Attitudes to the right- and left: Frontal ERP asymmetries associated with stimulus valence and processing goals
Attitudes to the right- and left: Frontal ERP asymmetries associated with stimulus valence and processing goals
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DOI：
10.1016/j.neuroimage.2005.04.044
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发表时间：
2005-12-01
期刊：
影响因子：
5.7
通讯作者：
Zelazo, PD
中科院分区：
文献类型：
--
作者：
Cunningham, WA;Espinet, SD;Zelazo, PD
我们使用密集阵列事件相关电位（ERP）来研究评价性加工的时间过程和神经基础。参与者对社会相关概念（例如，“谋杀”，“福利”），然后对所有概念进行善恶评级。结果显示，晚正电位（LPP）开始于约475毫秒刺激后，最大的前网站。LPP是偏侧的（更高的振幅和更短的潜伏期），在右边的概念，后来被评为坏，和左边的概念，后来被评为好。此外，当被试进行评价性判断时，波幅的偏侧化程度比进行非评价性判断时大，而潜伏期的偏侧化程度则没有显著差异。这些数据是一致的模型，其中离散区域的前额叶皮层（PFC）专门用于评价性处理的积极和消极的刺激。(c)2005年爱思唯尔公司All rights reserved.
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.