Computational substrates of social norm enforcement by unaffected third parties.
Computational substrates of social norm enforcement by unaffected third parties.
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DOI：
10.1016/j.neuroimage.2016.01.040
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发表时间：
2016-04-01
期刊：
影响因子：
5.7
通讯作者：
Chew SH
中科院分区：
文献类型：
--
作者：
Zhong S;Chark R;Hsu M;Chew SH
在人类物种中，公正的旁观者对社会规范的执行揭示了一种可能独特的能力，即从第三方的角度感知和执行规范。然而，这样的行为，不能用目前基于自我中心的规范概念的计算模型来解释。在这里，使用基于模型的功能磁共振成像和第三方惩罚游戏相结合，我们表明，大脑区域先前牵连在自我中心的规范执法严重扩展到规范执法的重要情况下，不受影响的第三方。具体来说，我们发现，在前扣带回和前额叶皮层的反应与分布不平等的检测呈正相关，而在前DLPFC与违反者的意向性评估。此外，在制裁决定期间，制裁的主观价值调节了vmPFC和rTPJ的活动。这些结果揭示了第三方惩罚的神经计算基础和人类规范执行的进化起源。
Enforcement of social norms by impartial bystanders in the human species reveals a possibly unique capacity to sense and to enforce norms from a third party perspective. Such behavior, however, cannot be accounted by current computational models based on an egocentric notion of norms. Here, using a combination of model-based fMRI and third party punishment games, we show that brain regions previously implicated in egocentric norm enforcement critically extend to the important case of norm enforcement by unaffected third parties. Specifically, we found that responses in the ACC and insula cortex were positively associated with detection of distributional inequity, while those in the anterior DLPFC were associated with assessment of intentionality to the violator. Moreover, during sanction decisions, the subjective value of sanctions modulated activity in both vmPFC and rTPJ. These results shed light on the neurocomputational underpinnings of third party punishment and evolutionary origin of human norm enforcement.
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