addition, the depth placement of brake pedal may set between 0mm and 100mm to accelerator pedal.

DOI： 10.1299/kikaic.76.2300

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担当区分：筆頭著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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担当区分：筆頭著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：一般社団法人電子情報通信学会  

注意について,キュー刺激を手掛りとして使用した能動注意及びキュー刺激なしの受動注意に関する研究を行っている.視覚空間能動注意及び視覚時間能動注意は,今までの研究において,行動学実験と脳イメージング実験によって検討されてきた.本研究では,視覚能動注意時の脳活動及び聴覚能動注意時の脳活動の比較を検討するために,キュー刺激を用い,それぞれに視覚の空間と時間及び聴覚の空間と時間の能動注意実験を行ってfMRI実験中の被験者の反応時間と脳活動を記録した.また,従来研究と異なり,レスト課題を設けることによって,課題実施中における反応キーを押す指行動による脳活動を除去することにした.視覚注意課題間の反応時間と聴覚注意課題間の反応時間とを比較し,視覚能動注意実験と聴覚能動注意実験とともに,空間課題の平均反応時間は時間課題の平均反応時間より小さいことが分かった.また,聴覚注意実験の反応時間が視覚注意実験より長くなる結果が得られた.視覚空間能動注意課題と聴覚空間能動注意課題における脳イメージグ結果を比較し,前頭-頭頂の連合活動が一致していることが分かったが,視覚時間能動注意時には頭頂葉の活動が見られたのに対し,聴覚時間能動注意では前頭葉の運動野の活動のみが見られた.

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その他リンク： http://search.jamas.or.jp/link/ui/2009334734

記述言語：英語   掲載種別：研究論文（学術雑誌）  

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

Human area V1 offers an excellent opportunity to study, using functional MRI, a range of properties in a specific cortical visual area, whose borders are defined objectively and convergently by retinotopic criteria. Previous fMRI studies in VI retinotopic are typically used central and/or peri-central visual field stimulus. The retinotopic characteristics on human peripheral vision are still not well known.
In this study, we developed a new visual presentation system widest view (60 deg of eccentricity). The wide-view visual presentation system was made from nonmagnetic optical fibers and a contact lens, so can use in general clinical fMRI condition and the cost is lower. We used the newly wide view visual presentation system, firstly get a success in the world to identify human primary visual cortex (VI) of the eccentricity 60 deg. And we acquired the areal cortical magnification function for VI between the 0-60deg eccentricities was Mareal =272/(E+1.44)boolean AND 2. The mean cortical surface area of V1 between the 0-60deg eccentricities was about 2229mm boolean AND 2. Our results have well agreement with the using physiological, patients and anatomical measurements.
The analysis indicates that (1) the estimate of scaling factor in linear magnification factors is larger than previous studies which focus on central vision. (2) the estimate of the peripheral factor in dipolar model is too large to make the curve direction of the iso-eccentricity ring's in the periphery be the same as that on the center in VI.

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

Certain learning the symptoms of earliest Alzheimer's disease (AD) involved learning, memory or planning problems. Currently, no medical tests are available to diagnose AD conclusively pre-mortem. However, a large number of Kungsholmen Project studies used cognitive tasks (i.e. visuospatial tasks, language tasks, etc.) attempted to find the preclinical cognitive marks of AD. These studies convincingly demonstrate that the cognitive deficits of AD are possible to detect during a preclinical period spans several years. In addition, numerous neuropathological, electrophysiological and neuroimaging studies supports the hypothesis that the cognitive deficits in AD is related to a possible disconnection between cortical areas. In present article, we describe the present and future researches of early diagnosis method through cognitive and functional imaging testing to help with the clinical diagnosis.

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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担当区分：筆頭著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/S0386-1112(14)60213-2

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1299/kikaic.74.2585

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Ovid Technologies (Wolters Kluwer Health)  

DOI： 10.1097/wnr.0b013e32810f2de7

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記述言語：日本語   掲載種別：研究論文（その他学術会議資料等）   出版者・発行元：The Institute of Electrical Engineers of Japan  

In order to investigate the difference in cortical activations between reading letter strings in the normal direction and the reverse direction, an fMRI study was conducted. In this study, the cortical activations elicited by Japanese letter string reading and Chinese letter string reading were investigated. The subjects performed the normal direction reading task (read letter strings from left to right), and the reverse direction reading task (read letter strings from right to left). According to the experimental results, the activated brain regions during the normal and the reverse direction reading tasks were compared. It was found that visuospatial transformation was involved in the reverse direction reading task, while this function was not significant during the normal direction reading task. Furthermore, we found that there was no significant difference in cortical activation between Japanese and Chinese letter string readings.

DOI： 10.1541/ieejeiss.127.353

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その他リンク： https://jlc.jst.go.jp/DN/JALC/00290827561?from=CiNii

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

The study of optical illusion is an important method to elucidate the mechanism of visual perception. However, many details about the cause of optical illusions are still unclear. In this research, based on the characteristic of the physiological structure of the retina, we proposed an on-center receptive field model of the retina. Using this model, we simulated the distributions of the inducing field of some visual stimulus. Comparing to the past studies' results, the validity of the proposed model was proofed. Furthermore, we simulated the distributions of the inducing field of some typical illusions. The simulation results can explain these illusion phenomenon rationally. Therefore, it suggested that some of illusions are probably engendered by the distributions of the inducing field in the retina which generated by the illusions stimuli. The practicality of the proposed model was also verified.

