精神状態に関連した情動刺激負荷時の脳波コヒーレンス解析

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: 2012/11/01

タイトル(英語): Coherence Analysis in EEG under the Emotional Stimuli Related to Mental States

著者名: 浅川　徹也（兵庫県立大学　応用情報科学研究科），林　拓世（藍野大学　医療保健学部臨床工学科），水野（松本）　由子（兵庫県立大学　応用情報科学研究科）

著者名(英語): Tetsuya Asakawa (Graduate School of Applied Informatics, University of Hyogo), Takuto Hayashi (Department of Medical Engineering, Faculty of Nursing and Rehabilitation, Aino University), Yuko Mizuno-Matsumoto (Graduate School of Applied Informatics, University of Hyogo)

キーワード: 脳波，情動，コヒーレンス，心身状態　　EEG，emotion，coherence，psychosomatic state

要約(英語): The objective of this research is to abstract the differences of the brain functional reaction in the mental states using coherence analysis in electroencephalography (EEG). Twenty-two healthy subjects were assessed for their psychosomatic states using Cornell Medical Index (CMI) and divided into two groups: normal (I) and pre-neurotic (II-IV) groups. EEG was measured under emotional tasks (relaxed, pleasant, and unpleasant sessions) using audio-visual stimuli and analyzed using coherence analysis. The coherence values of pre-neurotic group in θ band in 120-150 seconds of the pleasant and unpleasant sessions and in β band in the relaxed session were significantly larger than values of normal group. The coherence values of normal and pre-neurotic groups in α2 band in 30-60 seconds and 90-120 seconds in the unpleasant sessions were significantly larger than the values in the relaxed session, respectively. Increase in θ activity means the intuitive and irrational response would appear to the emotional situation, and β activity means the attention would be paid to more the external than internal situations in pre-neurotic group. Alpha activity shows mentally internal response to the unpleasant situation would be prompt in normal group, in contrast to the response would be delayed in pre-neurotic group. These events suggest that the information processes concerning about the emotional stimuli in the brain would be different based on the mental state.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.132 No.11 （2012） 特集：電気関係学会関西連合大会

本誌掲載ページ: 1741-1748 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/132/11/132_1741/_article/-char/ja/