Amygdala and dorsomedial prefrontal cortex responses to appearance-based and behavior-based person impressions
Amygdala and dorsomedial prefrontal cortex responses to appearance-based and behavior-based person impressions
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DOI：
10.1093/scan/nsq086
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发表时间：
2011-10-01
影响因子：
4.2
通讯作者：
Todorov, Alexander
中科院分区：
文献类型：
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作者：
Baron, Sean G.;Gobbini, M. I.;Todorov, Alexander
我们探索了当面部表情和行为信息的情感价值受到操纵时，了解人的神经关联。向参与者展示了可信度高或低的面孔。随后，我们将这些面孔与积极、消极或没有行为信息配对。在形成面部行为关联之前，右侧杏仁核中的一个簇对不值得信任的面孔的反应比对值得信任的面孔的反应更强烈。在学习过程中，背内侧前额叶皮层（dmPFC）中的一个簇对与行为配对的面孔的反应比对未与行为配对的面孔的反应更强烈。我们还观察到 dmPFC 的活动与扫描后评估的行为学习表现相关。有趣的是，学习前杏仁核对面部可信度的初始反应的个体差异调节了 dmPFC 活动与学习之间的关系。这一发现表明杏仁核的活动可以影响 dmPFC 活动与学习之间的相互作用。
We explored the neural correlates of learning about people when the affective value of both facial appearance and behavioral information is manipulated. Participants were presented with faces that were either rated as high or low on trustworthiness. Subsequently, we paired these faces with positive, negative, or no behavioral information. Prior to forming face-behavior associations, a cluster in the right amygdala responded more strongly to untrustworthy than to trustworthy faces. During learning, a cluster in the dorsomedial prefrontal cortex (dmPFC) responded more strongly to faces paired with behaviors than faces not paired with behaviors. We also observed that the activity in the dmPFC was correlated with behavioral learning performance assessed after scanning. Interestingly, individual differences in the initial amygdala response to face trustworthiness prior to learning modulated the relationship between dmPFC activity and learning. This finding suggests that the activity of the amygdala can affect the interaction between dmPFC activity and learning.