Association of Predeployment Gaze Bias for Emotion Stimuli With Later Symptoms of PTSD and Depression in Soldiers Deployed in Iraq
Association of Predeployment Gaze Bias for Emotion Stimuli With Later Symptoms of PTSD and Depression in Soldiers Deployed in Iraq
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DOI：
10.1176/appi.ajp.2011.10091309
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发表时间：
2011-07-01
影响因子：
17.7
通讯作者：
Telch, Michael J.
中科院分区：
文献类型：
--
作者：
Beevers, Christopher G.;Lee, Han-Joo;Telch, Michael J.
目的：情绪刺激的偏向处理被认为是精神病理学的易感性，但很少有关于这种联系的纵向研究。作者考察了部署到伊拉克的士兵在部署前对情绪刺激的凝视偏差与创伤后应激障碍(PTSD)和抑郁症状的关系。方法：使用眼动跟踪范式评估139名士兵在被部署到伊拉克之前观看由恐惧、悲伤、快乐和中性表情组成的2乘2矩阵时的凝视线。结果：战区应激暴露对创伤后应激障碍和抑郁症状有较高的预测作用，但眼神偏向对这种关系有一定的调节作用。在有战区应激暴露的士兵中，看到恐惧面孔时的平均注视时间越短，PTSD症状得分越高，而悲伤面孔的总注视时间和平均注视时间越长，抑郁症状得分越高。结论：以凝视偏差衡量的情绪刺激偏向加工似乎使经历战区应激的士兵更容易出现创伤后应激障碍和抑郁症状。
Objective: Biased processing of emotion stimuli is thought to confer vulnerability to psychopathology, but few longitudinal studies of this link have been conducted. The authors examined the relationship between predeployment gaze bias for emotion stimuli and later symptoms of posttraumatic stress disorder (PTSD) and depression in soldiers deployed to Iraq.Method: An eye-tracking paradigm was used to assess line of gaze in 139 soldiers while they viewed a two-by-two matrix of fearful, sad, happy, and neutral facial expressions before they were deployed to Iraq. Once they were deployed, the soldiers periodically reported on their levels of war zone stress exposure and symptoms of PTSD and depression.Results: War zone stress exposure predicted higher scores on PTSD and depression symptom measures; however, eye gaze bias moderated this relationship. In soldiers with war zone stress exposure, shorter mean fixation time when viewing fearful faces predicted higher PTSD symptom scores, and greater total fixation time and longer mean fixation time for sad faces predicted higher depressive symptom scores.Conclusions: Biased processing of emotion stimuli, as measured by gaze bias, appears to confer vulnerability to symptoms of PTSD and depression in soldiers who experience war zone stress.