磁共振成像2018，Vol.9Issue(5)：360-367,8.DOI:10.12015/issn.1674-8034.2018.05.007
社会评价威胁对社会困境中决策行为的影响:基于静息态fMRI的研究
The effect of social evaluation threats on decision-making in social dilemmas: a rs-fMRI study
摘要
Abstract
Objective: To study the neural basis of individual differences in the effect of social evaluation threats on decision-making in social dilemmas, we used a modified prisoner's dilemmas (PD) with resting-state functional magnetic resonance imaging (RS-fMRI) technology. Materials and Methods: Sixty healthy volunteers took part in the study and were randomly divided into a threat group and a non-threat group. Participants were asked to provide their photos, which would be evaluated by strangers. The evaluations received by the threat group were mostly negative while the evaluations received by the non-threat group were mostly positive. The experiment was divided into three blocks. In each block, participants were informed of the feedback of the social evaluations, and then completed the one-shot prisoner's dilemma with different people. They needed to choose whether to cooperate with their partners or not in the prisoner's dilemma, and their remuneration would be determined by the outcomes. Cooperation rates in the prisoner's dilemma were used to explore the effect of social evaluation threats on decision-making in social dilemma. A toolbox for data processing & analysis for brain imaging (DPABI) was used to process the RS-fMRI data. This research performed correlation analysis between cooperation rates and regional homogeneity (ReHo) as well as that between cooperation rates and amplitude of low frequency fluctuation (ALFF). Results: The total cooperation rates and the third block's cooperation rates of the threat group were negatively correlated with the ALFF values of striatum, the ReHo values and the ALFF values of orbitofrontal cortex. Conclusions: It was indicated that the activities of the orbitofrontal cortex and the striatum in the resting state were related to the cooperative behavior in social dilemma after evaluation of social threats.关键词
社会评价威胁/囚徒困境/合作率/磁共振成像/局部一致性/低频振幅Key words
Social evaluation threats/Prisoner's dilemma/Cooperation rates/Magnetic resonance imaging/regional homogeneity/low-frequency fluctuation分类
医药卫生引用本文复制引用
陈卓,刘志远,郑丽,宁瑞鹏,郭秀艳..社会评价威胁对社会困境中决策行为的影响:基于静息态fMRI的研究[J].磁共振成像,2018,9(5):360-367,8.基金项目
国家社会科学基金重点项目(编号:14AZD106) （编号:14AZD106）
上海市自然科学基金项目(编号:14ZR1411300)This research was supported by the Key Program of the National Social Science Foundation of China(14AZD106)and Shanghai Municipality Natural Science Fund(14ZR1411300). （编号:14ZR1411300）
