Amygdala activation and facial expressions: Explicit emotion discrimination versus implicit emotion processing
Amygdala activation and facial expressions: Explicit emotion discrimination versus implicit emotion processing
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DOI：
10.1016/j.neuropsychologia.2007.01.023
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发表时间：
2007-01-01
期刊：
影响因子：
2.6
通讯作者：
Moser, Ewald
中科院分区：
文献类型：
--
作者：
Habel, Ute;Windischberger, Christian;Moser, Ewald
情绪识别对于社会互动和交流至关重要，杏仁核在其中发挥着核心作用。到目前为止，神经成像结果一直不一致，杏仁核是否在显式或偶然的面部情绪处理过程中更活跃。考虑到它的功能，在快速自动评估的刺激和参与高阶意识处理，我们假设一个类似的反应，无论注意力集中的情绪面孔。使用高场功能磁共振成像（fMRI），专门优化腹侧脑区，我们表现出强大的和强大的杏仁核激活的情绪面部表情的显式和隐式处理在29名健康受试者。然而，当受试者被要求识别情绪（外显条件）时，双侧杏仁核的激活明显大于被要求辨别年龄（内隐条件）时。杏仁核激活和情绪识别之间的显着相关性，而不是年龄歧视的表现，强调杏仁核的增强作用，在有意识的情绪处理。(c)2007年由Elsevier Ltd.出版
Emotion recognition is essential for social interaction and communication and is a capacity in which the amygdala plays a central role. So far, neuroimaging results have been inconsistent as to whether the amygdala is more active during explicit or incidental facial emotion processing. In consideration of its functionality in fast automatic evaluation of stimuli and involvement in higher-order conscious processing, we hypothesize a similar response to the emotional faces presented regardless of attentional focus. Using high field functional magnetic resonance imaging (fMRI) specifically optimized for ventral brain regions we show strong and robust amygdala activation for explicit and implicit processing of emotional facial expressions in 29 healthy subjects. Bilateral amygdala activation was, however, significantly greater when subjects were asked to recognize the emotion (explicit condition) than when required to discern the age (implicit condition). A significant correlation between amygdala activation and emotion recognition, but not age discrimination performance, emphasizes the amygdala's enhanced role during conscious emotion processing. (c) 2007 Published by Elsevier Ltd.