Au th or ' s pe rs on al co py Emotional face processing and attention performance in three domains : Neurophysiological mechanisms and moderating effects of trait anxiety
Au th or ' s pe rs on al co py Emotional face processing and attention performance in three domains : Neurophysiological mechanisms and moderating effects of trait anxiety
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发表时间：
2007
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通讯作者：
Tracy A. Dennis;Chao-Cheng Chen
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作者：
Tracy A. Dennis;Chao-Cheng Chen
情绪信息的快速处理可以适应性地调节注意力的分配，但也可能会转移用于注意力表现的资源，特别是对于那些表现出高度焦虑的人。然而，快速情绪处理的时间组织及其对注意力表现的影响仍不清楚。参与者是 18 名健康成年人（12 名女性），他们报告了特质焦虑。在每次试验测量警报、定向和执行注意力的提示注意力任务之前，会呈现与任务无关的恐惧、悲伤和中性面孔 50 毫秒。通过 64 个头皮电极进行脑电图记录，以生成面部事件相关电位 (ERP)。情绪面孔类型和特质焦虑在 200 毫秒、250 毫秒和 320 毫秒左右的三个早期阶段调节 ERP 反应。尽管行为研究结果表明，在出现恐惧和悲伤的面孔后，定向和执行注意力增强，但这些面孔调节 ERP 反应的程度，尤其是 250 毫秒左右，干扰了高特质焦虑组的定向和执行注意力，并增强了低特质焦虑组的警觉性。结果从注意力的情感捕获机制以及对理解焦虑中注意力过程的影响进行了讨论。 © 2007 Elsevier B.V. 保留所有权利。
The rapid processing of emotional information adaptively regulates the allocation of attention, but may also divert resources away from attention performance, particularly for those showing elevated anxiety. The temporal organization of rapid emotional processing and its implications for attention performance, however, remain unclear. Participants were 18 healthy adults (12 females) who reported on trait anxiety. Tasks-irrelevant fearful, sad, and neutral faces were presented for 50 ms prior to each trial of a cued attention task measuring alerting, orienting, and executive attention. Electroencephalographic recordings were made from 64 scalp electrodes to generate event-related potentials (ERPs) to faces. Emotional face type and trait anxiety modulated ERP responses at three early stages around 200 ms, 250 ms, and 320 ms. Although behavioral findings showed enhanced orienting and executive attention following presentation of fearful and sad faces, the degree to which these faces modulated ERP responses, particularly around 250 ms, interfered with orienting and executive attention in the high trait anxiety group, and enhanced alerting in the low trait anxiety group. Results are discussed in terms of mechanisms in the emotional capture of attention and implications for understanding attentional processes in anxiety. © 2007 Elsevier B.V. All rights reserved.