Influence of taking other's perspective on decision-making based on social preferences: fMRI/rTMS verification

2022 Fiscal Year Final Research Report

• Project/Area Number: 19K07807
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 51020:Cognitive and brain science-related
• Research Institution: Juntendo University
• Principal Investigator: Ogawa Akitoshi 順天堂大学, 医学部, 准教授 (30374565)
• Project Period (FY): 2019-04-01 – 2023-03-31
• Keywords: 意思決定 / 機能的磁気共鳴画像法 / 経頭蓋磁気刺激法

Outline of Final Research Achievements

In this study, we aimed to measure and control the activity and functional connectivity of the right temporoparietal junction (RTPJ) involved in the acquisition of others' viewpoints by functional magnetic resonance imaging (fMRI) and repetitive transcranial magnetic stimulation (rTMS) to investigate the cognitive and neural basis of the influence of social preferences in decision making. We conducted an fMRI-rTMS experiment using Ultimatum Game and conducted model-based data analysis. The results showed causally that the RTPJ is involved in the counterfactual evaluation that influences the acceptance or rejection of the distribution in the game. These results were published in Cerebral Cortex.

Free Research Field

認知神経科学

Academic Significance and Societal Importance of the Research Achievements

本研究は、右側頭頭頂接合部が他者の視点を取得することに関わるのみならず、分配内容の反実的評価（可能性はあったが実際には実施されなかった分配の評価）に関わることを機能的磁気共鳴画像法と繰り返し経頭蓋磁気刺激法により明らかにした。このことは、社会的意思決定における右側頭頭頂接合部の役割が、これまでの研究より分かっていた以上に広いことを示している。また、本研究の結果は他者の視点を取得することが広く社会的意思決定に影響することを示唆している。