Time course of implicit processing and explicit processing of emotional faces and emotional words
Time course of implicit processing and explicit processing of emotional faces and emotional words
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DOI：
10.1016/j.biopsycho.2011.03.008
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发表时间：
2011-05-01
影响因子：
2.6
通讯作者：
Herrmann, Manfred
中科院分区：
文献类型：
--
作者：
Fruehholz, Sascha;Jellinghaus, Anne;Herrmann, Manfred
面部表情是社会交往中重要的情感刺激。象征性的情感线索，如情感词，也传达了与社会沟通相关的情感信息。各种研究表明，从文字中快速解码情感，如面部所示，而其他人则报告了从文字中解码情感信息的延迟。在这里，我们介绍了一个内隐（颜色命名）和外显任务（情绪判断）与面部表情和文字，都包含有关情绪的信息，直接比较情绪处理的时间过程中使用事件相关电位（ERP）。数据显示，只有消极的面孔影响任务绩效，导致错误率增加相比，中性的面孔。情绪面孔的呈现导致了N170、EPN和LPP成分的调制，这些调制在外显和内隐任务中都存在。情绪词只影响外显任务中的EPN，但对LPP的影响与任务无关。最后，情绪化的面孔调制的源活动在纹外皮层的N170，EPN和LPP组件的产生。情绪词导致调制源活动对应的EPN和LPP，但他们也影响了N170源的右半球。这些数据表明，面部表情影响情绪处理的早期阶段相比，情绪的话，但情绪的价值的话可能已经检测到在情绪处理的早期阶段在视觉皮层，所示的外纹源活动。(C)2011 Elsevier B.V.保留所有权利。
Facial expressions are important emotional stimuli during social interactions. Symbolic emotional cues, such as affective words, also convey information regarding emotions that is relevant for social communication. Various studies have demonstrated fast decoding of emotions from words, as was shown for faces, whereas others report a rather delayed decoding of information about emotions from words. Here, we introduced an implicit (color naming) and explicit task (emotion judgment) with facial expressions and words, both containing information about emotions, to directly compare the time course of emotion processing using event-related potentials (ERP). The data show that only negative faces affected task performance, resulting in increased error rates compared to neutral faces. Presentation of emotional faces resulted in a modulation of the N170, the EPN and the LPP components and these modulations were found during both the explicit and implicit tasks. Emotional words only affected the EPN during the explicit task, but a task-independent effect on the LPP was revealed. Finally, emotional faces modulated source activity in the extrastriate cortex underlying the generation of the N170, EPN and LPP components. Emotional words led to a modulation of source activity corresponding to the EPN and LPP, but they also affected the N170 source on the right hemisphere. These data show that facial expressions affect earlier stages of emotion processing compared to emotional words, but the emotional value of words may have been detected at early stages of emotional processing in the visual cortex, as was indicated by the extrastriate source activity. (C) 2011 Elsevier B.V. All rights reserved.