情绪影响风险决策的ERP研究：以愉悦和愤怒为例

he current study aims at exploring how the two typical emotions namely happy mood and angry mood influence risk decision making.We recorded event-related potentials(ERP) to identify the neural correlates of risk decision making :N200,P300,while subjects viewed the gamble after movie clips.The behavioral data showed that equally more risk decisions during happy mood and angry mood induced by funny or angry movie clips respectively，suggesting the two different mood states seemed to have the same effect on decisions. The EEG data showed : the higher amplitude of N200 and P300 occurred in angry rather than happy mood,suggesting that more cognitive control was needed to make decisions in induced angry mood,and that the cognitive processing was involved more feelings because of angry mood and hard to be controlled; no significant difference between the latency of N200 and P300 was found, suggesting that the procedure and speed of human risk decision making in the two different moods appeared to be consistent. Conclusions: risk-taking tendency exists in both happy mood and angry mood,while more unrational risk decisions in angry mood causing more involved feelins when individuals decided whether to accept or reject gambles.