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE  

In the present study we mainly aimed to investigate the function of the inferior frontal gyrus, by means of passively listening to Japanese words, nonsense words, English words, nonsense words respectively by Japanese subjects using functional magnetic resonance imaging (fMRI). English words and nonsense words activated the dorsal parts of bilateral inferior frontal cortex more extensive than Japanese words and nonsense words, which might imply the implicit silent repetition might take place during English stimuli listening for better perception. The ventral parts of left inferior frontal cortex were activated by Japanese and English words conditions than nonsense words conditions of the two languages confirms its function in lexical or semantic processing. We also found the activation of visual cortex by Japanese especially by the Japanese nonsense words than English, which may be correlated to the characteristic of Japanese in which the phoneme and grapheme are one-to-one mapping to some extent.

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

DOI： 10.1109/AMT.2005.1505339

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

In recent years, the remote control robots have used in various dangerous environments instead of human. Because there is a discrepancy between the physical and perceived distance, it is difficult for us to use the remote control robots. In order to solve this problem, we investigated the psychophysical characteristics of human distance perception. In this study, young and elder subjects estimate the actively and passively presented distance using upper arm. The experimental results offer the useful knowledge about improvements in the operation of remote control robots. ©2005 IEEE.

DOI： 10.1109/AMT.2005.1505260

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

This paper describes an approach to the measurement and analysis of Electroencephalogram (EEG) data to develop a brain- computer interface (BCI). The investigation of the serial information processing of human brain is very important for designing brain computer interfaces. Since EEG signals have a good temporal resolution and can be recorded noninvasively from the scalp, EEG has been used as a basic tool of the brain-computer interface. In this study, we measured EEG signals when subjects view, memorize, and recall the simple visual stimuli with directional information. As a result of the frequency analysis for the EEG signals, we found the task-related power change in particular cortical area. Based on this result, we discussed the information processing in the human visual systems and the applicability of the brain computer interface. ©2005 IEEE.

DOI： 10.1109/AMT.2005.1505261

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

DOI： 10.1109/AMT.2005.1505340

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出版者・発行元：計測自動制御学会  

Human visual and auditory systems have been evolving through the long history of human being and have attained very high performance. However, artificial systems for those are often poorer in performance despite of remarkable progress in their efficiency. In order to construct artificial systems with high performance such as human visual and auditory systems, it is necessary to elucidate the mechanisms of human visual and auditory systems. In order to investigate the characteristics of human visual and auditory advanced information processing, the authors have measured the advanced function of human brain related with the calculation processing. In this study, to construct the tasks measuring the ability of human calculation information processing, the characteristics of the visual and the auditory calculation information processing were measured with using the mental arithmetic problems as the visual and the auditory stimuli by psychological experiment. Furthermore, activated areas of human brain related with the calculation processing were also measured by functional magnetic resonance imaging (fMRI). Based on the measurement results, the authors discuss the difference between the visual and the auditory calculation information processing. The results of psychological experiment and fMRI will be significant the mechanism of visual and auditory information processing and to construct artificial systems.

DOI： 10.9746/sicetr1965.37.1003

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記述言語：日本語   出版者・発行元：公益社団法人日本放射線技術学会  

Using functional magnetic resonance imaging (fMRI), we investigated the activated areas of the human brain related with calculation processing as an advanced function of the human brain. Furthermore, we investigated differences in activation between visual and auditory calculation processing. The eight subjects (all healthy men)were examined on a clinical MR unit (1.5 tesla)with a gradient echo-type EPI sequence. SPM99 software was used for data processing. Arithmetic problems were used for the visual stimulus (visual image)as well as for the auditory stimulus (audible voice). The stimuli were presented to the subjects as follows: no stimulation, presentation of random figures, and presentation of arithmetic problems. Activated areas of the human brain related with calculation processing were the inferior parietal lobule, middle frontal gyrus, and inferior frontal gyrus. Comparing the arithmetic problems with the presentation of random figures, we found that the activated areas of the human brain were not differently affected by visual and auditory systems. The areas activated in the visual and auditory experiments were observed at nearly the same place in the brain. It is possible to study advanced functions of the human brain such as calculation processing in a general clinical hospital when adequate tasks and methods of presentation are used.

DOI： 10.6009/jjrt.KJ00001357584

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記述言語：日本語   出版者・発行元：システム制御情報学会  

In previous studies of human information processing, the visual separate system and the auditory separate system have been frequently studied. However, human related characteristic between visual and auditory systems has not been investigated substantially. If the mechanisms of human visual and auditory parallel information processing are elucidated, the finding will contribute to improving technical systems. In our previous studies, human related characteristic between visual search and speech perception is studied. The results showed the mutual effect between visual information processing and auditory information processing in the visual and the auditory parallel information processing. However, to clarify the cause of many car accidents lies in the use of car-phone on driving, it is necessary to use the same kind of visual and auditory stimuli in psychological experiments. In this paper, characteristic of reaction time in parallel information processing of human visual and auditory system is measured by using the same kind of stimuli. The experimental results show the factors that influence the visual and the auditory reaction time are the difficulty of the visual and the auditory stimuli and the timing of the visual and the auditory inputs. The experimental results also suggest that one of the causes of car accidents (to use car-phone while driving) is that the human visual information processing is affected by the auditory information.

