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首页> 外文期刊>Frontiers in Evolutionary Neuroscience >Is dorsal anterior cingulate cortex activation in response to social exclusion due to expectancy violation? An fMRI study
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Is dorsal anterior cingulate cortex activation in response to social exclusion due to expectancy violation? An fMRI study

机译：背侧前扣带回皮质激活是由于预期违规导致的社会排斥吗？功能磁共振成像研究

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People are typically quite sensitive about being accepted or excluded by others. Previous studies have suggested that the dorsal anterior cingulate cortex (dACC) is a key brain region involved in the detection of social exclusion. However, this region has also been shown to be sensitive to non-social expectancy violations. We often expect other people to follow an unwritten rule in which they include us as they would expect to be included, such that social exclusion likely involves some degree of expectancy violation. The present event-related functional magnetic resonance imaging (fMRI) study sought to separate the effects of expectancy violation from those of social exclusion, such that we employed an “overinclusion” condition in which a player was unexpectedly overincluded in the game by the other players. With this modification, we found that the dACC and right ventrolateral prefrontal cortex (rVLPFC) were activated by exclusion, relative to overinclusion. In addition, we identified a negative correlation between exclusion-evoked brain activity and self-rated social pain in the rVLPFC, but not in the dACC. These findings suggest that the rVLPFC is critical for regulating social pain, whereas the dACC plays an important role in the detection of exclusion. The neurobiological basis of social exclusion is different from that of mere expectancy violation.
机译：人们通常对被他人接受或排斥非常敏感。先前的研究表明，背扣带前皮质（dACC）是参与社会排斥检测的关键大脑区域。但是，该地区也显示出对违反非社会期望的行为很敏感。我们经常期望别人遵循一个不成文的规则，在这些规则中他们会像我们期望的那样包括我们，因此社会排斥可能涉及某种程度的预期违背。当前的事件相关功能磁共振成像（fMRI）研究试图将预期违规的影响与社会排斥的影响区分开，以至于我们采用了一种“过度包含”条件，其中一名玩家被其他玩家意外地过度包含在游戏中。通过此修改，我们发现dACC和右前外侧前额叶皮层（rVLPFC）相对于过度包埋被排斥激活。此外，我们在rVLPFC中发现排斥引起的大脑活动与自我评估的社交疼痛之间呈负相关，而在dACC中则没有。这些发现表明，rVLPFC对于调节社会痛苦至关重要，而dACC在检测排斥中起着重要作用。社会排斥的神经生物学基础不同于单纯的预期违背。

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