Explicit and incidental facial expression processing:: An fMRI study
Explicit and incidental facial expression processing:: An fMRI study
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DOI：
10.1006/nimg.2001.0811
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发表时间：
2001-08-01
期刊：
影响因子：
5.7
通讯作者：
Nichelli, P
中科院分区：
文献类型：
--
作者：
Gorno-Tempini, ML;Pradelli, S;Nichelli, P
相当多的证据表明，处理面部表情涉及皮质下（杏仁核和基底神经节）和皮质（枕颞，眶额，和前额皮质）结构。然而，这些区域对单一类型的情绪和表达处理的认知需求的特异性仍然不清楚。这项功能性磁共振成像（fMRI）研究调查了表达厌恶或快乐的面孔的情感内容的偶然和外显处理的神经相关性。当受试者看到中性、厌恶或快乐的面孔时，附带任务要求受试者决定面部性别，显式任务要求受试者决定面部表情。在控制任务中，受试者被要求在灰度马赛克刺激中检测白色正方形。结果表明，左下额叶皮层和双侧枕颞交界区对所有面部条件的反应是一样的。几个皮质和皮质下区域调制的任务类型，面部表情。右侧新纹状体。当被试做出厌恶的判断时，左侧杏仁核被激活，当被试做出快乐的判断时，双侧眶额皮层被激活，当被试做出任何情绪的判断时，右侧额叶和岛叶皮层被激活。(C)北京：科学出版社.
Considerable evidence indicates that processing facial expression involves both subcortical (amygdala and basal ganglia) and cortical (occipito-temporal, orbitofrontal, and prefrontal cortex) structures. However, the specificity of these regions for single types of emotions and for the cognitive demands of expression processing, is still unclear. This functional magnetic resonance imaging (fMRI) study investigated the neural correlates of incidental and explicit processing of the emotional content of faces expressing either disgust or happiness. Subjects were examined while they were viewing neutral, disgusted, or happy faces., The incidental task required subjects to decide about face gender, the explicit task to decide about face expression. In the control task subjects were requested to detect a white square in a greyscale mosaic stimulus. Results showed that the left inferior frontal cortex and the bilateral occipito-temporal junction responded equally to all face conditions. Several cortical and subcortical regions were modulated by task type, and by facial expression. Right neostriatum. and left amygdala were activated when subjects made explicit judgements of disgust, bilateral orbitofrontal cortex when they made judgement of happiness, and right frontal and insular cortex when they made judgements about any emotion. (C) 2001 Academic Press.