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首页> 外文期刊>International journal of psychophysiology: official journal of the International Organization of Psychophysiology >Relationship of prepulse inhibition of the startle reflex to attentional and executive mechanisms in man.
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Relationship of prepulse inhibition of the startle reflex to attentional and executive mechanisms in man.

机译：惊吓反射的脉冲前抑制与人的注意力和执行机制的关系。

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摘要

Prepulse inhibition (PPI) of the startle reflex at short lead intervals is thought to reflect the operation of a preattentive "sensorimotor gating" mechanism, which suggests that processing of the prepulse stimulus should not be modulated prior to its inhibitory effects on startle. To test this hypothesis, we examined whether PPI is affected following habituation to the prepulse. PPI was measured in two sessions associated with either the presence (habituation condition) or the absence (control condition) of prepulse repetition. There was a trend for prepulse repetition to reduce the effectiveness of that prepulse in inhibiting the startle response. We also explored the relationship of PPI to scores in tests of selective and sustained attention and planning ability. Overall PPI performance was correlated to performance indices of planning ability and there was a trend level correlation with scores in selective but not sustained attention tests. These preliminary results merit further investigation.
机译：人们认为，在短的引导间隔内对惊吓反射的预脉冲抑制（PPI）反映了注意力集中的“感觉运动门控”机制的运行，这表明在对惊吓的抑制作用发生之前，不应调节对预脉冲刺激的处理。为了验证该假设，我们检查了习惯于预脉冲后PPI是否受到影响。在与前脉冲重复的存在（适应条件）或不存在（对照条件）相关的两个会话中测量PPI。前冲重复的趋势是降低该前冲抑制惊吓反应的有效性。我们还探讨了选择性，持续性注意力和计划能力测试中PPI与分数之间的关系。 PPI的总体绩效与计划能力的绩效指标相关，并且在选择性但非持续性注意力测试中，其得分与趋势水平相关。这些初步结果值得进一步调查。

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