Heightened attentional capture by threat in veterans with PTSD.
Heightened attentional capture by threat in veterans with PTSD.
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DOI：
10.1037/a0030440
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发表时间：
2013-05
影响因子：
4.6
通讯作者：
Zald, David H.
中科院分区：
文献类型：
--
作者：
Olatunji, Bunmi O.;Armstrong, Thomas;McHugo, Maureen;Zald, David H.
尽管在创伤后应激障碍(PTSD)中存在对威胁相关线索的注意偏差，但到目前为止，对这一现象的经验证明充其量也是不一致的。此外，创伤后应激障碍的这种偏见的性质还没有被清楚地描绘出来。在这项研究中，患有创伤后应激障碍的退伍军人(n=20)、创伤暴露在没有创伤后应激障碍的退伍军人(n=16)和健康的非退伍军人对照组(n=22)完成了一项情感注意眨眼任务，该任务衡量了情感刺激捕获和保持注意力的程度。参与者搜索嵌入在一系列快速呈现的图像中的目标。关键的是，与战斗有关的、厌恶的、积极的或中性的分心图像出现在目标之前200毫秒、400毫秒、600毫秒或800毫秒。与没有创伤后应激障碍的退伍军人和健康的非退伍军人对照组相比，患有创伤后应激障碍的退伍军人在目标出现前200毫秒、400毫秒或600毫秒出现与战斗相关的威胁分心因素后，观察到目标检测受损，这表明战争迹象增加了注意力捕获，并在较长一段时间内难以脱离此类线索。没有创伤后应激障碍的退伍军人和健康的非退伍军人对照组在战斗相关威胁分心物后的目标检测准确性方面没有显著差异。这些数据支持创伤后应激障碍患者存在对战斗相关刺激的注意偏差，这应该是治疗努力的重点。
Although an attentional bias for threat-relevant cues has been theorized in post-traumatic stress disorder (PTSD), to date empirical demonstration of this phenomenon has been at best inconsistent. Furthermore, the nature of this bias in PTSD has not been clearly delineated. In the present study, veterans with PTSD (n = 20), trauma exposed veterans without PTSD (n = 16), and healthy nonveteran controls (n = 22) completed an emotional attentional blink task that measures the extent to which emotional stimuli capture and hold attention. Participants searched for a target embedded within a series of rapidly presented images. Critically, a combat-related, disgust, positive, or neutral distracter image appeared 200 ms, 400 ms, 600 ms, or 800 ms before the target. Impaired target detection was observed among veterans with PTSD relative to both veterans without PTSD and healthy nonveteran controls following only combat-related threat distracters when presented 200 ms, 400 ms or 600 ms prior to the target, indicating increased attentional capture by cues of war and difficulty disengaging from such cues for an extended period. Veterans without PTSD and healthy nonveteran controls did not significantly differ from each other in target detection accuracy following combat-related threat distracters. These data support the presence of an attentional bias towards combat related stimuli in PTSD that should be a focus of treatment efforts.
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影响因子：
6.9
作者：
Blair, K. S.;Vythilingam, M.;Crowe, S. L.;McCaffrey, D. E.;Ng, P.;Wu, C. C.;Scaramozza, M.;Mondillo, K.;Pine, D. S.;Charney, D. S.;Blair, R. J. R.
通讯作者：
Blair, R. J. R.
影响因子：
12.8
作者：
Cisler, Josh M.;Wolitzky-Taylor, Kate B.;Adams, Thomas G., Jr.;Babson, Kimberly A.;Badour, Christal L.;Willems, Jeffrey L.
通讯作者：
Willems, Jeffrey L.
影响因子：
--
作者：
KESSLER, RC;SONNEGA, A;NELSON, CB
通讯作者：
NELSON, CB
影响因子：
3.3
作者：
Bryant, RA;Harvey, AG
通讯作者：
Harvey, AG
影响因子：
10.3
作者：
Felmingham, Kim L.;Rennie, Chris;Bryant, Richard A.
通讯作者：
Bryant, Richard A.