研究者詳細 - 秋山　倫之

MISC - 秋山　倫之

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Electroencephalographic changes and their regional differences during pediatric cardiovascular surgery with hypothermia

Akiyama T, Kobayashi K, Nakahori T, Yoshinaga H, Ogino T, Ohtsuka Y, Takeuchi M, Morita K, Sano S, Oka E

Brain Dev 23 ( 2 ) 115 - 121 2001年

B-13 複雑部分発作の発作時脳波の有用性と限界

吉永治美, 大守伊織, 浅野孝, 秋山倫之, 岡〓次

日本てんかん学会プログラム・予稿集 ( 34 ) 116 - 116 2000年

体外循環と低体温法を用いた小児開心手術中の脳波変化に関する研究

秋山倫之

岡山醫學會雜誌 111 ( 3 ) 71 - 83 1999年8月

記述言語：日本語出版者・発行元：岡山医学会

An electroencephalographic (EEG) study eith a multi-channel digital record was carried out to investigate EEG changes and their spatial characteristics accompanying hypothermia and cerebral ischemia during open-heart surgery in children. Subjects consisited of 10 children, ranging from 1 year 6 months to 4 years 6 months old, who underwent open-heart surgery with extracorporeal circulation and hypothermia. The EEG changes were evaluated visually and analyzed using a computer. (1) A discontinuous EEG pattern was notted during cooling in addition to commonly observed finding inculuding a decrease in fast waves, slowing and amplitude reduction, and was considered caused by rapid and transient suppression of cerebral function. (2) Power spectral and topographical analyses revealed a prominent decrease in fast waves and a relative increase in slow waves during cooling. Durong cerebral ischemia, in contrast, an actual increase in slow waves and decrease in fast waves were observed. (3) We noted the characteristics of bilateral synchronous rhythmic high-voltage slow waves among various types of transient EEG abnor-malities. (4) EEG changes induced by hypothermia differed by brain region. (5) EEG changes induced by hypothermia were influenced not only by body temperature itself but also by the rate of change in body temperature.

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Isolation of epileptiform discharges from unaveraged EEG by independent component analysis

Kobayashi K, James CJ, Nakahori T, Akiyama T, Gotman J

Clin Neurophysiol 110 1755 - 1763 1999年