Decomposing unpleasantness: Differential exogenous attention to disgusting and fearful stimuli
Decomposing unpleasantness: Differential exogenous attention to disgusting and fearful stimuli
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DOI：
10.1016/j.biopsycho.2010.12.005
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发表时间：
2011-03-01
影响因子：
2.6
通讯作者：
Albert, J.
中科院分区：
文献类型：
--
作者：
Carretie, L.;Ruiz-Padial, E.;Albert, J.
负面刺激一直被证明能有效地吸引外源性的注意。两种不同类型的令人不快的刺激，恶心和恐惧，具有相似的唤醒和效价，通常被用作一个单一的类别。然而，由于它们在几个重要方面(生物功能、相关感觉以及中枢和外周生理关联)上存在差异，因此可以预期它们吸引注意力的潜力是不同的。受试者在进行数字分类任务时，记录了事件相关电位和行为指数，以应对三种类型的无关、分散注意力的图片：恶心、恐惧和中性。反应时间和错误次数显示，在数字分类任务中，恶心的尝试比恐惧的尝试表现更差。此外，与P2相关的楔叶激活和头皮前部P2波幅对于恶心的人比对于恐惧的分心者更大。所有这些指标都表明，在本研究使用的实验条件下，恶心的分心者比恐惧的分心者更能有效地吸引外部注意力。(C)2010爱思唯尔B.V.保留所有权利。
Negative stimuli have consistently been shown to efficiently attract exogenous attention. Two different types of unpleasant stimuli, disgusting and fearful, sharing similar arousal and valence, are usually employed as a single category. However, since they diverge in several important aspects (biological functionality, associated feelings, and central and peripheral physiological correlates), it may be expected that their potential to capture attention differs. Event-related potentials and behavioral indices were recorded while participants were engaged in a digit categorization task in response to three types of irrelevant, distracting pictures: disgusting, fearful and neutral. Disgusting trials were associated with worse performance than fearful trials in the digit categorization task as revealed by reaction times and number of errors. Moreover, P2-associated cuneus activation and scalp anterior P2 amplitude were greater for disgusting than for fearful distracters. All these indices reveal that, under the experimental conditions employed in the present study, disgusting distracters are more efficient at attracting exogenous attention than are fearful distracters. (C) 2010 Elsevier B.V. All rights reserved.