磁共振成像2018，Vol.9Issue(6)：446-452,7.DOI:10.12015/issn.1674-8034.2018.06.009
他人决策行为对个体风险决策的影响:基于静息态fMRI研究
The impact of others' decision on individual risk-taking behavior:A rs-fMRI study
摘要
Abstract
Objective:By combining the sequential risk taking task and the resting-state functional magnetic resonance imaging(rs-fMRI)technique,the current study tried to investigate the influence of others' risk-taking behavior on the individual's emotion and risk-taking behavior.Materials and Methods: After the scanning of rs-fMRI,participants were asked to finish the sequential risk taking task.In the each trial of the task,participants firstly could get the information of others' outcome.Others' outcomes were divided into good,general and poor conditions.Secondly,participants were asked to rate their feelings on a 9-point scale towards others' outcome.Finally,participants finished a similar risk-taking task.After the experiment,participants were asked to fill out the social comparison orientation scale.In the current study,we calculated three indexes to describe the individual differences:(1)The tendency of individual's social comparison,which was measured by the social comparison orientation scale.(2)The sensitivity of individual's emotion to others' outcomes,which was defined as the difference of the participants' emotional ratings towards others' different outcomes.(3)The sensitivity of individual's behavior changing to others' outcomes,which was defined as the difference of the participants' behavior changing after others' different outcomes.Besides,DPARSFA toolbox was used to calculate the functional connectivity(FC)among orbitofrontal cortex(OFC),striatum and inferior parietal lobule(IPL)and calculate the regional homogeneity(ReHo)value.Then,correlation analysis was conducted to examine the relationship between rs-fMRI data(FC and ReHo values)and the three indexes of individual differences.Results: The results showed that the tendency of individual's social comparison was positively correlated with the functional connectivity between left OFC and right striatum.Moreover,the sensitivity of individual's behavior changing to others' outcomes was negatively correlated with the functional connectivity between left striatum and right IPL.In addition,the sensitivity of individual's behavior changing to others' outcomes was negatively correlated with the ReHo value of right OFC.Conclusions: The functional connectivity among OFC,striatum and IPL,as well as the ReHo value of OFC are associated with the impact of others' outcomes on individual's emotion and risk-taking behavior.关键词
连续风险决策任务/磁共振成像,功能性/功能连接/局部一致性/眶额叶皮层/纹状体/顶下小叶Key words
Sequential risk taking task/Magnetic resonance imaging, functional/Functional connectivity/Regional homogeneity/Orbitofrontal cortex/Striatum/Inferior parietal lobule分类
医药卫生引用本文复制引用
徐佳琳,郑丽,刘志远,杨光,郭秀艳..他人决策行为对个体风险决策的影响:基于静息态fMRI研究[J].磁共振成像,2018,9(6):446-452,7.基金项目
国家社会科学基金重点项目(编号:14AZD106) （编号:14AZD106）
全国教科规划青年项目(编号:CBA160186).This work was part of Key Program of the National Social Science Foundation of China (No.14AZD106) （编号:CBA160186）
National Educational Science for Youth Foundation of China (No.CBA160186). （No.CBA160186）
