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Recovery of somatosensory evoked potential amplitude after movement
Author(s) -
Angel R. W.,
Weinrich M.,
Rodnitzky R.
Publication year - 1986
Publication title -
annals of neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.764
H-Index - 296
eISSN - 1531-8249
pISSN - 0364-5134
DOI - 10.1002/ana.410190406
Subject(s) - somatosensory evoked potential , somatosensory system , movement (music) , thumb , sensory system , index finger , audiology , psychology , neuroscience , physical medicine and rehabilitation , medicine , anatomy , physics , acoustics
Sensory transmission is know to be impaired during movement of the stimulated body part. The goal of this study was to determine whether sensory gating persists for a measurable time after completion of a voluntary movement. Tactile stimuli were applied to the right index fingertip at intervals ranging from 63 to 1,000 msec after the completion of rapid thumb movement. Somatosensory evoked potentials (SEPs), recorded over the left cerebral hemisphere, were found to be reduced in size for at least 500 msec after the cessation of movement. The prolonged attenuation of SEPs after movement appears to depend on a central process that persists for a measurable time after the movement has ended.