Attitudes to the right- and left: Frontal ERP asymmetries associated with stimulus valence and processing goals

被引：113

作者：

Cunningham, WA ^{[1
]}

Espinet, SD ^{[1
]}

DeYoung, CG ^{[1
]}

Zelazo, PD ^{[1
]}

机构：

[1] Univ Toronto, Dept Psychol, Toronto, ON M5S 3G3, Canada

来源：

NEUROIMAGE | 2005年 / 28卷 / 04期

基金：

加拿大创新基金会; 加拿大自然科学与工程研究理事会;

关键词：

prefrontal cortex; hemispheric asymmetry; evaluation; valence;

D O I：

10.1016/j.neuroimage.2005.04.044

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

We used dense-array event-related potentials (ERP) to examine the time course and neural bases of evaluative processing. Participants made good vs. bad (evaluative) and abstract vs. concrete (nonevaluative) judgments of socially relevant concepts (e.g., "murder," "welfare"), and then rated all concepts for goodness and badness. Results revealed a late positive potential (LPP) beginning at about 475 ms post-stimulus and maximal over anterior sites. The LPP was lateralized (higher amplitude and shorter latency) on the right for concepts later rated bad, and on the left for concepts later rated good. Moreover, the degree of lateralization for the amplitude but not the latency was larger when participants were making evaluative judgments than when they were making nonevaluative judgments. These data are consistent with a model in which discrete regions of prefrontal cortex (PFC) are specialized for the evaluative processing of positive and negative stimuli. (c) 2005 Elsevier Inc. All rights reserved.

引用

页码：827 / 834

页数：8

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