The facilitated processing of threatening faces:: An ERP analysis
The facilitated processing of threatening faces:: An ERP analysis
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DOI：
10.1037/1528-3542.4.2.189
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发表时间：
2004-06-01
期刊：
影响因子：
4.2
通讯作者：
Hamm, AO
中科院分区：
文献类型：
--
作者：
Schupp, HT;Öhman, A;Hamm, AO
采用威胁性、友好性和中性面孔来检验威胁性面孔的易化知觉加工假说。密集传感器事件相关的脑电位进行了测量，而受试者看到面部刺激。受试者没有明确的任务，情绪分类的面孔。评估早期知觉刺激的处理，威胁的面孔引起了早期的后验消极相比，非威胁性的中性或友好的表情。此外，在刺激加工的后期，面部威胁也引起了增强的晚期正电位相对于其他面部表情，表明这些刺激的更精细的知觉分析。总之，这些数据表明，促进知觉加工的威胁面孔。结果在恐惧的进化模块的背景下进行了讨论（A。Ohman & S. Mineka，2001年）。
Threatening, friendly, and neutral faces were presented to test the hypothesis of the facilitated perceptual processing of threatening faces. Dense sensor event-related brain potentials were measured while subjects viewed facial stimuli. Subjects had no explicit task for emotional categorization of the faces. Assessing early perceptual stimulus processing, threatening faces elicited an early posterior negativity compared with nonthreatening neutral or friendly expressions. Moreover, at later stages of stimulus processing, facial threat also elicited augmented late positive potentials relative to the other facial expressions, indicating the more elaborate perceptual analysis of these stimuli. Taken together, these data demonstrate the facilitated perceptual processing of threatening faces. Results are discussed within the context of an evolved module of fear (A. Ohman & S. Mineka, 2001).