てんかん性異常波の持続時間の違いにおけるウェーブレット相互相関解析を用いた脳波の部位間関連性及び情報伝播の可視化

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2018/08/01

タイトル(英語): Visualization of Correlation and Time-lag between the Sites of the Brain for EEG using Wavelet-crosscorrelation Analysis According to Differences in Duration of Epileptiform Discharges

著者名: 山口　梢（兵庫県立大学大学院 応用情報科学研究科），猪口　祐次（兵庫県立大学大学院 応用情報科学研究科），佐久間　俊（兵庫県立大学大学院 応用情報科学研究科），Steven　M. A. Carpels（兵庫県立大学大学院 応用情報科学研究科），水野(松本)　由子（兵庫県立大学大学院 応用情報科学研究科）

著者名(英語): Kozue Yamaguchi (Graduate School of Applied Informatics, University of Hyogo), Yuji Inoguchi (Graduate School of Applied Informatics, University of Hyogo), Shun Sakuma (Graduate School of Applied Informatics, University of Hyogo), Steven M. A. Carpels (Gr

キーワード: 脳波，てんかん性異常波，てんかん，ウェーブレット相互相関解析，関連性_x000D_　　electroencephalography，epileptiform discharges，epilepsy，wavelet-crosscorrelation analysis，correlation

要約(英語): We investigated the correlation and time-lag (LAG) between the sites of the brain for different durations of epileptiform discharges, using wavelet-crosscorrelation (WCC) analysis. Electroencephalography (EEG) was classified into two epochs according to the epileptiform discharge durations, as follows: short run, 2-3 seconds; and long run, 3 seconds or more. Both runs were categorized into before, during, and after the epileptiform discharges. WCC coefficients and LAG in the 6 and 8 Hz bands for each segment were calculated in all the patients. The results of the comparison among all the electrodes in both runs showed that the correlation during the epileptiform discharges was higher than before and after the epileptiform discharges. In the 6 Hz band, in the short run, the results of the comparison among the temporal region electrodes showed that the correlation and LAG between the sites could be stronger in the 2 seconds immediately prior to the beginning of the epileptiform discharges in the EEG. In the long run, the results of the comparison among the temporal region electrodes showed that high correlation and LAG between the sites could be stronger in the 2-4 seconds immediately prior to the beginning of the epileptiform discharges and 2-4 seconds after to the epileptiform discharges in the ipsilateral hemisphere and contralateral hemisphere. It can be suggested that the difference in the duration of the epileptiform discharges may be caused by the balance between the suppressive and excitatory processes in the brain, before and after epileptiform discharges.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.138 No.8 （2018） 特集：人間と情報を繋ぐ情報システム

本誌掲載ページ: 1045-1053 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/138/8/138_1045/_article/-char/ja/