Auditory startle reflex inhibited by preceding self-action

Yousuke Kawachi, Yoshihiko Matsue, Michiaki Shibata, Osamu Imaizumi, Jiro Gyoba

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)

    Abstract

    A startle reflex to a startle pulse is inhibited when preceded by a prestimulus. We introduced a key-press action (self-action) or an 85dB noise burst as a prestimulus, followed by a 115dB noise burst as a startle pulse. We manipulated temporal offsets between the prestimulus and the startle pulse from 30-1,500ms 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.

    Original languageEnglish
    Pages (from-to)97-102
    Number of pages6
    JournalPsychophysiology
    Volume51
    Issue number1
    DOIs
    Publication statusPublished - 2014 Jan

    Keywords

    • Prepulse inhibition
    • Self-action
    • Temporal window

    ASJC Scopus subject areas

    • Neuroscience(all)
    • Neuropsychology and Physiological Psychology
    • Experimental and Cognitive Psychology
    • Neurology
    • Endocrine and Autonomic Systems
    • Developmental Neuroscience
    • Cognitive Neuroscience
    • Biological Psychiatry

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