| People always make decision in the in the context of social interaction.Although the influence of endogenous emotion on decision-making has been widely studied,the way in which interpersonal emotions affect the process of risk decision-making is less well understood.In addition,decision-making is a dynamic process consisting of multistage.Previous researches mainly addressed the neuro-dynamic when interpersonal emotions presented as feedbacks,and discussed the predictive effect between the feedback and behavior output.At present,there are few studies explore the effect of interpersonal emotions presented as prompts in option assessment stage and leaving the correlation between neural activities and behavioral responses at each stage of decision-making unclear.Therefore,we carried out an experiment in which participants performing interpersonal gambling games while electroencephalogram(EEG)was recorded,with the emotion(happy,angry),choice("on" vs."off")and outcome(win vs.lose)as withinsubject factors.In the task,participants performed the interpersonal gambling game after perceiving cooperator' facial emotions while behavioral responses and electroencephalography were recorded.The results indicated that cooperator's happy expression relative to anger increased the individual's risk-approaching behavior,induced larger N100 and P300,and diminished the difference of feedback-related FRN/RewP associated with the outcome feedback.In addition,single-trial analysis found that the N100,N170 and P300 in option assessment stage and feedback-related P300 in outcome valuation stage could predict participants'subsequent decision-making,and such relationships were modulated by interpersonal emotions and by feedback from the preceding trial.These findings suggest that interpersonal emotions shape individual's risk preference through enhancing selective attention and in-depth valuation in option assessment stage and early motivational salience valuation in outcome valuation. |
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