Friend or foe? Brain systems involved in the perception of dynamic signals of menacing and friendly social approaches
Friend or foe? Brain systems involved in the perception of dynamic signals of menacing and friendly social approaches
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DOI：
10.1080/17470910801903431
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发表时间：
2008-06-01
影响因子：
2
通讯作者：
Pelphrey, Kevin A.
中科院分区：
文献类型：
--
作者：
Carter, Elizabeth J.;Pelphrey, Kevin A.
在每一种社交方式中，人类都必须评估彼此的意图。面部表情通过与情绪、隶属关系的可能性和个性的关联提供线索来协助这些评估。在这项功能性磁共振成像 (fMRI) 研究中，参与者观看了走廊中接近他们的动画男性角色，并做出了快乐或愤怒的面部表情。发现表达愤怒时杏仁核和颞上沟的激活预期会增加。值得注意的是，另外两个社交大脑区域相对于快乐，对愤怒的血流动力学反应也有所增加，包括外侧梭状回和以颞中回为中心的区域。其他大脑区域几乎没有表现出差异，或者对快乐刺激的活动水平有所增加。这些发现提供了对在公开的社会背景下解读其他人的意图所涉及的大脑机制的深入了解。特别是，他们证明了大脑区域对统治和归属的社会信号敏感。
During every social approach, humans must assess each other's intentions. Facial expressions provide cues to assist in these assessments via associations with emotion, the likelihood of affiliation, and personality. In this functional magnetic resonance imaging (fMRI) study, participants viewed animated male characters approaching them in a hallway and making either a happy or an angry facial expression. An expected increase in amygdala and superior temporal sulcus activation to the expression of anger was found. Notably, two other social brain regions also had an increased hemodynamic response to anger relative to happiness, including the lateral fusiform gyrus and a region centered in the middle temporal gyrus. Other brain regions showed little differentiation or an increased level of activity to the happy stimuli. These findings provide insight into the brain mechanisms involved in reading the intentions of other human beings in an overtly social context. In particular, they demonstrate brain regions sensitive to social signals of dominance and affiliation.