スピーチイメージに関連した脳波周波数成分とその識別に関する検討

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: 2019/05/01

タイトル(英語): An Examination of EEG Frequency Components Related to Speech Imagery and Its Identification

著者名: 塚原　彰彦（東京電機大学理工学部理工学科電子工学系），山田　雅之（東京電機大学大学院理工学研究科電子・機械工学専攻），田中　慶太（東京電機大学大学院理工学研究科電子・機械工学専攻），内川　義則（東京電機大学大学院理工学研究科電子・機械工学専攻）

著者名(英語): Akihiko Tsukahara (School of Science and Engineering Tokyo Denki University), Masayuki Yamada (Graduate School of Science and Engineering, Tokyo Denki University), Keita Tanaka (Graduate School of Science and Engineering, Tokyo Denki University), Yoshinori Uchikawa (Graduate School of Science and Engineering, Tokyo Denki University)

キーワード: EEG，精神課題，スピーチイメージ　　EEG，mental tasks，speech imagery

要約(英語): This study is to examine EEG frequency components relating the intention (“I want to drink”) to “with/without speech imagery” when drink-images are displayed on the PC screen. An experimental process was set in 8 s as followings; fixation image display (1 s), drink image display (2.5 s), intention check (1.5 s), fixation image display (1 s), and speech imagery period (2 s). It was repeated 100 times. EEG was measured with 10-20 system in a magnetically shielded room with BPF (0.08-100 Hz) and notch filter (50 Hz) for 10 subjects. In the analysis, it was averaged with 35 trials dividing between “with/without speech imagery” in an epoch (fixation image display and speech imagery) of 3 s and time-frequency analysis was done. Event-related synchronization (ERS) and desynchronization (ERD) were examined with t-test. ERS were observed in α-band on the left-hemisphere in case of “with speech imagery” for latency of 500-1500 ms and the significant differences (p<0.05) were shown in the left-hemisphere and occipital-region. It is suggested the useful information of selecting electrode positions to detect EEG frequency components for judgment of “with/without speech imagery” in the intention. In addition, an examination to localize electrode was conducted. As a result, it is suggested that averaged RMS value for each frequency component gives useful information even when localized to 9 electrodes.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.139 No.5 （2019） 特集Ⅰ：電子・情報・システム技術とものづくり　特集Ⅱ：生体を診る・解く・支える技術

本誌掲載ページ: 588-595 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/139/5/139_588/_article/-char/ja/