DOI： 10.5687/iscie.14.18

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

In our previous study, a virtual catch-ball system was designed. The virtual catch ball system consists of pitch ball, catch ball and Head Mounted Display (HMD) subsystems. For the catch ball subsystem, the force display of simple structure, large movable area, high safety and low cost is required. Some kinds of force display systems were already proposed by other researches so far. However, the motion range of those force displays is considerably small, or the large mechanical parts are necessary to attain enough motion space. In this study, the authors proposed a following-type force display for the virtual catch-ball system. The force display consists of a force unit, a rotary motion unit and a vertical motion unit. The proposed force display can generate the force in the different directions of the vertical and the horizontal plane, and the merits of this system are large motion range, high safety and low cost. The performance of the proposed force display is demonstrated by several basic experiments. © 2000, The Japan Society of Mechanical Engineers. All rights reserved.

DOI： 10.1299/kikaic.66.2756

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

Virtual reality technology has been widely applied in telerobotics, sports training and so on. In the present paper, we consider a virtual catch-ball as an application of virtual reality. The virtual catch-ball system has three subsystems
they are a pitch-ball subsystem, a catch-ball subsystem and HMD (Head Mounted Display) system with 3D images. We develop a force display of which structure was very simple. In the force display, the force is realized by a spring. Using the developed force display the human force perceptive characteristic on hand is measured. The experimental results suggested that human perceptive sensitilvity of force is depended on the hand position and the presented force volume. From the results of experiment, some important points are suggested to realize a force display with high performance. © 2000, The Japan Society of Mechanical Engineers. All rights reserved.

DOI： 10.1299/kikaic.66.208

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

The distance information is very important to operate a teleoperation robot in the teleoperation system. Unfortunately, it is very difficult to realize a distance man-machine interface, in order to present the distance information. Because the human perceptive distance is different from the actual distance, and also the spatial scale of the real world is different from the virtual world. Therefore, it is very important to measure and analyze human characteristic of distance perception for the man-machine interface of teleoperation systems. In this study, the characteristics of human distance perception are measured, and a mathematical model of human distance perception is proposed. The results suggested that the human perceptive distances are larger (smaller) than the actual distances, if with using (not using) tactile information. The experimental results provide useful basic data to design the distance interface of teleoperation systems, and to investigate the human mechanism of distance perception.

DOI： 10.1109/IROS.2000.894687

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記述言語：日本語   出版者・発行元：一般社団法人 システム制御情報学会  

Recently, the cause of many car accidents is to use car-phone while driving. We hypothesize that one of the causes of such traffic accidents is that the human visual information processing is affected by the auditory information. In order to evidence the hypothesis, human characteristics between visual search and speech perception have been measured by psychological experiments. On the measurement results, in the case of the auditory information is presented concurrently, the visual reaction time is longer than that in the case of the visual information is presented only. The results of fundamental experiments with human visual and auditory characteristic suggest one of the cause of traffic accidents in using car-phone is that the human visual information processing is affected by the auditory information.

DOI： 10.5687/iscie.12.98

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その他リンク： https://jlc.jst.go.jp/DN/JALC/00384758672?from=CiNii

記述言語：英語   掲載種別：研究論文（学術雑誌）  

In the present paper, a spatial position sensor of new type for virtual catch ball system is proposed. In the virtual catch-ball system, it is necessary to obtain spatial positions of the ball and the glove. For such a spatial position sensor, requirements are not only low cost but also wide measurable area and low noise. Several spatial position sensors which have already been developed do not satisfy those requirements. The authors' newly designed spatial position sensor is of simple structure and attains the above goal. The static and the dynamic examinations were made on the characteristics of that sensor, and it was found that the sensor has desirable characteristics. The performance of the sensor is also discussed through the experimental results. © 1999, The Japan Society of Mechanical Engineers. All rights reserved.

DOI： 10.1299/kikaic.65.2742

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記述言語：英語   出版者・発行元：一般社団法人 システム制御情報学会  

In the previous studies, the luminous-efficiency function for the mesopic vision is proposed by several empirical formulas, and some discrepancies between the experimental data and the formulated results existed. In the present paper, we propose a model of the equivalent luminous-efficiency function based on the brightness perception which covers the scotopic, the mesopic and the photopic conditions. In order to realize the equivalent luminous-efficiency function, we construct a four layer neural network model. The neural network is composed of three parts : an input layer, two hidden layers and an output layer. This neural network model is trained by the back-propagation learning algorithm with use of training data obtained by psychological experiments. After completion of learning, the response functions of the two hidden units express the scotopic and the photopic coefficients functions which depend on the input light-intensity level. The analysis of the model output indicates that our neural network has acquired an excellent generalization capability. That is, the model of the equivalent luminous-efficiency function has a nice generalization capability in the scotopic, the mesopic and the photopic conditions. The analysis results of internal representation in the neural network model suggested that the scotopic coefficient function contribute to brightness at a larger range.

DOI： 10.5687/iscie.11.384

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その他リンク： https://jlc.jst.go.jp/DN/JALC/00384758078?from=CiNii

記述言語：英語   出版者・発行元：システム制御情報学会  

The human visual system is a sensory organ having a very high performance. It analyzes various visual information at a very high speed. The key of such performance will be the parallel structure of the visual system. As the fundamental process of the human visual system, the authors pay attention to the achromatic information processing system. In order to elucidate mechanism of the achromatic channel, in the present paper, the achromatic perception has been measured by three psychological experiments. In the first experiment, the spatial characteristic of the achromatic perception has been measured for six wavelengths of monochromatic light. In the second experiment, the relative spectral sensitivity of the achromatic perception has been measured for two test sizes. In the third experiment, the relative spectral sensitivity of the achromatic perception has been measured for two background levels, i.e., at 55 and 798 Td. It is difficult to explain the experimental results by the conventional achromatic channel model, and the experimental results suggest that the achromatic information is processed by several subsystems in parallel. In order to explain the experimental results, we propose a model of achromatic information processing composed of five stages and three subsystems.

