Elevated responses to constant facial emotions in different faces in the human amygdala: an fMRI study of facial identity and expression.
Elevated responses to constant facial emotions in different faces in the human amygdala: an fMRI study of facial identity and expression.
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DOI：
10.1186/1471-2202-5-45
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发表时间：
2004-11-17
期刊：
影响因子：
2.4
通讯作者：
Büchel C
中科院分区：
文献类型：
--
作者：
Gläscher J;Tüscher O;Weiller C;Büchel C
人脸通过推断两种主要类型的信息，即个人身份和情感表达，在社会交往中提供了重要的信号。随时评估这两者的能力，即不同个体情绪表达的可变性和一致性，对于一个人自己对迫在眉睫的环境的解释至关重要。使用功能磁共振成像技术系统地测试了恒定或可变的情绪表达与恒定或可变的面部身份在涉及面部处理的区域中的相互作用。先前的研究表明，杏仁核在情绪变异性的评估中起着主导作用。在这里，我们扩展了这一观点，表明这种结构被激活到具有不断变化的身份的面部，这些面部表现出持续的情感表达。在这种情况下，杏仁核的激活取决于所表现的情绪的类型和强度，对恐惧的表情有显著的反应，对中性和快乐的表情的反应程度较低。相比之下，侧梭状回在处理不同的面部身份时，对表现出的情绪强度也有不同的反应，但对变化的刺激特征的激活增加呈二元模式。这些结果表明，杏仁核可能用于检测不同个体的恒定面部情绪，补充了其检测情绪变异性的既定作用。
Human faces provide important signals in social interactions by inferring two main types of information, individual identity and emotional expression. The ability to readily assess both, the variability and consistency among emotional expressions in different individuals, is central to one's own interpretation of the imminent environment. A factorial design was used to systematically test the interaction of either constant or variable emotional expressions with constant or variable facial identities in areas involved in face processing using functional magnetic resonance imaging. Previous studies suggest a predominant role of the amygdala in the assessment of emotional variability. Here we extend this view by showing that this structure activated to faces with changing identities that display constant emotional expressions. Within this condition, amygdala activation was dependent on the type and intensity of displayed emotion, with significant responses to fearful expressions and, to a lesser extent so to neutral and happy expressions. In contrast, the lateral fusiform gyrus showed a binary pattern of increased activation to changing stimulus features while it was also differentially responsive to the intensity of displayed emotion when processing different facial identities. These results suggest that the amygdala might serve to detect constant facial emotions in different individuals, complementing its established role for detecting emotional variability.
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影响因子：
16.2
作者：
Breiter, HC;Etcoff, NL;Rosen, BR
通讯作者：
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影响因子：
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作者：
Adolphs, R;Russell, JA;Tranel, D
通讯作者：
Tranel, D
DOI：
10.1177/1534582302001001003
发表时间：
2002-03-01
期刊：
Behavioral and cognitive neuroscience reviews
影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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