Affective primes suppress attention bias to threat in socially anxious individuals
Affective primes suppress attention bias to threat in socially anxious individuals
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DOI：
10.1016/j.brat.2008.03.011
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发表时间：
2008-07-01
影响因子：
4.1
通讯作者：
Fox, Nathan A.
中科院分区：
文献类型：
--
作者：
Helfinstein, Sarah M.;White, Lauren K.;Fox, Nathan A.
焦虑的人对威胁性信息表现出注意力偏差。然而，在持续的环境威胁的情况下，这种原本存在的注意力偏差就会消失。目前尚不清楚这种注意力偏差的抑制是否是由恐惧系统的短暂激活引起的。在本实验中，高社交焦虑和低社交焦虑个体（HSA 组，n = 12；LSA 组，n = 12）执行了修改后的点探测任务，其中在每次试验之前向他们展示中性或社交威胁的主要词。收集脑电图并计算主要和面部显示的 ERP 组件。 HSA个体在中性高峰期后表现出对威胁的注意偏差，但在威胁性高峰期后没有注意偏差，这表明在恐惧系统短暂激活后可能会发生注意偏差的抑制。 LSA个体表现出相反的模式：没有证据表明对中性素数的威胁有偏见，但在威胁性素数之后诱导了对威胁的注意偏见。 ERP 结果表明 HSA 和 LSA 个体对素数和面部显示的处理存在差异。然而，没有发现任何 ERP 组件按主要交互进行分组。 (c) 2008 Elsevier Ltd. 保留所有权利。
Anxious individuals show an attention bias towards threatening information. However, under conditions of sustained environmental threat this otherwise-present attention bias disappears. It remains unclear whether this suppression of attention bias can be caused by a transient activation of the fear system. In the present experiment, high socially anxious and low socially anxious individuals (HSA group, n = 12; LSA group, n = 12) performed a modified dot-probe task in which they were shown either a neutral or socially threatening prime word prior to each trial. EEG was collected and ERP components to the prime and faces displays were computed. HSA individuals showed an attention bias to threat after a neutral prime, but no attention bias after a threatening prime, demonstrating that suppression of attention bias can occur after a transient activation of the fear system. LSA individuals showed an opposite pattern: no evidence of a bias to threat with neutral primes but induction of an attention bias to threat following threatening primes. ERP results suggested differential processing of the prime and faces displays by HSA and LSA individuals. However, no group by prime interaction was found for any of ERP components. (c) 2008 Elsevier Ltd. All rights reserved.