Perceiving fear in dynamic body expressions
Perceiving fear in dynamic body expressions
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DOI：
10.1016/j.neuroimage.2006.11.030
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发表时间：
2007-04-01
期刊：
影响因子：
5.7
通讯作者：
de Gelder, B.
中科院分区：
文献类型：
--
作者：
Grezes, J.;Pichon, S.;de Gelder, B.
特有的恐惧行为，如把皮带放在脸上，跑去躲避，向观察者发出了强烈的恐惧信号，而他们自己可能并没有意识到任何危险。利用人类事件相关功能磁共振成像(FMRI)，我们研究了来自全身的这种动态恐惧信号是如何被感知的。析因设计使我们能够调查由观看身体、身体恐惧表情以及动态信息在观看过程中所起的作用而引起的大脑活动。我们的关键发现有三个方面。我们发现，观看中性和恐惧的身体表情会增强杏仁核的活动；此外，表达恐惧的动作比中性动作更能激活颞极和外侧眼眶皮质；最后，与中性动作相比，在STS和运动前皮质中表达恐惧的动作在静态和动态身体表情上的激活差异更大。(C)2006 Elsevier Inc.保留所有权利。
Characteristic fear behaviour like putting the bands in front of the face and running for cover provides strong fear signals to observers who may not themselves be aware of any danger. Using event-related functional magnetic resonance imaging (fMRI) in humans, we investigated how such dynamic fear signals from the whole body are perceived. A factorial design allowed us to investigate brain activity induced by viewing bodies, bodily expressions of fear and the role of dynamic information in viewing them. Our critical findings are threefold. We find that viewing neutral and fearful body expressions enhances amygdala activity; moreover actions expressing fear activate the temporal pole and lateral orbital cortex more than neutral actions; and finally differences in activations between static and dynamic bodily expressions were larger for actions expressing fear in the STS and premotor cortex compared to neutral actions. (c) 2006 Elsevier Inc. All rights reserved.