Response intensity in content-specific fear conditioning comparing 20% versus 13% CO2-enriched air as unconditioned stimuli
Response intensity in content-specific fear conditioning comparing 20% versus 13% CO2-enriched air as unconditioned stimuli
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DOI：
10.1037/0021-843x.107.2.291
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发表时间：
1998-05-01
影响因子：
4.6
通讯作者：
Eifert, GH
中科院分区：
文献类型：
--
作者：
Forsyth, JP;Eifert, GH
本研究探讨了COP诱发的心理生理反应强度与内容特异性恐惧条件反射之间的关系。性别平衡组的大学生（N = 96）被分配到3个条件刺激（CS）不同的恐惧相关性，并在每个CS，无论是20%或13%的二氧化碳富集空气（无条件刺激[UCS]）。几个心理生理措施进行了评估之前，期间和之后的条件反射阶段。与预期一致，皮肤电和心脏条件反射更大，更耐灭绝时，与恐惧相关的恐惧无关的刺激相比，恐惧相关性的整体效果更强大的更强烈的UCS。DSM-IV（精神疾病诊断和统计手册，第4版）的严重程度和频率恐慌症状也随着UCS强度的变化而变化，女性比男性报告更多的痛苦和症状。总的来说，研究结果表明，特定内容的恐惧条件反射是介导的，在一定程度上，由身体反应的强度。作者讨论了在没有明显的环境疼痛或创伤的情况下理解恐惧发作的临床和理论意义。
This study examined the relation between the intensity of COP-induced psychophysiological responses and content-specific fear conditioning. Sex-balanced groups of undergraduates (N = 96) were assigned to 1 of 3 conditioned stimuli (CSs) differing in fear-relevance, and within each CS, to either 20% or 13% CO2-enriched air (unconditioned stimuli [UCS]). Several psychophysiological measures were assessed before, during, and following conditioning phases. Consistent with expectation, electrodermal and cardiac conditioned responses were larger and more resistant to extinction when associated with fear-relevant compared with fear-irrelevant stimuli, and this overall effect of fear-relevance was more robust to the more intense UCS. Severity and frequency of DSM-IV (Diagnostic and Statistical Manual of Mental Disorders, 4th ed.) panic symptoms also varied reliably with UCS intensity, and women reported more distress and symptoms than men. Overall, the findings suggest that content-specific fear conditioning is mediated, in part, by the intensity of the bodily response. The authors discuss clinical and theoretical implications for understanding fear onset in the absence of obvious environmental pain or trauma.