DOI： 10.5687/iscie.8.364

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出版者・発行元：The Society of Instrument and Control Engineers  

Regarding the color vision of human being, the zone theory which combines the three-component and the opponent-color theories of color vision has become widely accepted.<br>As physiological fact, there exist several types of ganglion cells in the retina which have different sizes in the center-surround structure. Hence it is important to investigate the spatial characteristics of the color processing system.<br>In the present paper, the authors measure the spatial characteristics of the incremental threshold by using the two-color threshold method. The experimental results show that in the short- and long-wavelength ranges of the test stimulus, the color adaptation has dependency on the wavelength of the adaptive light, while, for the middle-wavelength stimulus, the it does not depend on the adaptation wavelength. It is not explained by the Stiles's π mechanism or a simple mutual interaction of the chromatic channel and the achromatic channels. Hence, the authors propose a five-stage model of the color adaptation which can explain the experimental results in a satisfactory manner.

DOI： 10.9746/sicetr1965.30.375

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記述言語：英語

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総ページ数：xxxvii, 442 p.   記述言語：英語

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記述言語：日本語

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総ページ数：xii, 295p   記述言語：日本語

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担当ページ：PP.1-31  

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担当ページ：PP.178?180  

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担当ページ：205?213/459?468  

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総ページ数：ix, 203p   記述言語：日本語

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

Working memory has important role in daily life and a lot of research was done in visual or auditory information. However, tactile working memory was unclear indeed. So we did research for tactile working memory capacity using n-back task for young and elder subjects. The experimental stimulus was raised shape of four directions 'V'. The subjects recognized these shapes by index finger. Next, subjects compared the current stimuli with the n times back stimuli. Subjects then responded whether the direction of a stimulus is the same or different. As a result, there was a significant difference between young and elder subjects in accuracy. We presume that these results depend on aging effect of a working memory capacity and decline of the recognition capability. The next step to find property is measurement of brain activity for tactile n-back task.

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

Since Alzheimer's disease (AD) is a progressive neurodegenerative brain disease, the altered cognitive symptoms in the very early stage of AD involve mild learning, memory or planning problems. Eventually, AD patients will lose their ability to carry out the simplest tasks of daily living when in the later severe stage. Currently, no medical tests are available to diagnose AD conclusively pre-mortem. The goal of our research is to confirm the preclinical cognitive markers of AD with neuropsychological approach used for AD early detection.

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

Interaction occurs in brain when human gets stimuli from different sensory organs such as visual and auditory. Previous behavioral studies have shown that bimodal audiovisual stimuli simultaneously can be discriminated or detected more rapidly and accurately than unimodal visual or auditory stimuli presented alone. Many studies have shown that temporal asynchrony of audio-visual stimuli can influence the integration between visual and auditory stimulus, however, the multisensory mechanisms of asynchrony inputs were not well understood. In this study, we measured the behavioral and EEG data when the visual and auditory stimuli onset asynchrony were presented in the screen. This was done for each of the five different 50-ms subranges of stimulus onset asynchrony. Behavioral results showed that reaction times to the asynchrony audiovisual stimuli were faster that the unimodal stimulus. Moreover, the interaction of the asynchrony input was verified from event related potentials (ERPs). Especially, the results showed that the effect on EEG component around 200ms was largest when visual was presented after the auditory stimuli. This result suggested that might reflect the processing or adjusting for the temporal alignment of audiovisual stimuli.

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

Reading in a second language (L2) is a complex task that involves an interaction between L2 and the native language (LI). To investigate the fundamental mechanisms, this study used functional magnetic resonance imaging (fMRI) to visualize Japanese-Chinese bilinguals' brain activity in semantic processing of Chinese and Japanese characters, whose form are similar. We asked 13 Japanese-Chinese bilinguals to judge whether or not a presented pair of Chinese or Japanese characters had same semantics or font size. Semantic and orthographic association judgments were made to a pair of two-character words that were presented sequentially in the visual modality. In an fMRI experiment, we found Japanese-Chinese bilinguals showed activation in middle occipital gyrus in Japanese. And we also found they showed activation in left middle/inferior frontal gyrus which were known to be associated with semantic processing, left supplementary motor area which was known to solve language conflict on semantic tasks in Chinese. These findings were not consistent with previous studies that language experience tuned the cortex. But we found language conflict happened in Chinese task. This finding suggests language conflict affected Chinese task, and we think our fMRI experiment results changed from original results because of language conflict. So we think we need to remove language conflict when we conduct an fMRI experiment for bilinguals.

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

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記述言語：日本語   出版者・発行元：(一社)日本認知症学会  

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記述言語：日本語   出版者・発行元：(一社)日本認知症学会  

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

In present study, we developed a tactile speed patterns presentation device that is capable of perform the tactile speed perception and discrimination experiments. It can serve to determining the underlying central neural mechanisms that contribute to tactile speed perception and discrimination. The device consists of two dots stimulus discs, one stepping motor, one motor controller and one computer. We used energy from the stepping motor to rotate the dots stimulus discs to present the different tactile speeds. The information related to rotating speed and time will be recorded with the computer. Then, five healthy subjects were asked to conduct a tactile speed estimation experiment using present device. The results indicated that the subjects underestimate the perceived tactile speed compare to the standard speed.

