Roles of perception and reward in decision-making : an integrative study using fMRI, single unit recording, and computational models
| Project/Area Number |
19330161
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Experimental psychology
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| Research Institution | Kyoto Sangyo University (2008-2009)
Tamagawa University (2007) |
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Principal Investigator |
OKUDA Jiro Kyoto Sangyo University, コンピュータ理工学部, 准教授 (80384725)
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| Co-Investigator(Kenkyū-buntansha) |
SAKAGAMI Masamichi 玉川大学, 脳科学研究所, 教授 (10225782)
SAMEJIMA Kazuyuki 玉川大学, 脳科学研究所, 准教授 (30395131)
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2009: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2008: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2007: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
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| Keywords | 意思決定 / 報酬予測 / 知覚的曖昧性 / ドーパミンニューロン / 黒質-線条体 / 内側前頭葉 / 強化学習モデル / 機能的MRI |
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| Research Abstract |
We investigated roles of stimulus processing and reward information processing in decision-making by using human fMRI experiments, monkey electrophysiology, and computational models. Using random-dot motion stimuli and gabor patch stimuli as reward-predictive stimuli, we found that the basal ganglia predicted rewards based on sensory input information of perceptually salient stimuli and that the medial prefrontal cortex predicted rewards based on discrimination output of ambiguous stimuli, thereby suggesting multiple reward circuits according to multiple stimulus processes in the brain.
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Report
(4 results)
Research Products
(100 results)
