Event-related desynchronization in the EEG during emotional and cognitive information processing: Differential effects of extraversion
Event-related desynchronization in the EEG during emotional and cognitive information processing: Differential effects of extraversion
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DOI：
10.1016/j.biopsycho.2005.01.013
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发表时间：
2005-12-01
影响因子：
2.6
通讯作者：
Fink, A
中科院分区：
文献类型：
--
作者：
Fink, A
本研究的目的是分析人格维度外倾/内倾（E）对被试在情绪面孔和认知信息加工时脑电事件相关去兴奋化（ERD）水平和地形分布的影响。在这种情况下，我们建立在以前的研究处理的作用，E作为一个可能的调节变量在皮层激活模式在执行心理速度，推理和工作记忆任务（即，认知信息处理）。在33名内向者和33名外向者（31名男性，35名女性）的样本中，我们发现，当他们的任务是判断两个同时呈现的面部情绪的身份时，外向者的大脑皮层激活（左半球）比内向者低。这种效应仅在较高的α频带（类似于9.6-11.6 Hz）中观察到。在分析认知信息处理过程中的E差异时（即，E效应-受参与者性别的调节-被限制在较低的EEG（α）频率范围（类似于5.6-9.6 Hz）。结果表明，当不同类型的信息被处理时，E的参与程度不同。(c)2005 Elsevier B. V.保留所有权利。
The aim of the present study was to analyze the influence of the personality dimension extraversion/introversion (E) on the level and topographical distribution of event-related desynchronization (ERD) in the EEG whilst participants were engaged in emotional face and cognitive information processing. In this context we build up on former studies dealing with the role of E as a possible moderator variable in cortical activation patterns during performance of mental speed, reasoning and working memory tasks (i.e., cognitive information processing). In a sample of 33 introverts and 33 extraverts (31 were male, 35 female) we found extraverted individuals displaying a lower (left-hemispheric) cortical activation than introverts when their task was to judge the identity of two simultaneously presented facial emotions. This effect was only observed in the upper alpha frequency band (similar to 9.6-11.6 Hz). In analyzing E differences during cognitive information processing (i.e., performance of a verbal and a figural-spatial task) E effects - which were moderated by participants' sex - were restricted to lower EEG (alpha) frequency ranges (similar to 5.6-9.6 Hz). The results generally suggest that E is differently involved when different kinds of information are processed. (c) 2005 Elsevier B.V. All rights reserved.