His or mine? The time course of self-other discrimination in emotion processing
His or mine? The time course of self-other discrimination in emotion processing
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DOI：
10.1080/17470919.2010.523543
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发表时间：
2011-01-01
影响因子：
2
通讯作者：
Pauli, Paul
中科院分区：
文献类型：
--
作者：
Herbert, Cornelia;Herbert, Beate M.;Pauli, Paul
本脑电图研究了情绪加工中自我-他人歧视发生的时间加工阶段。23名健康受试者在默读不愉快的、愉快的和中性的代词-名词和冠词-名词表达时记录脑电图，这些表达与受试者自己有关，与未知的第三人称有关，或根本没有自我-他人指涉。早在刺激开始200 ms后，与自我和他人相关的代词-名词对在左后侧电极上相对于文章-名词对产生了更大的皮层负性。在相同的时间窗内（200 ~ 300 ms和300 ~ 400 ms），词语的情绪性增强了顶枕电极的事件相关脑电位（ERP）振幅。从350毫秒开始，处理与自我相关的不愉快词汇比处理与他人相关或根本没有参考的不愉快词汇引发了更大的额叶负性。此外，在刺激开始450 ms后，在顶叶电极上处理令人愉快的单词比处理中性或不愉快的单词能激发出更大的正振幅，特别是当单词与自我相关时。我们的研究结果表明，对于言语情绪刺激，自我-他人歧视首先发生在高阶的皮层加工阶段。这与根据某些刺激方面（自我-他人参照、情绪）对信息进行分类发生在其意义整合之前的观点是一致的。
This electroencephalography (EEG) study investigated at which temporal processing stages self-other discrimination in emotion processing occurs. EEG was recorded in 23 healthy participants during silent reading of unpleasant, pleasant, and neutral pronoun-noun and article-noun expressions that were related to the participants themselves, related to an unknown third person, or had no self-other reference at all. Self- and other-related pronoun-noun pairs elicited larger cortical negativity relative to the processing of article-noun pairs at left posterior electrodes as early as 200 ms after stimulus onset. In the same time windows (from 200 ms to 300 ms and 300 ms to 400 ms) the emotionality of the words enhanced event-related brain potential (ERP) amplitudes at parieto-occipital electrodes. From 350 ms onwards, processing of self-related unpleasant words elicited larger frontal negativity compared to unpleasant words that were related to the other or that had no reference at all. In addition, processing of pleasant words vs. neutral or unpleasant words elicited larger positive amplitudes over parietal electrodes from 450 ms after stimulus onset, in particular when words were self-related. Our findings demonstrate that for verbal emotional stimuli, self-other discrimination first occurs at higher-order, cortical processing stages. This is consistent with the view that categorization of information according to certain stimulus aspects (self-other reference, emotionality) occurs before its meaning is integrated.