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

In present study, we developed a pointing movement experimental device with visual feedback control function that is capable of perform the cognitive psychological procedure relate to own hand movements. It can serve to determining the human characteristics of pointing movement with or without visual feedback restriction. The main part of present device consists of a touch monitor, one set of light control glass, a relay switch electric circuit and computer. The subjects can do the pointing movement on the touch monitor and the visual feedback restriction will carry out with a combination of light control glass and relay switch. Finally, we performed a vision restricted pointing movement task with lateral ocular. The results suggest that although the visual feedback was restricted, the pointing movement depend on the index difficulty of targets.

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

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担当区分：筆頭著者   記述言語：英語  

DOI： 10.1097/WNP.0b013e3181c298b1

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記述言語：日本語  

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記述言語：日本語   出版者・発行元：一般社団法人電子情報通信学会  

広視野の運動視覚刺激は,ある条件下で人間に自己運動感覚を引き起こす.視覚自己運動感覚は,視覚と前庭感覚の相互作用によって生じるものであり,視環境内での身体の平衡制御や等速運動時に,人間が感じる運動感覚の生成に重要な役割を果たす.視覚自己運動感覚は,視覚刺激パラメータ(回転速度,時間周波数,空間周波数)に依存することがいくつかの先行研究によって言及されているものの,まだ統一した見解に至っていない.本研究では,回転する視覚刺激により生じる自己回転運動感覚(CV : Circular Vection)の視覚刺激パラメータ依存性(時空間特性)に対して検討を行った.その結果,CVが視覚刺激パラメータの運動速度特性や空間周波数特性に比較して,時間周波数特性により良く依存することが分かった.

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記述言語：英語  

DOI： 10.1097/WNR.0b013e328010a07e

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記述言語：英語   出版者・発行元：LIPPINCOTT WILLIAMS & WILKINS  

Function segregation in the left inferior frontal gyrus was investigated in a functional magnetic resonance imaging experiment using a passive listening task, in which Japanese volunteers were required to passively listen to words and nonsense words in Japanese and English. The statistical analysis results showed that the dorsal part of the left inferior frontal gyrus was more extensively activated by listening to English words and nonsense words than to those of Japanese, respectively, which suggests automatic articulatory representation access for non-native stimuli perception, and that the ventral part was more extensively activated by listening to English and Japanese words than to nonsense words in either language, which suggests a lexical or semantic processing function.

DOI： 10.1097/WNR.0b013e328010a07e

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記述言語：英語  

DOI： 10.1109/ICCME.2007.4382083

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記述言語：英語  

DOI： 10.1109/ICCME.2007.4381995

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記述言語：英語  

Visual orienting attention has been researched thoroughly using visual cues, and spatial attention and temporal attention have been compared using brain-imaging data [1]. However, while several studies have reported on auditory attention, the attention was not oriented using a cue. In addition, fewer studies have compared spatial and temporal attention using auditory stimuli. We compared visual and auditory orienting attention using a visual cue. We asked whether a general system exists for auditory spatial and temporal attention that conforms to that of visual spatial and temporal attention. We measured brain activity in 16 healthy volunteers using functional magnetic resonance imaging (fMRI). The attention was manipulated spatially and temporally using a visual cue for both visual and auditory tasks in a factorial design. Symbolic central cues oriented the subjects toward spatial location only (left or right), toward the temporal interval only (300 or 1800 ms), or gave no information about the spatial location or temporal interval. The subjects were also scanned under a resting basetine condition during which they clicked the reaction key ten times. Behavioral data showed the same tendency in visual and auditory tasks. The reaction time for spatial location attention was faster than that for temporal interval attention. The brain-imaging data showed a partial overlap between visual spatial attention and auditory spatial attention. In addition, it revealed a partial overlap between the neural systems involved in the performance of visual spatial attention versus visual temporal attention. The parietal and frontal cortices were activated in both the visual and auditory spatial attention tasks. The parietal cortex was activated in the visual temporal attention task only and not in the auditory temporal task. ©2007 IEEE.

DOI： 10.1109/ICCME.2007.4381995

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記述言語：英語   出版者・発行元：SPRINGER  

Japanese differs from English because it uses KANAs as basic pronunciation units, which also can be used to build words directly via certain combinations. Therefore, Japanese better facilitates the separation of underlying cognitive components in spoken language processing, e.g., phonemes, combinations of phonemes, and words with meanings. In this study, we measured the brain activities of subjects by using functional magnetic resonance imaging (fMRI) as they were passively listening to a series of words (word condition), combinations of phonemes without meanings (nonsense word condition), and temporally separated KANAs (separated KANA condition). The three conditions all activated the bilateral superior temporal gyrus, while the detailed location and volume of activated areas varied across the three kinds of stimuli. Listening to the words and separated KANAs activated more areas than did listening to the nonsense words, perhaps owing to different familiarity levels; areas activated in the separated KANA condition were slightly posterior to those activated in the word and nonsense word conditions. Compared with the nonsense word and separated KANA conditions, the word condition also activated part of the right primary motor cortex and part of the left premotor cortex, which may be related to articulatory-gestural representations of word access. There were no obvious areas activated in the anterior STG and STS, which have been related to semantic representations of words.

