Research Project
Grant-in-Aid for Young Scientists (B)
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.
All 2013 2012 2011 Other
All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (8 results) Book (2 results) Remarks (4 results)
J Neurophysiol
Volume: 109(4) Issue: 4 Pages: 1140-51
10.1152/jn.00289.2012
Proc Natl Acad Sci USA
Volume: 108(37) Issue: 37 Pages: 15462-15467
10.1073/pnas.1014457108
http://physiology.jp/exec/page/stopics76
http://brainprogram.mext.go.jp/media/press/110905tamagawa_kimura_press2.pdf
http://physiology.jp/exec/page/stopics76/