Emotion and attention in visual word processing-An ERP study
Emotion and attention in visual word processing-An ERP study
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DOI：
10.1016/j.biopsycho.2008.03.004
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发表时间：
2009-01-01
影响因子：
2.6
通讯作者：
Junghofer, Markus
中科院分区：
文献类型：
--
作者：
Kissler, Johanna;Herbert, Cornelia;Junghofer, Markus
在无声阅读过程中，情绪性词语优先被加工。在这里，我们调查到什么程度的不同组成部分的视觉诱发电位，即P1，N1，早期后负波（EPN，约250毫秒后的字发病），以及后期的积极复杂（LPC，约500毫秒）不同的情绪词的反应，以及这种反应是否依赖于注意力资源的可用性。受试者随机观看愉快的，中性的和不愉快的形容词和名词。他们首先被要求简单地阅读单词，然后计算形容词或名词。P1和N1没有出现一致的影响。然而，在这两个阅读和计数的EPN增强情绪唤起的话（愉快和不愉快），无论这个词是否属于一个目标或非目标类别。EPN上的任务效应仅限于形容词，但这种效应与情感内容没有相互作用。较晚的中央-顶叶LPC（450-650 ms）显示了对所关注的词类的大幅度增强。一个小的和地形不同的情绪LPC效应被发现特别是在愉快的话，无论是在安静的阅读和主动任务。因此，情感词的内容被毫不费力地自动处理，并且不受主要语法决策任务的干扰。这些结果与其他早期自动语义处理的报告一致，这些报告反映了在单词开始后250 ms左右的ERP中的后负性。在大脑中的情绪-注意力相互作用的模型的影响进行了讨论。(c)2008 Elsevier B. V.保留所有权利。
Emotional words are preferentially processed during silent reading. Here, we investigate to what extent different components of the visual evoked potential, namely the P1, N1, the early posterior negativity (EPN, around 250 ms after word onset) as well as the late positive complex (LPC, around 500 ms) respond differentially to emotional words and whether this response depends on the availability of attentional resources. Subjects viewed random sequences of pleasant, neutral and unpleasant adjectives and nouns. They were first instructed to simply read the words and then to count either adjectives or nouns. No consistent effects emerged for the P1 and N1. However, during both reading and counting the EPN was enhanced for emotionally arousing words (pleasant and unpleasant), regardless of whether the word belonged to a target or a non-target category. A task effect on the EPN was restricted to adjectives, but the effect did not interact with emotional content. The later centro-parietal LPC (450-650 ms) showed a large enhancement for the attended word class. A small and topographically distinct emotion-LPC effect was found specifically in response to pleasant words, both during silent reading and the active task. Thus, emotional word content is processed effortlessly and automatically and is not subject to interference from a primary grammatical decision task. The results are in line with other reports of early automatic semantic processing as reflected by posterior negativities in the ERP around 250 ms after word onset. Implications for models of emotion-attention interactions in the brain are discussed. (c) 2008 Elsevier B.V. All rights reserved.