MEASURING THE TIME-COURSE OF ANTICIPATORY ANXIETY USING THE FEAR-POTENTIATED STARTLE REFLEX
MEASURING THE TIME-COURSE OF ANTICIPATORY ANXIETY USING THE FEAR-POTENTIATED STARTLE REFLEX
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DOI：
10.1111/j.1469-8986.1993.tb02055.x
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发表时间：
1993-07-01
期刊：
影响因子：
3.7
通讯作者：
DAVIS, M
中科院分区：
文献类型：
--
作者：
GRILLON, C;AMELI, R;DAVIS, M
对20名正常受试者进行了电击预期诱发声惊反射促进的时间过程测量。电击可以在45秒威胁条件的最后10秒进行，但不能在50秒无威胁条件下进行，每种情况都用不同的光表示。与之前的数据一致，在受到威胁的情况下，眨眼的惊吓程度总体上高于没有受到威胁的情况。然而，在威胁条件下，这种恐惧增强的惊吓效应的强度随着灯打开的时间越长而逐渐增大，然后随着灯发出的信号在无威胁条件下突然减小。这些休克威胁对惊吓的影响被解释为预期焦虑。其他解释，如选择性或广义注意的变化，也进行了讨论。这种范式提供了一种评估人类预期性焦虑的时间过程的方法。
The time course of the facilitation of the acoustic startle reflex induced by anticipation of electric shocks was measured in 20 normal volunteers. Shocks could be administered during the last 10 s of 45-s threat conditions but not during 50-s no-threat conditions, each condition being signaled by a different light. Consistent with previous data, overall eyeblink startle levels were higher during the threat than during the no-threat conditions. However, the magnitude of this fear-potentiated startle effect became progressively larger in the threat condition the longer the light was on and then abruptly decreased with the onset of the light signaling the no-threat condition. These effects of the threat of shock on startle were interpreted in terms of anticipatory anxiety. Other interpretations, such as changes in selective or generalized attention, were also discussed. This paradigm provides a method to assess the time course of anticipatory anxiety in humans.