Auditory startle reflex inhibited by preceding self-action
Auditory startle reflex inhibited by preceding self-action
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先前的自我行动抑制听觉惊吓反射
DOI：
10.1111/psyp.12150
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发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
Jiro Gyoba.
中科院分区：
文献类型：
--
作者：
Yousuke Kawachi;Yoshihiko Matsue;Michiaki Shibata;Osamu Imaizumi;Jiro Gyoba.
在受到前刺激的情况下，对惊吓脉冲的惊恐反射被抑制。我们引入了按键动作(自我动作)或85 分贝噪声脉冲串作为前刺激，然后引入115 分贝噪声脉冲串作为惊吓脉冲。我们操纵前刺激和惊吓脉冲之间的时间偏移量，从30-1,500 ms来检查自我行为是否调制惊吓反射和调制效应的时间特性。我们通过肌电图仪评估了眨眼反射。与单独脉冲试验相比，两种预刺激试验都降低了反射。此外，不同类型的前刺激的抑制时间窗是不同的。在自我行为实验中，更快的最大抑制和更窄的时间窗口表明，之前的自我行为抑制了惊吓反射，并允许以不同于听觉前刺激的方式预测即将到来的脉冲。
A startle reflex to a startle pulse is inhibited when preceded by a prestimulus. We introduced a key‐press action (self‐action) or an 85 dB noise burst as a prestimulus, followed by a 115 dB noise burst as a startle pulse. We manipulated temporal offsets between the prestimulus and the startle pulse from 30–1,500 ms to examine whether self‐action modulates the startle reflex and the temporal properties of the modulatory effect. We assessed eyeblink reflexes by electromyography. Both prestimuli decreased reflexes compared to pulse‐alone trials. Moreover, the temporal windows of inhibition were different between the types of prestimuli. A faster maximal inhibition and narrower temporal window in self‐action trials suggest that preceding self‐action inhibits the startle reflex and allows prediction of the coming pulse in different ways from auditory prestimuli.