Startle Reactivity and Peritraumatic Dissociations in Acute Stress Disorder
Startle Reactivity and Peritraumatic Dissociations in Acute Stress Disorder
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DOI：
10.1027/0269-8803.22.4.185
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发表时间：
2008-01-01
影响因子：
1.3
通讯作者：
Sartory, Gudrun
中科院分区：
文献类型：
--
作者：
Elsesser, Karin;Freyth, Claudia;Sartory, Gudrun
对急性应激障碍（ASD）患者的惊吓反应及其与分离症状的关系进行了评估。肌电图（EMG）反应，心率反应（HRR），皮肤电反应（SCR）惊吓刺激的受害者之间的混合创伤事件（n = 31）和健康对照组无创伤暴露（n = 20）进行了比较。所有ASD患者均符合急性应激障碍的标准（尽管其中12例未表现出所需数量的分离症状）。与对照组相比，ASD患者表现出增加的HRR和较慢的习惯化，以及增加的SCR的惊吓刺激。在EMG反应方面没有显著的组间差异。在ASD患者中，报告的创伤周围分离的强度与较低的EMG惊吓幅度和更快的EMG习惯化有关，这表明分离症状的保护机制可能在唤醒情况和刺激下生效。
Startle reactions and their relationship to dissociative symptoms were assessed in acute stress disorder (ASD) patients. Electromyographic (EMG) responses, heart-rate reactions (HRR), and skin conductance responses (SCR) to startle stimuli were compared between victims of mixed traumatic events (n = 31) and healthy controls without trauma exposure (n = 20). All ASD patients met criteria for acute stress disorder (although 12 of them did not demonstrate the required number of dissociative symptoms). Compared to controls, ASD patients showed increased HRR and slower habituation, as well as increased SCRs to the startle stimuli. There were no significant group differences in relation to EMG responses. In ASD patients, reported intensity of peritraumatic dissociations was related to lower EMG startle magnitude and more rapid EMG habituation, suggesting a protective mechanism of dissociative symptoms that may come into effect in response to arousing situations and stimuli.