Eye tracking and visual attention to threating stimuli in veterans of the Iraq war
Eye tracking and visual attention to threating stimuli in veterans of the Iraq war
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DOI：
10.1016/j.janxdis.2009.12.006
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发表时间：
2010-04-01
影响因子：
10.3
通讯作者：
Zambetti, Andrea
中科院分区：
文献类型：
--
作者：
Kimble, Matthew O.;Fleming, Kevin;Zambetti, Andrea
PTSD患者的注意力的理论和临床特征都承认过度警惕和逃避创伤相关刺激的可能性。本研究采用眼动追踪技术研究了19名伊拉克战争退伍军人的视觉定向和对创伤性和中性刺激的注意。退伍军人观看的幻灯片中，一半屏幕上有负面评价的图像，另一半屏幕上有中性评价的图像。负效刺激进一步分为创伤相关性不同的刺激（伊拉克战争或民用机动车事故）。与PTSD症状较轻的退伍军人相比，报告PTSD症状相对较高的退伍军人对所有负面评价图片的瞳孔更大，并且花更多的时间看这些图片。创伤后应激障碍症状较高的退伍军人也表现出首先看伊拉克照片的趋势。研究结果表明，当视觉处理负面价值和创伤相关刺激时，创伤后病理与警惕而不是逃避有关。(C) 2010 Elsevier Ltd.版权所有。
Theoretical and clinical characterizations of attention in PTSD acknowledge the possibility for both hypervigilance and avoidance of trauma-relevant stimuli. This study used eye tracking technology to investigate visual orientation and attention to traumatic and neutral stimuli in nineteen veterans of the Iraq war. Veterans saw slides in which half the screen had a negatively valenced image and half had a neutral image. Negatively valenced stimuli were further divided into stimuli that varied in trauma relevance (either Iraq war or civilian motor vehicle accidents). Veterans reporting relatively higher levels of PSTD symptoms had larger pupils to all negatively valenced pictures and spent more time looking at them than did veterans lower in PTSD symptoms. Veterans higher in PTSD symptoms also showed a trend towards looking first at Iraq images. The findings suggest that post-traumatic pathology is associated with vigilance rather than avoidance when visually processing negatively valenced and trauma-relevant stimuli. (C) 2010 Elsevier Ltd. All rights reserved.