Butler R W, Braff D L, Rausch J L, Jenkins M A, Sprock J, Geyer M A
Department of Psychiatry, University of California, San Diego.
Am J Psychiatry. 1990 Oct;147(10):1308-12. doi: 10.1176/ajp.147.10.1308.
One of the diagnostic criteria for posttraumatic stress disorder (PTSD) is an exaggerated startle response; however, this phenomenon has not been verified empirically. The authors compared 20 Vietnam combat veterans with PTSD and 18 combat veterans without PTSD on the eyeblink reflex electromyographic response of the startle reaction. Subjects in both groups who failed to show an eyeblink response to the startle stimuli were eliminated from further analyses. Among the remaining subjects, the 13 with PTSD had a significantly greater startle response amplitude than the 12 control subjects at intermediate intensities of acoustic stimuli. The relationship between startle responsivity and both negative and positive symptoms was also investigated.
创伤后应激障碍（PTSD）的诊断标准之一是夸张的惊吓反应；然而，这一现象尚未得到实证验证。作者比较了20名患有PTSD的越南退伍军人和18名未患PTSD的退伍军人在惊吓反应的眨眼反射肌电图反应方面的情况。两组中对惊吓刺激未表现出眨眼反应的受试者被排除在进一步分析之外。在其余受试者中，13名患有PTSD的受试者在中等强度听觉刺激下的惊吓反应幅度明显大于12名对照受试者。同时还研究了惊吓反应性与阴性和阳性症状之间的关系。
