2012 Fiscal Year Final Research Report
Long-term reward value coding by midbrain dopamine neurons
| Project/Area Number |
23700503
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Fusional social brain science
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| Research Institution | Tamagawa University |
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Principal Investigator |
ENOMOTO Kazuki 玉川大学, 脳科学研究所, 嘱託研究員 (10585904)
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| Project Period (FY) |
2011 – 2012
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| Keywords | ドーパミン / 霊長類 / 報酬価値 / 予測誤差 / 意思決定 / 強化学習 / 大脳基底核 |
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| Research Abstract |
We showed that midbrain dopamine neurons encode long-term value and its expectation errors of future rewards. By using electrophysiological methods and computational simulations based on reinforcement learning theories, we recorded and analyzed dopamine neuron responses in monkeys performing a behavioral task in which they obtained multiple rewards by multi-step actions. We also confirmed that dopamine neurons evolved these activities by learning the task. These functions play an important role in decision-making and action selection to achieve a distant goal.
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