視覚刺激による快-不快情動が体性感覚野に及ぼす影響の検討

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: 2016/09/01

タイトル(英語): The Influence of Visual Induction of Positive-negative Emotions on the Somatosensory Cortex

著者名: 田中　慶太（東京電機大学理工学部電子・機械工学系），安田　誠次郎（東京電機大学理工学部電子・機械工学系），栗城　眞也（東京電機大学総合研究所），内川　義則（東京電機大学理工学部電子・機械工学系）

著者名(英語): Keita Tanaka (School of Science and Engineering, Tokyo Denki University), Seijiro Yasuda (School of Science and Engineering, Tokyo Denki University), Shinya Kuriki (Research Institute for Science and Technology, Tokyo Denki Universiy), Yoshinori Uchikawa (School of Science and Engineering, Tokyo Denki University)

キーワード: 情動，体性感覚定常脳磁界応答，脳磁界，IAPS画像　　Emotion，Steady state somatosensory evoked field (SS-SEF)，Magnetoencephalogram (MEG)，International Affective Picture System (IAPS)

要約(英語): To examine changes in somatosensory cortical activity associated with the processing of emotional images, we measured steady-state somatosensory evoked fields (SS-SEFs) of magnetoencephalograms (MEGs) under tactile stimulation. We used the International Affective Picture System (IAPS) which is increasingly used in brain imaging studies to examine emotional processes. Their images also allow valence to be systematically investigated. Those images, along with synchronous tactile stimuli, were randomly presented for 2.0 s using a video projector and a screen set at 120 cm in front of the subject. The tactile stimuli were applied to the tip of the right index finger. A stimulus epoch consisted of a 2.0 s period of vibration at 10-Hz or 20-Hz and a silent period of 1.0 s. At least 50 epochs were recorded for off-line averaging of the MEG signals for each condition of negative, positive, or neutral images, according to the prior categorization by each subject. The amplitude of the SS-SEF was larger for the negative impression images than for the neutral impression images (p < 0.05), suggesting that the amplitude of the SS-SEF that originated from the somatosensory cortex was modulated by the visual emotional stimuli.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.136 No.9 （2016） 特集：神経工学・サイバネティックス・生体工学

本誌掲載ページ: 1298-1304 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/136/9/136_1298/_article/-char/ja/