文献类型： 外文期刊

作者： Gao, Xiaoxue ¹ ; Yu, Hongbo ¹ ; Saez, Ignacio ⁷ ; Blue, Philip R. ¹ ; Zhu, Lusha ² ; Hsu, Ming ⁷ ; Zhou, Xiaolin ¹ ;

作者机构： 1.Peking Univ, Ctr Brain & Cognit Sci, Beijing 100871, Peoples R China

2.Peking Univ, Sch Psychol & Cognit Sci, Beijing 100871, Peoples R China

3.Peking Univ, Key Lab Machine Percept, Minist Educ, Beijing 100871, Peoples R China

4.Peking Univ, Beijing Key Lab Behav & Mental Hlth, Beijing 100871, Peoples R China

5.Yale Univ, Dept Psychol, New Haven, CT 06520 USA

6.Univ Oxford, Dept Expt Psychol, Oxford OX2 6GG, England

7.Univ Calif Berkeley, Haas Sch Business, Berkeley, CA 94720 USA

8.Univ Calif Berkeley, Helen Wills Neurosci Inst, Berkeley, CA 94720 USA

9.Peking Univ, Peking Tsinghua Ctr Life Sci, Beijing 100871, Peoples R China

10.Peking Univ, IDG McGovern Inst Brain Res, Beijing 100871, Peoples R China

11.Zhejiang Normal Univ, Inst Psychol & Brain Sci, Jinhua 321004, Zhejiang, Peoples R China

关键词： advantageous inequity; disadvantageous inequity; guilt context; insula; fMRI

期刊名称：PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA （ 影响因子：11.205； 五年影响因子：12.291 ）

ISSN： 0027-8424

年卷期： 2018 年 115 卷 33 期

页码：

收录情况： SCI

摘要： Humans can integrate social contextual information into decision-making processes to adjust their responses toward inequity. This context dependency emerges when individuals receive more (i.e., advantageous inequity) or less (i.e., disadvantageous inequity) than others. However, it is not clear whether context-dependent processing of advantageous and disadvantageous inequity involves differential neurocognitive mechanisms. Here, we used fMRI to address this question by combining an interactive game that modulates social contexts (e.g., interpersonal guilt) with computational models that enable us to characterize individual weights on inequity aversion. In each round, the participant played a dot estimation task with an anonymous coplayer. The coplayer would receive pain stimulation with 50% probability when either of them responded incorrectly. At the end of each round, the participant completed a variant of dictator game, which determined payoffs for him/herself and the coplayer. Computational modeling demonstrated the context dependency of inequity aversion: when causing pain to the coplayer (i.e., guilt context), participants cared more about the advantageous inequity and became more tolerant of the disadvantageous inequity, compared with other conditions. Consistently, neuroimaging results suggested the two types of inequity were associated with differential neurocognitive substrates. While the context-dependent processing of advantageous inequity was associated with social-and mentalizing-related processes, involving left anterior insula, right dorsolateral prefrontal cortex, and dorsomedial prefrontal cortex, the context-dependent processing of disadvantageous inequity was primarily associated with emotion- and conflict-related processes, involving left posterior insula, right amygdala, and dorsal anterior cingulate cortex. These results extend our understanding of decision-making processes related to inequity aversion.