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性暴露于机动车事故（MVAs）和相关压力的个体的情绪反应。这一建议的动机是，在诊断分类学中，情绪失调和生理症状（即，对创伤相关线索的生理过度反应，夸张的惊吓）是创伤后表现的标志性组成部分。这项研究的具体目标是方法论和概念性的。采用参数操作将允许检查特定的假设情绪调节的个体创伤暴露有或没有创伤后应激障碍症状。自我报告和生理反应将在两个实验范式中测量；一个叙事意象任务和一个图片观看任务，从而可以比较两种不同任务和刺激在引发本样本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.