题目：Brain mechanisms engaged in social interactions

主讲人：Jean-Claude Dreher

时间：2026年1月24日上午10:30

地点：心理学院大楼520

Jean-Claude Dreher，现任法国国家科学研究中心（CNRS）“神经经济学、奖赏与决策”团队研究主任，拥有数学（巴黎第六大学硕士）与认知神经科学（巴黎第十一大学博士）交叉学科背景。博士毕业后，于美国国立卫生研究院（NIH）从事博士后研究，2004年成为CNRS终身研究员。研究方向主要为认知决策，神经经济学决策，认知神经计算建模。

The brain computations engaged in social learning have started to be investigated in dyadic interactions and in small groups. Yet, little is known about the mechanisms used by the brain when individuals interact in social networks. First, study will present a taxonomy of different types of computations used by the brain for learning and inferences made during social interactions, and will illustrate how this taxonomy is useful to understand the computations underlying four types of social interactions. In particular, the study will show recent model-based functional MRI results showing how the human brain adapts to fluctuating intentions of others when the nature of the interactions (to cooperate or compete) is not explicitly and truthfully signaled. Second, the study will present recent theoretical and experimental work shedding light on the computations people use to integrate and transmit information in social networks. It will also show how the brain decides whether to share extra information with others, depending upon one’s own confidence about the reliability of information and upon one’s beliefs concerning the preferences of receivers. Together, these results pave the way towards developing a mechanistic understanding of social learning mechanisms used by networked individuals interacting dynamically in real time, that shape collective performance and consensus.