山川健次郎記念レクチャー

第十回山川健次郎記念レクチャー

講演者  

Professor Daeyeol Lee, Dorys McConnell Duberg Professor of Neuroscience and Professor of Psychology and of Psychiatry, Yale University

http://leelab.yale.edu/

 
講演日時 平成29年7月19日(水)17:00~19:00
 
講演場所

東京大学法学政治学系総合教育棟404教室

http://www.u-tokyo.ac.jp/campusmap/cam01_01_06_j.html

 
タイトル Reward and Uncertainty in the Prefrontal Cortex”
 
講演概要 Uncertainty in the environment affects many aspects of decision making and hence its underlying neural mechanisms. For example, reward from recent actions has a greater effect on subsequent behaviors when the environment is uncertain. Similarly, in social settings, uncertainty in the behaviors of other agents often requires the use of complementary learning algorithms. In our experiments, we found that uncertainty strengthens neural signals related to reward history in the prefrontal cortex during a probabilistic reversal learning task. The results from the same experiment also suggest that the lateral prefrontal cortex might contribute to resolving the curse of dimensionality during reinforcement learning. We also found novel switching signals in the dorsomedial prefrontal cortex related to the deviation from simple reinforcement learning algorithm during competitive interactions with a computer opponent. These results suggest the prefrontal cortex implements diverse computational algorithms for adaptive decision making.
 
共催

法学政治学研究科先端融合分野研究支援センター

東大こころの多様性と適応の統合的研究機構

 
協賛

東大友の会(FUTI)

言語

 英語