Previous research has suggested that exposure to potentially traumatic events can lead to increased perceptual processing specific to trauma-related stimuli. Moreover, conceptual processing strategies during encoding may reduce the effect of trauma exposure on perceptual processing. The current study investigated the effect of a trauma film on perceptual processing with visual evoked potentials. Participants were primed with perceptual or conceptual processing strategies, then viewed a trauma film and a control film. Participants then looked at emotionally negative and neutral images that were related or unrelated to the films. The amplitude of the P1 evoked potential was measured during image presentation. P1 amplitude was more positive specifically for negative film-related stimuli. Moreover, this effect was stronger in participants primed with perceptual processing. These results suggest that potentially traumatic events increase perceptual processing specifically for trauma-related stimuli, and that conceptual encoding strategies attenuate the effect of exposure to potentially traumatic events on perception.

先前的研究表明，暴露于潜在的创伤事件会导致特定于创伤相关刺激的感知处理增加。此外，编码过程中的概念处理策略可能会减少创伤暴露对知觉处理的影响。目前的研究调查了创伤电影对视觉诱发电位知觉加工的影响。参与者以感知或概念处理策略为基础，然后观看创伤电影和控制电影。然后，参与者查看与电影相关或无关的情绪消极和中性图像。在图像呈现期间测量 P1 诱发电位的幅度。P1 振幅更积极，特别是对于负片相关刺激。而且，这种效果在具有感知加工能力的参与者中更为明显。这些结果表明，潜在的创伤性事件增加了专门针对创伤相关刺激的知觉处理，并且概念编码策略减弱了暴露于潜在创伤性事件对知觉的影响。