Traumatic Exposure, PTSD and Physiological Reactivity

描述(由申请人提供)：拟议的研究将检查不同程度的潜在创伤暴露于机动车辆事故(MVA)和相关压力的个人的情绪反应。这一建议的动机是情绪失调和生理症状(即，对创伤的生理高反应性、紧张的线索、夸张的惊吓)在诊断病因学中的突出地位，作为创伤后表现的特征成分。这项研究的具体目标是方法论和概念性的。使用参数操作将允许检查有和没有创伤后应激障碍症状的创伤性暴露的个体之间关于情绪调节的具体假设。自我报告和生理反应将在两个实验室范例中进行测量；一个是叙事表象任务，一个是看图任务，因此可以比较这两个不同任务和刺激在激发情绪反应方面的效用。

DESCRIPTION (provided by applicant): The proposed research will examine emotional reactivity among individuals with varying levels of potentially traumatic exposure to motor vehicle accidents (MVAs) and associated stress. This proposal was motivated by the prominence in the diagnostic nosology of emotional dysregulation and physiological symptoms (i.e., physiological hyper-reactivity to traumarelevant cues, exaggerated startle) as hallmark components of the posttraumatic presentation. The specific goals of this research are both methodological and conceptual. Employing parametric manipulations will allow examination of specific hypotheses regarding emotional modulation among individuals with traumatic exposure with and without PTSD symptoms. Self-report and physiological responses will be measured during two laboratory paradigms; a narrative imagery task and a picture-viewing task, thereby allowing comparison of the utility of the two different tasks and stimuli in eliciting emotional reactivity in this sample.