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記述言語：英語   出版者・発行元：SPRINGER  

Japanese differs from English because it uses KANAs as basic pronunciation units, which also can be used to build words directly via certain combinations. Therefore, Japanese better facilitates the separation of underlying cognitive components in spoken language processing, e.g., phonemes, combinations of phonemes, and words with meanings. In this study, we measured the brain activities of subjects by using functional magnetic resonance imaging (fMRI) as they were passively listening to a series of words (word condition), combinations of phonemes without meanings (nonsense word condition), and temporally separated KANAs (separated KANA condition). The three conditions all activated the bilateral superior temporal gyrus, while the detailed location and volume of activated areas varied across the three kinds of stimuli. Listening to the words and separated KANAs activated more areas than did listening to the nonsense words, perhaps owing to different familiarity levels; areas activated in the separated KANA condition were slightly posterior to those activated in the word and nonsense word conditions. Compared with the nonsense word and separated KANA conditions, the word condition also activated part of the right primary motor cortex and part of the left premotor cortex, which may be related to articulatory-gestural representations of word access. There were no obvious areas activated in the anterior STG and STS, which have been related to semantic representations of words.

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記述言語：英語  

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記述言語：英語  

DOI： 10.1109/ICCME.2007.4381985

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記述言語：英語  

Retinotopic mapping is one of the most important experimental procedures in brain mapping the human visual system. Due to technical problems in previous studies applying fMRI retinotopy on human subjects, which typically used a central and/or pericentral visual field stimulus (8-30 deg of eccentricity from the fixation point), retinotopic characteristics of peripheral vision in humans are still unclear. To overcome this obstacle, we developed the wide-view visual presentation system with a horizontal visual angle of 120 deg and a vertical angle of 120 deg using nonmagnetic optical fibers and contact lens for fMRI. In this paper, we introduce the functions and performance of this system and report the results of our evaluative experiment. © 2007 IEEE.

DOI： 10.1109/ICCME.2007.4381985

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記述言語：英語  

DOI： 10.1109/ICCME.2007.4381988

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記述言語：英語  

We are especially interested in the human ability to recognize shape using the delayed matching paradigm in active and passive touch studies. To investigate the characteristics of shape recognition, stimulus presentation control is very important because a subtle difference in the stimulus presentation will influence the results. In this study, we propose a new device that precisely controls the stimulus presentation and performs psychobehavioral measurements in haptics studies. And we also conducted an active/passive shape discrimination experiment to evaluate the performance of the device. Twenty right-handed students consented to participate in the experiment. The results suggest that the device might serve as a comprehensive haptic device that allows different types of haptic stimuli to be presented precisely to subjects to measure various psychobehavioral parameters. © 2007 IEEE.

DOI： 10.1109/ICCME.2007.4381988

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記述言語：英語   出版者・発行元：SPRINGER  

Japanese differs from English because it uses KANAs as basic pronunciation units, which also can be used to build words directly via certain combinations. Therefore, Japanese better facilitates the separation of underlying cognitive components in spoken language processing, e.g., phonemes, combinations of phonemes, and words with meanings. In this study, we measured the brain activities of subjects by using functional magnetic resonance imaging (fMRI) as they were passively listening to a series of words (word condition), combinations of phonemes without meanings (nonsense word condition), and temporally separated KANAs (separated KANA condition). The three conditions all activated the bilateral superior temporal gyrus, while the detailed location and volume of activated areas varied across the three kinds of stimuli. Listening to the words and separated KANAs activated more areas than did listening to the nonsense words, perhaps owing to different familiarity levels; areas activated in the separated KANA condition were slightly posterior to those activated in the word and nonsense word conditions. Compared with the nonsense word and separated KANA conditions, the word condition also activated part of the right primary motor cortex and part of the left premotor cortex, which may be related to articulatory-gestural representations of word access. There were no obvious areas activated in the anterior STG and STS, which have been related to semantic representations of words.

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記述言語：英語   出版者・発行元：SPRINGER  

In this article, we will discuss how the Wisdom Web (WW) from the next-generation Web Intelligence (WI) development contributes to the research Studies in immunology, i.e., the scientific discovery of HIV-immune interaction dynamics. In particular, we will show that a new computing paradigm, called Autonomy Oriented Computing (AOC), will be necessary to support the Wisdom Web to meet this challenge. Throughout our discussion, we will pose several Research Questions, through which the authors intend to highlight the technical issues involved and to stimulate thinking and innovations from the community of researchers pursuing this exciting, interdisciplinary endeavor.

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記述言語：英語  

In the paper, we propose a multi-aspect data mining process for investigating a more whole human information process mechanism systematically. As an example to demonstrate the proposed mining process, we explain how to design the experiments of an ERP mental arithmetic task with visual stimuli for investigating human computation centric information processing mechanism, and describe how to do multi-aspect analysis in the obtained ERP data, respectively. Furthermore, we give some preliminary results to show the usefulness of our methodology and to discuss the future research directions. © 2007 IEEE.

