| Project/Area Number |
16K13505
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Experimental psychology
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| Research Institution | Nagoya University |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | モデルフリー・モデルベース / 意思決定 / 行動選択 |
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| Outline of Final Research Achievements |
Decision-making and reinforcement learning arise from the involvement of two distinct processes that control choice, known as model-based and model-free strategies. Model-based choices are prospective, whereas model-free choices are retrospective. In general, normal performance depends on the flexible integration of model-based and model-free control. In this research, we employed a two-step sequential visual discrimination learning of complex stimuli in touch-screen task to establish a novel behavioral system for investigating a mixture of model-free and model-based reinforcement learning in rodent. Rats chose option on the reward amount- and provability-dependent manner. However, we failed to find best fitting behavioral modeling and parameters. We need to continue our experiments in future studies.
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