Impact of Trauma Type on Startle Reactivity to Predictable and Unpredictable Threats.
Impact of Trauma Type on Startle Reactivity to Predictable and Unpredictable Threats.
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DOI：
10.1097/nmd.0000000000001394
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发表时间：
2021-12-01
期刊：
影响因子：
--
通讯作者：
Gorka SM
中科院分区：
文献类型：
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作者：
Kreutzer KA;Gorka SM
创伤暴露已被反复联系到心理生理威胁反应，虽然这种关联的方向一直不一致。有几个因素可能导致不一致的结果，包括创伤类型和威胁模式。因此，本研究探讨了创伤类型的心理生理反应的影响，可预测的（P-）和不可预测的（U-）的威胁，在年轻的成年人（N=112）。参与者被分为三组：人际或非人际创伤史，或没有创伤史。惊吓眨眼增强记录在一个行之有效的威胁的休克范例。结果表明，与其他两组相比，人际创伤暴露的人对U-威胁（仅）表现出夸大的惊吓反应。相反，与其他两组相比，非人际创伤的个体对U-威胁（仅）表现出迟钝的惊吓反应。研究结果表明，创伤和威胁类型的影响威胁的反应性和那些有历史的人际创伤可能会独特地显示夸大的敏感性是不确定的压力。
Trauma exposure has been repeatedly linked to psychophysiological threat reactivity; though the directionality of this association has been inconsistent. Several factors likely contribute to inconsistent findings including type of trauma and threat paradigm. The present study therefore examined the impact of trauma type on psychophysiological reactivity to predictable (P-) and unpredictable (U-) threat in young adults (N=112). Participants were classified into three groups: history of interpersonal or non-interpersonal trauma, or no history of trauma. Startle eyeblink potentiation was recorded during a well-validated threat-of-shock paradigm. Results indicated individuals with interpersonal trauma exposure displayed exaggerated startle reactivity to U-threat (only) compared with both other groups. In contrast, individuals with non-interpersonal trauma exhibited blunted startle reactivity to U-threat (only) compared with both other groups. Findings reveal that trauma and threat type influence threat reactivity and that those with a history of interpersonal trauma may uniquely display exaggerated sensitivity to stressors that are uncertain.