To investigate neural mechanisms of two-in-one system in real-time naturally social interaction

2016 Fiscal Year Final Research Report

• Project/Area Number: 26350987
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Basic / Social brain science
• Research Institution: Nagoya University
• Principal Investigator: Tanabe Hiroki 名古屋大学, 環境学研究科, 教授 (20414021)
• Research Collaborator: YOSHIOKA AYUMI 名古屋大学, 環境学研究科 ; KOIKE TAKAHIKO 生理学研究所, 大脳皮質機能研究系, 特任助教 ; NAKAGAWA ERI 生理学研究所, 大脳皮質機能研究系, 特任助教 ; SUMIYA MOTOFUMI 生理学研究所, 大脳皮質機能研究系, 大学院生 ; OKAZAKI SHUNTARO 生理学研究所, 大脳皮質機能研究系, 研究員
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 社会脳科学 / 機能的MRI / ハイパースキャニング / 社会的相互作用 / コミュニケーション / 脳活動の同期 / 共同注意

Outline of Final Research Achievements

In this research, we tried to find and developed an experimental paradigm which realize nearly natural interaction (i.e. real-time communication) between two people in the MR scanner. In parallel, we also extend narrowly defined joint attention to verbally-cued, object-based one, which investigated what is core neural mechanism of shared attention/intention during real social interaction. To compare the synchronization of the brain activity between real pairs and pseudo-pairs (non-pairs), we analyzed the residual time-courses data (i.e. subtracted task-related brain activity) during the interaction task. The results showed that brain activities in the right tempolo-parietal junction (rTPJ), right superior temporal sulcus (rSTS), and dorso-medial prefrontal cortex (dmPFC), were more synchronized between the real pairs than between the non-pairs. It indicates that these synchronized regions might form a common psychological ground to progress a cooperative interaction task smoothly.

Free Research Field

認知神経科学、社会神経科学、脳機能イメージング