Anger and aggression problems in veterans are associated with an increased acoustic startle reflex
Anger and aggression problems in veterans are associated with an increased acoustic startle reflex
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DOI：
10.1016/j.biopsycho.2016.12.004
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发表时间：
2017-02-01
影响因子：
2.6
通讯作者：
Geuze, Elbert
中科院分区：
文献类型：
--
作者：
Heesink, Lieke;Kleber, Rolf;Geuze, Elbert
愤怒和侵略是部署的军事人员经常遇到的问题。对威胁的感知和反应阈值降低会引发冲动性攻击。这可以通过夸张的惊吓反应来表现。对52名有愤怒和攻击问题的退伍军人（愤怒组）和50名对照退伍军人进行了惊吓实验，其中包括10个惊吓探针和10个脉冲前试验，试验顺序随机，试验之间随机间隔。测试了愤怒组惊吓反应的预测因子（人口统计学、特质愤怒、状态愤怒、伤害避免和焦虑唤醒）。与对照组相比，愤怒组对惊吓探针的肌电图反应增加，但与脉冲前试验相比没有增加。此外，伤害回避和状态愤怒预测了愤怒组惊吓反射的增加，而特质性愤怒与惊吓反射呈负相关。这些发现表明，在愤怒和攻击性问题中，威胁反应会增加。这些问题不仅是由焦虑倾向引起的，愤怒的程度也预示着惊吓反射。(C) 2016 Elsevier B.V.版权所有
Anger and aggression are frequent problems in deployed military personnel. A lowered threshold of perceiving and responding to threat can trigger impulsive aggression. This can be indicated by an exaggerated startle response. Fifty-two veterans with anger and aggression problems (Anger group) and 50 control veterans were tested using a startle experiment with 10 startle probes and 10 prepulse trials, presented in a random order and with a random interval between the trials. Predictors (demographics, Trait Anger, State Anger, Harm Avoidance and Anxious Arousal) for the startle response within the Anger group were tested. Increased EMG responses were found to the startle probes in the Anger Group compared to the Control group, but not to the prepulse trials. Furthermore, Harm Avoidance and State Anger predicted the increased startle reflex within the Anger group, whereas Trait Anger was negatively related to the startle reflex. These findings indicate that threat reactivity is increased in anger and aggression problems. These problems are not only caused by an anxious predisposition, the degree of anger also predicts the startle reflex. (C) 2016 Elsevier B.V. All rights reserved.