Conditioned Fear Modulates Visual Selection
Conditioned Fear Modulates Visual Selection
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DOI：
10.1037/a0031076
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发表时间：
2013-06-01
期刊：
影响因子：
4.2
通讯作者：
Van der Stigchel, Stefan
中科院分区：
文献类型：
--
作者：
Mulckhuyse, Manon;Crombez, Geert;Van der Stigchel, Stefan
眼球运动反映了自上而下和自下而上驱动过程之间的动态相互作用。例如，当我们自愿地在整个视野中移动我们的眼睛时，环境中的显著视觉刺激可能会吸引我们的注意力，我们的眼睛，或者调节眼睛运动的轨迹。先前的研究表明，一个显着刺激的行为相关性调节这些过程。本研究探讨是否刺激信号的厌恶事件调制扫视行为。使用差异恐惧条件反射程序，我们在眼球运动选择任务中呈现了威胁性（条件刺激：CS+）和非威胁性刺激干扰物（CS+）。结果表明，短潜伏期眼跳对CS+的偏离比对CS+干扰物的偏离更强烈，而长潜伏期眼跳对CS+的偏离比对CS+干扰物的偏离更强烈。此外，CS+分心捕捉的眼睛更经常比CS+分心。总之，这些结果表明，条件性恐惧对视觉选择有直接和即时的影响。这些发现被解释的情绪视觉处理的神经生物学模型。
Eye movements reflect the dynamic interplay between top-down-and bottom-up-driven processes. For example, when we voluntarily move our eyes across the visual field, salient visual stimuli in the environment may capture our attention, our eyes, or modulate the trajectory of an eye movement. Previous research has shown that the behavioral relevance of a salient stimulus modulates these processes. This study investigated whether a stimulus signaling an aversive event modulates saccadic behavior. Using a differential fear-conditioning procedure, we presented a threatening (conditional stimulus: CS+) and a nonthreatening stimulus distractor (CS+) during an oculomotor selection task. The results show that short-latency saccades deviated more strongly toward the CS+ than toward the CS+ distractor, whereas long-latency saccades deviated more strongly away from the CS+ than from the CS+ distractor. Moreover, the CS+ distractor captured the eyes more often than the CS+ distractor. Together, these results demonstrate that conditioned fear has a direct and immediate influence on visual selection. The findings are interpreted in terms of a neurobiological model of emotional visual processing.