Neurophysiological mechanisms in the emotional modulation of attention: The interplay between threat sensitivity and attentional control
Neurophysiological mechanisms in the emotional modulation of attention: The interplay between threat sensitivity and attentional control
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DOI：
10.1016/j.biopsycho.2007.05.001
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发表时间：
2007-09-01
影响因子：
2.6
通讯作者：
Chen, Chao-Cheng
中科院分区：
文献类型：
--
作者：
Dennis, Tracy A.;Chen, Chao-Cheng
处理与任务无关的情感信息可能会损害注意力表现，特别是那些表现出威胁敏感性升高的人。然而，如果威胁敏感的个体能够招募注意力控制来抑制情绪处理，那么他们的注意力表现可能不会下降。为了检验这一假设，在三个领域的注意力表现进行了测量-警觉，定向，和执行注意。任务无关的恐惧，悲伤和快乐的面孔，提出了50毫秒之前，每次审判的注意力任务，以创造一个温和的竞争性的情绪环境。用64个头皮电极记录面部事件相关电位（ERP）。报告高威胁敏感性的参与者表现出增强的ERP，被认为反映了情绪处理（P200）和注意力控制（P100和N200）。增强的N200以下可怕的面孔与持续的，甚至略有改善的执行注意力表现（减少冲突干扰）之间的高威胁敏感的个人，但与递减的执行注意力之间的低威胁敏感的个人。结果进行了讨论，在认知处理效率和威胁的敏感性和注意力控制之间的平衡，执行注意力的表现。研究结果可能对理解与焦虑相关的自动和自愿注意力偏差有影响。(c)2007 Elsevier B. V.保留所有权利。
Processing task-irrelevant emotional information may compromise attention performance, particularly among those showing elevated threat sensitivity. If threat-sensitive individuals are able to recruit attentional control to inhibit emotional processing, however, they may show few decrements in attention performance. To examine this hypothesis, attention performance was measured in three domains-alerting, orienting, and executive attention. Task-irrelevant fearful, sad, and happy faces were presented for 50 ms before each trial of the attention task to create a mildly competitive emotional context. Electroencephalographic recordings were made from 64 scalp electrodes to generate event-related potentials (ERPs) to the faces. Participants reporting high threat sensitivity showed enhanced ERPs thought to reflect emotional processing (P200) and attentional control (P100 and N200). Enhanced N200 following fearful faces was linked to sustained and even slightly improved executive attention performance (reduced conflict interference) among high threat-sensitive individuals, but with decrements in executive attention among low threat-sensitive individuals. Results are discussed in terms of cognitive processing efficiency and the balance between threat sensitivity and attentional control in relation to executive attention performance. Results may have implications for understanding automatic and voluntary attentional biases related to anxiety. (c) 2007 Elsevier B.V. All rights reserved.