Division of Medical Psychology, University of Bonn, Bonn, Germany.
Center for Economics and Neuroscience, University of Bonn, Bonn, Germany.
Elife. 2019 Jul 22;8:e45249. doi: 10.7554/eLife.45249.
Social interactions have a major impact on well-being. While many individuals actively seek social situations, others avoid them, at great cost to their private and professional life. The neural mechanisms underlying individual differences in social approach or avoidance tendencies are poorly understood. Here we estimated people's subjective value of engaging in a social situation. In each trial, more or less socially anxious participants chose between an interaction with a human partner providing social feedback and a monetary amount. With increasing social anxiety, the subjective value of social engagement decreased; amygdala BOLD response during decision-making and when experiencing social feedback increased; ventral striatum BOLD response to positive social feedback decreased; and connectivity between these regions during decision-making increased. Amygdala response was negatively related to the subjective value of social engagement. These findings suggest a relation between trait social anxiety/social avoidance and activity in a subcortical network during social decision-making.
社交互动对幸福感有重大影响。虽然许多人积极寻求社交场合，但也有一些人回避社交场合，这给他们的私人和职业生活带来了巨大的代价。个体在社交接近或回避倾向方面的差异的神经机制还知之甚少。在这里，我们估计了人们参与社交情境的主观价值。在每次试验中，社交焦虑程度不同的参与者在与提供社交反馈的人类伙伴互动和获得一定金额的金钱之间做出选择。随着社交焦虑程度的增加，社交参与的主观价值降低；在做出决策和体验社交反馈时，杏仁核的大脑活动增加；对积极社交反馈的腹侧纹状体的大脑活动减少；在做出决策时，这些区域之间的连通性增加。杏仁核的反应与社交参与的主观价值呈负相关。这些发现表明，特质性社交焦虑/回避与社交决策过程中一个皮质下网络的活动之间存在关系。
