Psychophysiological Response to Virtual Reality and Subthreshold Posttraumatic Stress Disorder Symptoms in Recently Deployed Military
Psychophysiological Response to Virtual Reality and Subthreshold Posttraumatic Stress Disorder Symptoms in Recently Deployed Military
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DOI：
10.1097/psy.0000000000000109
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发表时间：
2014-11-01
影响因子：
3.3
通讯作者：
Roy, Michael J.
中科院分区：
文献类型：
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作者：
Costanzo, Michelle E.;Leaman, Suzanne;Roy, Michael J.
阈值以下创伤后应激障碍(PTSD)由于与症状相关的严重的痛苦和功能损害以及进展为完全PTSD的风险增加而受到最近的关注。然而，阈值下创伤后应激障碍的临床表现差异很大，因此没有明确的定义，也没有循证治疗方法。因此，我们的目标是通过报告使用虚拟战斗环境在最近部署的阈值以下美国军人中引发与创伤后应激障碍症状相关的独特心理生理反应，来进一步了解阈值下创伤后应激障碍症状。方法：在三种独特的战斗虚拟现实场景中监测心率、皮肤电导、肌电图(惊吓)、呼吸频率和血压，作为一种新的方法来评估78名服役人员的阈值下症状。采用临床医生使用的创伤后应激障碍量表，并用线性回归分析研究症状群与生理变量之间的关系。结果：在所研究的一系列心理生理指标中，回归分析显示心率与临床医生实施的基于创伤后应激障碍量表的措施高度唤醒(R-2=0.11，p=.035)、重新体验(R-2=0.24，p=.001)和总体创伤后应激障碍症状(R-2=0.17，p=.003)的相关性最强。结论：我们的研究结果支持使用虚拟现实环境来引发与阈值下PTSD症状相关的生理反应。
Subthreshold posttraumatic stress disorder (PTSD) has garnered recent attention because of the significant distress and functional impairment associated with the symptoms as well as the increased risk of progression to full PTSD. However, the clinical presentation of subthreshold PTSD can vary widely and therefore is not clearly defined, nor is there an evidence-based treatment approach. Thus, we aim to further the understanding of subthreshold PTSD symptoms by reporting the use of a virtual combat environment in eliciting distinctive psychophysiological responses associated with PTSD symptoms in a sample of subthreshold recently deployed US service members. Methods: Heart rate, skin conductance, electromyography (startle), respiratory rate, and blood pressure were monitored during three unique combat-related virtual reality scenarios as a novel procedure to assess subthreshold symptoms in a sample of 78 service members. The Clinician-Administered PTSD Scale was administered, and linear regression analyses were used to investigate the relationship between symptom clusters and physiological variables. Results: Among the range of psychophysiological measures that were studied, regression analysis revealed heart rate as most strongly associated with Clinician-Administered PTSD Scale-based measures hyperarousal (R-2 = 0.11, p = .035,) reexperiencing (R-2 = 0.24, p = .001), and global PTSD symptoms (R-2 = 0.17, p = .003). Conclusions: Our findings support the use of a virtual reality environment in eliciting physiological responses associated with subthreshold PTSD symptoms.