Startle potentiation during anticipation of a noxious stimulus: active versus passive response sets.
Startle potentiation during anticipation of a noxious stimulus: active versus passive response sets.
复制标题
预期有害刺激期间的惊吓增强：主动与被动反应组。
DOI：
10.1111/j.1469-8986.1995.tb03408.x
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发表时间：
1995
期刊：
影响因子：
3.7
通讯作者：
Berthot,BD
中科院分区：
文献类型：
--
作者：
Patrick,CJ;Berthot,BD
惊吓反射反应在厌恶刺激处理过程中增加。本研究探讨是否不同的反应集影响惊吓增强预期的厌恶事件。两组在6秒的警告提示后接受有害噪音冲击波。主动组的受试者可以按下一个开关来停止噪音;被动组的受试者接受同样的噪音，没有控制。受试者在控制组听到一个柔和的音调后，线索偏移。在一些警告期间和一些试验间隔期间，提出了声学惊吓探头。主要的发现是，主动和被动组没有不同的惊吓增强。与对照组相比，两组的惊吓反应在警告提示期间比试验之间更大，更快。结果表明，惊吓反射指标的防御反应动员独立的具体任务的要求。
The startle reflex response increases during aversive stimulus processing. This study examined whether differing response sets affected startle potentiation during anticipation of an aversive event. Two groups received a noxious noise blast following a 6‐s warning cue. Subjects in the active group could press a switch to stop the noise; yoked passive subjects received the same noises with no control. Subjects in a yoked control group heard a soft tone following cue offset. Acoustic startle probes were presented during some of the warning periods and during some of the intertrial intervals. The major finding was that the active and passive groups did not differ in startle potentiation. In comparison with controls, startle reactions for both groups were larger and faster during the warning cue than between trials. The results suggest that the startle reflex indexes defensive response mobilization independently of specific task demands.