Fear-conditioned cues of impending pain facilitate attentional engagement
Fear-conditioned cues of impending pain facilitate attentional engagement
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DOI：
10.1016/j.neucli.2003.11.001
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发表时间：
2004-02-01
影响因子：
3
通讯作者：
Crombez, G
中科院分区：
文献类型：
--
作者：
Van Damme, S;Lorenz, J;Crombez, G
学习的目的。- 选择性地注意即将到来的疼痛信号可以避免身体伤害。为了确定参与疼痛信号的选择竞争的需求的注意组件，我们使用了一个情绪修饰的外源性线索task. Methods。- 52名无痛志愿者检测视觉目标的位置是正确或错误的预测的空间线索。线索的情绪调制使用差分经典条件反射。条件刺激（CS+）后有时会出现皮肤电刺激（UCS），从而成为疼痛信号，而皮肤电刺激从不跟随另一种刺激（CS-），称为安全信号。- 对反应时间的分析表明，与安全信号相比，疼痛信号有助于将注意力引导到它们的位置。与此相反，疼痛信号并没有损害注意力从他们的位置相比，安全信号的分离。- 它的结论是，注意力更强烈地参与到一个即将到来的疼痛的信号相比，一个线索信号的情况下。我们探讨了为什么与安全信号相比，脱离疼痛信号并没有受到损害。研究结果进行了讨论的防御疼痛预期的重要性。(C)2003年，Elsevier SAS。All rights reserved.
Aims of study. - Selective attention to signals of impending pain allows the avoidance of bodily harm. In order to identify the attentional components involved in the selection of pain signals over competing demands, we used an emotional modification of an exogenous cueing task.Methods. - Fifty-two pain-free volunteers detected visual targets of which the location was correctly or incorrectly predicted by a spatial cue. Cues were emotionally modulated using differential classical conditioning. The conditioned cue (CS+) was sometimes followed by an electrocutaneous stimulus (UCS), thus becoming a pain signal, whereas the UCS never followed the other cue (CS-), referred to as safety signal.Results. - Analyses of response times showed that pain signals facilitated the directing of attention to their location in comparison to safety signals. In contrast, pain signals did not impair disengagement of attention from their location in comparison to safety signals.Conclusion. - It is concluded that attention is more strongly engaged to a signal of impending pain compared with a cue signalling its absence. We explore why disengagement from the pain signal is not impaired compared to the safety signal. The findings are discussed in terms of the defensive importance of pain anticipation. (C) 2003 Elsevier SAS. All rights reserved.