DOI： 10.1109/ICCME.2007.4382083

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記述言語：英語   出版者・発行元：IEEE  

Audiovisual early integration was investigated in humans using behavioral and electrophysiological measures in the attending one-modality (visual/auditory) condition to determine whether audiovisual early integration occurs when one modality is attended. Visual, auditory, and audiovisual stimuli were presented randomly with equal probability. The subjects were instructed to press a button in response to an infrequent target stimulus (20%) in the attend-designated modality. Reaction times (RTs) and accuracy were recorded and were compared using paired t-tests. The event-related potentials (ERPs) to bimodal stimuli (AV) were compared with the sum of the ERPs to unimodal auditory (A) and visual (V) stimuli. The early integration process was expressed as the difference waveform. between AV and (A+V). Audiovisual early integration (P100) of the bimodal audiovisual stimuli was found in the scalp topographies in the attending auditory condition; moreover, the RTs to the bimodal audiovisual target stimuli were faster than the RTs to the unimodal auditory target stimuli. By contrast, in the attending visual condition, audiovisual early integration (P100) of the bimodal audiovisual stimuli was not found in the scalp topographies, and no significant RT difference was observed between the unimodal visual and bimodal audiovisual target stimuli.

DOI： 10.1109/ICCME.2007.4381989

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記述言語：英語  

DOI： 10.1109/ICCME.2007.4381989

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記述言語：英語   出版者・発行元：IEEE  

We tested the ability of human listeners to discriminate white noise bursts in the absence of binaural discrimination cues and changed the shape of spectral cues. Minimum audible angle (MAA) thresholds were determined for five subjects in a two-alternative, forced-choice, adaptive paradigm as a function of the orientation of the array of sound sources in the vertical plane (elevation). The subjects were students with normal hearing who wore a monaural earplug to reduce sound level and timing cues and were then fitted with a pinna mold to change the shape of spectral cues. Tests measured discrimination of the vertical angle in eight planes parallel to the median plane (00 position). The results showed that the sound source position could be discriminated in the vertical plane when a subject with normal monaural hearing wore the external ear model. However, the discrimination ability worsened remarkably. The ability to discriminate the orientation of sound sources in the lower hemi-field was greater than in the upper hemi-field at the 00 to 1800 reference positions, while the reverse was true for the 2250 to 3150 reference positions. In addition, the pinna cavities of both the near and far ears play a role in determining the perceived vertical angle of a sound source in any horizontal position, including the median plane. As a sound source shifts laterally away from the median plane, the contribution of the near ear increases, while that of the far ear decreases. For horizontal positions at azimuths greater than 180 degrees from the midline, the far ear mold no longer changes the shape of spectral cues for discriminating the vertical angle.

DOI： 10.1109/ICCME.2007.4381986

Web of Science

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記述言語：英語  

DOI： 10.1109/ICCME.2007.4381986

Web of Science

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

Considering the emergency of pursuing the front car when a traffic signal is changing. The operation and behavior characteristics, such as response time, break pressure and stopping distance were quantificationally measured and analyzed between the passive driving of a car equipped with ACC (Adaptive Cruise Control) and the active driving of a car without ACC. Acording to the results, while there was a dependence between the speed and the headway distance in the active driving, it was not found in the passive driving, with respect to the response time. In the case of the time of break pressing, the results were reversed with respect to the response time. Furthermore, during passive driving, even at the emergent conditions, such as fast speed and short headway distance, the breaking pressure can achieve greater value in a shorter time.

DOI： 10.1299/kikaic.72.2200

CiNii Article

CiNii Books

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

Considering the emergency of pursuing the front car when a traffic signal is changing. The operation and behavior characteristics, such as response time, break pressure and stopping distance were quantificationally measured and analyzed between the passive driving of a car equipped with ACC (Adaptive Cruise Control) and the active driving of a car without ACC. Acording to the results, while there was a dependence between the speed and the headway distance in the active driving, it was not found in the passive driving, with respect to the response time. In the case of the time of break pressing, the results were reversed with respect to the response time. Furthermore, during passive driving, even at the emergent conditions, such as fast speed and short headway distance, the breaking pressure can achieve greater value in a shorter time.

DOI： 10.1299/kikaic.72.2200

CiNii Article

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DOI： 10.11499/sicejl1962.45.713

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記述言語：日本語   出版者・発行元：The Society of Instrument and Control Engineers  

DOI： 10.11499/sicejl1962.45.713

CiNii Article

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その他リンク： https://jlc.jst.go.jp/DN/JALC/00283644892?from=CiNii

記述言語：日本語   出版者・発行元：一般社団法人 システム制御情報学会  

The use of Virtual Reality (VR) is essential to entertainment, architecture, and other industry as well as science. So, it is important to develop the cost-effective VR with the superior feeling of "Reality". To accomplish the requirement, we have to provide human appropriate sensory stimuli to enhance the sense of reality and immersion. In human, the most part of sensory information are owing to vision, and it is sure to play an important role in VR environment. One of the important psycho-physiological effects in VR is visually induced perception of self-motion, called vection. In this study, we investigated circular vection to specify the optimal parameter for the visual stimulus, such as spatial frequency, temporal frequency, and stimulus speed. And we revealed that the induction of circular vection depended on the multiple parameter of visual stimulus. Our results are suggested that selecting fundamental parameter of visual stimuli is important to improve the human experience of reality and reduce the side effects, such as motion sickness.

