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Supernormal excitability of human sensory fibers after ischemia
Author(s) -
Stöhr M.,
Gilliatt R. W.,
Willison R. G.
Publication year - 1981
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.880040113
Subject(s) - stimulus (psychology) , sensory system , neuroscience , conditioning , electrophysiology , medicine , ischemia , anatomy , anesthesia , psychology , cardiology , statistics , mathematics , psychotherapist
Weak electrical stimuli were applied to sensory fibers of the median nerve at the wrist, and the ascending action potentials were recorded at the elbow. This was done with or without a preceding conditioning stimulus to test for supernormal excitability to the second stimulus. In the resting nerve, supernormal excitability was present from 3 to 20 msec after a conditioning shock. After a period of ischemia, excitability was both exaggerated and prolonged. this observation confirms the presence in sensory fibers of a phenomenon previously described in motor fibers.