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: 2017/05/01タイトル(英語): Brain Activity During Turn-Taking Using Virtual Characters: An fMRI Study on Humans Interacting with Virtual Characters著者名: 湯浅 将英（湘南工科大学 工学部 コンピュータ応用学科），渡辺 奈津美（東京電機大学 情報環境学部），豊村 暁（群馬大学大学院 保健学研究科）著者名(英語): Masahie Yuasa (Department of Applied Computer Sciences, Shonan Institute of Technology), Natsumi Watanabe (School of Information Environment, Tokyo Denki University), Akira Toyomura (Graduate School of Health Sciences, Gunma University)キーワード: fMRI，仮想キャラクタ，発話交替，ヒューマン・エージェント・インタラクション，非言語情報 fMRI，virtual character，turn-taking，human-agent interaction，nonverbal information要約(英語): In this study, we examined turn-taking behavior by measuring brain activity using functional magnetic resonance imaging (fMRI). We developed virtual characters that exhibited turn-taking behavior. These characters displayed facial expressions that indicated a willingness to continue talking, and regulated its timing in conversational turn-taking. We then confirmed the validity of these behaviors through behavioral experiments that used a pseudo-conversation between these virtual characters and human participants. In addition, we conducted an fMRI experiment where the participants were required to read part of a scenario in a conversation with the character. The results showed that the insular cortex and the right superior temporal gyrus were significantly activated when the character behaved properly in turn-taking. These results suggest that the activation of the right superior temporal gyrus was related to mutual understanding. The insular cortex has been shown to be related to empathy in previous studies. Thus, turn-taking may have a significant role related to mutual understanding and empathy in conversation. Our experimental design and findings may provide an objective framework for virtual character design, and contribute to the study of human conversation.本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.137 No.5 （2017）本誌掲載ページ: 724-734 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/137/5/137_724/_article/-char/ja/
