Integrated understanding of internally and externally guided decision making

2016 Fiscal Year Final Research Report

• Project/Area Number: 25870467
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Experimental psychology; Cognitive science
• Research Institution: Hiroshima University
• Principal Investigator: Nakao Takashi 広島大学, 教育学研究科, 准教授 (40432702)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: 意思決定

Outline of Final Research Achievements

Regarding the relationship between internally guided decision making and intrinsic brain activities, it was revealed that the intrinsic brain activity of the lateral prefrontal cortex modulates the activity of the medial prefrontal cortex during the internally guided decision making. In addition, the extent of the preference for the option, which was chosen in the past, was modulated by depressive symptoms, reward sensitivity, and a degree of power of the post response βγ wave generated from anterior cingulate cortex. Although we showed that reinforcement learning models can be applied to the internally guided decision making as well as externally guided decision making, the simple application of reinforcement learning is insufficient and factors such as self-relatedness of stimulus might mediate the learning process during internally guided decision making.

Free Research Field

認知神経科学