Document Detail

Facilitation and inhibition of the human startle blink reflexes by stimulus anticipation.
MedLine Citation:
PMID:  2354037     Owner:  NLM     Status:  MEDLINE    
The cutaneous eyeblink has 2 electromyographic components, 1 unilateral and early (R1) and 1 bilateral and late (R2), which are served by different neural pathways. These 2 reactions were measured when the eliciting stimulus was expected or relatively surprising. Forewarning was varied in 3 ways: Subjects received notice that the stimulus was about to occur on some trials (Experiment 1); delivered the stimulus to themselves on some trials (Experiments 2 & 3); or experienced a series of trials in which a tone was paired with the eliciting stimulus, followed by tone-alone trials interspersed with test trials (Experiment 4). In each case, forewarning enhanced R1 amplitudes while depressing R2 but reduced the latency of both components. This mixed pattern of effects reveals that the preparatory state provoked by forewarning focuses excitatory and inhibitory processes simultaneously on different reflex pathways: inhibition central and excitation peripheral.
J R Ison; J N Sanes; J A Foss; L A Pinckney
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Behavioral neuroscience     Volume:  104     ISSN:  0735-7044     ISO Abbreviation:  Behav. Neurosci.     Publication Date:  1990 Jun 
Date Detail:
Created Date:  1990-07-24     Completed Date:  1990-07-24     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  8302411     Medline TA:  Behav Neurosci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  418-29     Citation Subset:  IM    
Department of Psychology, University of Rochester, New York 14627.
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MeSH Terms
Arousal / physiology*
Attention / physiology
Blinking / physiology*
Conditioning, Eyelid / physiology
Dominance, Cerebral / physiology
Evoked Potentials / physiology
Extinction, Psychological / physiology
Facial Nerve / physiology
Medulla Oblongata / physiology
Neural Inhibition / physiology*
Pons / physiology
Reaction Time / physiology
Set (Psychology)*
Startle Reaction / physiology*
Synapses / physiology
Trigeminal Nerve / physiology
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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