标题：Neural Dynamics of Processing Probability Weight and Monetary Magnitude in the Evaluation of a Risky Reward
作者：Wang, Guangrong; Li, Jianbiao; Wang, Pengcheng; Zhu, Chengkang; Pan, Jingjing; Li, Shuaiqi
作者机构：[Wang, Guangrong] Weifang Univ, Neural Decis Sci Lab, Weifang, Peoples R China.; [Wang, Guangrong; Li, Jianbiao; Wang, Pengcheng; Zhu, Chengkang; Pa 更多
通讯作者：Wang, GR;Wang, GR;Li, JB;Li, JB;Li, JB
通讯作者地址：[Wang, GR]Weifang Univ, Neural Decis Sci Lab, Weifang, Peoples R China;[Wang, GR; Li, JB]Nankai Univ, China Acad Corp Governance, Business Sch, Reinha 更多
来源：FRONTIERS IN PSYCHOLOGY
关键词：probability weight; money magnitude; risky choice; neural dynamics; ERP
摘要：Risky decision-making involves risky reward valuation, choice, and feedback processes. However, the temporal dynamics of risky reward processing are not well understood. Using event-related brain potential, we investigated the neural correlates of probability weight and money magnitude in the evaluation of a risky reward. In this study, each risky choice consisted of two risky options, which were presented serially to separate decision-making and option evaluation processes. The early P200 component reflected the process of probability weight, not money magnitude. The medial frontal negativity (MFN) reflected both probability weight and money magnitude processes. The late positive potential (LPP) only reflected the process of probability weight. These results demonstrate distinct temporal dynamics for probability weight and money magnitude processes when evaluating a risky outcome, providing a better understanding of the possible mechanism underlying risky reward processing.