Potential Threat Attracts Attention and Interferes With Voluntary Saccades
Potential Threat Attracts Attention and Interferes With Voluntary Saccades
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DOI：
10.1037/emo0000041
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发表时间：
2015-06-01
期刊：
影响因子：
4.2
通讯作者：
Theeuwes, Jan
中科院分区：
文献类型：
--
作者：
Schmidt, Lisette J.;Belopolsky, Artem V.;Theeuwes, Jan
一些研究表明，视觉系统会优先考虑威胁性刺激。在本研究中，我们调查是否与电击的威胁相关的刺激引起注意，并因此干扰执行自愿眼球运动到其他位置。在2个实验中，我们发现，当一个恐惧条件和中性刺激同时呈现，自愿眼跳启动更快地向恐惧条件相比，中性刺激。此外，即使需要扫视到不同的位置，扫视也经常错误地去到威胁的位置。这意味着注意力自动转移到干扰眼跳执行的恐惧条件刺激。同样的结果模式也出现在中性刺激上，中性刺激总是与恐惧条件刺激一起出现，因此它本身就与威胁有关。目前的研究结果表明，威胁性刺激吸引视觉注意力，并随后偏见眼跳目标选择的反射方式。
Several studies have shown that threatening stimuli are prioritized by the visual system. In the present study we investigated whether a stimulus associated with a threat of electrical shock attracts attention and accordingly interferes with the execution of voluntary eye movements to other locations. In 2 experiments, we showed that when a fear-conditioned and a neutral stimulus were presented simultaneously, voluntary saccades were initiated faster toward fear-conditioned compared with neutral stimuli. Moreover, saccades often erroneously went to the location of threat even when a saccade to a different location was required. This implies an automatic shift of attention to a fear-conditioned stimulus that interferes with saccade execution. The same pattern of results was found for a neutral stimulus that was always presented together with the fear-conditioned stimulus and consequently itself became associated with threat. The current results indicate that threatening stimuli attract visual attention and subsequently bias saccade target selection in a reflexive fashion.