DOI： 10.5687/iscie.19.418

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その他リンク： https://jlc.jst.go.jp/DN/JALC/00287396674?from=CiNii

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記述言語：日本語   出版者・発行元：一般社団法人 システム制御情報学会  

The use of Virtual Reality (VR) is essential to entertainment, architecture, and other industry as well as science. So, it is important to develop the cost-effective VR with the superior feeling of "Reality". To accomplish the requirement, we have to provide human appropriate sensory stimuli to enhance the sense of reality and immersion. In human, the most part of sensory information are owing to vision, and it is sure to play an important role in VR environment. One of the important psycho-physiological effects in VR is visually induced perception of self-motion, called vection. In this study, we investigated circular vection to specify the optimal parameter for the visual stimulus, such as spatial frequency, temporal frequency, and stimulus speed. And we revealed that the induction of circular vection depended on the multiple parameter of visual stimulus. Our results are suggested that selecting fundamental parameter of visual stimuli is important to improve the human experience of reality and reduce the side effects, such as motion sickness.

DOI： 10.5687/iscie.19.418

CiNii Article

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その他リンク： https://jlc.jst.go.jp/DN/JALC/00287396674?from=CiNii

記述言語：英語  

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記述言語：日本語   出版者・発行元：システム制御情報学会  

CiNii Article

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DOI： 10.5687/iscie.18.136

CiNii Article

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DOI： 10.5687/iscie.18.136

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記述言語：英語  

Although many cognitive and brain scientists have already studied human information processing mechanism of auditory and visual, separately, the relevance between auditory and visual information processing needs to be investigated in depth. We investigate human multi-perception mechanism by combining various psychological experiments, physiological measurements, data cleaning, modeling, transformation and mining techniques for developing artificial systems which match human ability in specific aspects. In particular, we observe fMRI (functional magnetic resonance imaging) brain activations from the view point of peculiarity oriented mining and propose a way of peculiarity oriented mining for knowledge discovery in multiple human brain data. We present an interesting result on modeling, transforming, and mining multiple human brain data obtained from visual and auditory psychological experiments by using the fMRI. The proposed methodology attempts to change the perspective of cognitive scientists from a single type of experimental data analysis towards a holistic view. © 2004 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.cogsys.2004.03.005

Scopus

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記述言語：英語  

Although many cognitive and brain scientists have already studied human information processing mechanism of auditory and visual, separately, the relevance between auditory and visual information processing needs to be investigated in depth. We investigate human multi-perception mechanism by combining various psychological experiments, physiological measurements, data cleaning, modeling, transformation and mining techniques for developing artificial systems which match human ability in specific aspects. In particular, we observe fMRI (functional magnetic resonance imaging) brain activations from the view point of peculiarity oriented mining and propose a way of peculiarity oriented mining for knowledge discovery in multiple human brain data. We present an interesting result on modeling, transforming, and mining multiple human brain data obtained from visual and auditory psychological experiments by using the fMRI. The proposed methodology attempts to change the perspective of cognitive scientists from a single type of experimental data analysis towards a holistic view. © 2004 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.cogsys.2004.03.005

Scopus

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

Up to now, there is no good hardware of three-dimension (3D) tactile shape display for virtual reality, because a different object has various shape, therefore, to present the all different 3D object shape with continuous values is difficult to operator. In the psychophysical studies, human visual and tactile sensations have illusory fusion caracteristics. That is to say, we can recognize an object shape factually using the vision characteristic even if exact tactile information is not presented. So by utilizing human characteristics of sensory illusory fusion, realization of the tactile shape display can be simplified. Object shape is made from the surface curvature and the distance between any finger touch points. In our previous study, human fusion characteristics of the curvature of the curved surface are measured by psychological experiment. In this study, tactile perceptive characteristics of the distance between the thumb and each fingertip on an object are measured and analyzed. Based on the results, we proposed a three-dimension tactile shape display.

DOI： 10.1299/kikaic.70.2699

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

Up to now, there is no good hardware of three-dimension (3D) tactile shape display for virtual reality, because a different object has various shape, therefore, to present the all different 3D object shape with continuous values is difficult to operator. In the psychophysical studies, human visual and tactile sensations have illusory fusion caracteristics. That is to say, we can recognize an object shape factually using the vision characteristic even if exact tactile information is not presented. So by utilizing human characteristics of sensory illusory fusion, realization of the tactile shape display can be simplified. Object shape is made from the surface curvature and the distance between any finger touch points. In our previous study, human fusion characteristics of the curvature of the curved surface are measured by psychological experiment. In this study, tactile perceptive characteristics of the distance between the thumb and each fingertip on an object are measured and analyzed. Based on the results, we proposed a three-dimension tactile shape display.

DOI： 10.1299/kikaic.70.2699

CiNii Article

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

Magnetic resonance imaging (MRI) is a tomographical scanning system that has a strong magnetic field. In the MRI room, ferric materials and noisy electric circuits cannot be present or function. At an experiment that investigates a human brain function using the fMRI (functional MRI), such as the phase discrimination of temporal frequency between visual and auditory, it is difficult to measure the answering times and its time quantitatively. At this point of view, we have developed a new simple answering device. This device is made of the mouse that is popular at office. For the strong magnetic field, its circuit is removed except the clicking part. As it can be connected to a personal computer, we can measure the answering times and its time during the experiment using the fMRI. To do so, there are some problems to solve, such as the strong magnetic field. In this paper, the performance of the answering device is demonstrated by several basic experiments to solve these problems.

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記述言語：日本語   出版者・発行元：〔精密工学会〕  

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記述言語：日本語   出版者・発行元：〔精密工学会〕  

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記述言語：日本語   出版者・発行元：〔精密工学会〕  

CiNii Article

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