Context-specific freezing and associated physiological reactivity as a dysregulated fear response
Context-specific freezing and associated physiological reactivity as a dysregulated fear response
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DOI：
10.1037/0012-1649.40.4.583
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发表时间：
2004-07-01
影响因子：
4
通讯作者：
Goldsmith, HH
中科院分区：
文献类型：
--
作者：
Buss, KA;Davidson, RJ;Goldsmith, HH
恐惧相关行为与外周交感神经和神经内分泌反应之间的假定关联尚未得到一致的复制。这种不一致性是解决在一个重新审视的儿童与极端恐惧反应的特点，专注于痛苦行为和引发的背景之间的匹配。80名24个月大的儿童在4种轻度威胁的情况下进行了观察，并检查了不同的恐惧相关行为，反应性和基础皮质醇水平，以及心率，呼吸性窦性心律失常和射血前期（PEP）的基线心脏指标之间的关系。只有在威胁性较小的情况下的行为将与较高的皮质醇和交感神经心脏活动的假设得到证实，只有特定任务的冻结行为预测较高的反应性和基础皮质醇水平和静息PEP测量I周后。异常的恐惧行为的概念化的分类非常可怕的儿童的影响进行了讨论。
The putative association between fear-related behaviors and peripheral sympathetic and neuroendocrine reactivity has not been replicated consistently. This inconsistency was addressed in a reexamination of the characterization of children with extreme fearful reactions by focusing on the match between distress behaviors and the eliciting context. Eighty 24-month-old children were observed in 4 mildly threatening contexts, and the relations among different measures of fear-related behaviors, reactive and basal cortisol levels, and baseline cardiac measures of heart rate, respiratory sinus arrhythmia, and preejection period (PEP) were examined. The hypothesis that only behaviors under the less threatening context would be associated with higher cortisol and sympathetic cardiac activity was confirmed; only task-specific freezing behavior predicted higher reactive and basal cortisol levels and resting PEP measured I week later. Implications for the conceptualization of dysregulated fear behaviors in the classification of extremely fearful children are discussed.