Motoneuron response to dorsal root stimulation in anesthetized monkeys after spinal cord transection.

TitleMotoneuron response to dorsal root stimulation in anesthetized monkeys after spinal cord transection.
Publication TypeJournal Article
Year of Publication1987
AuthorsWolpaw, J, Lee, CL
JournalExperimental brain research. Experimentelle Hirnforschung. Expérimentation cérébrale
Volume68
Pagination428–433
Date Published10/1987
ISSN0014-4819
Keywordsmonosynaptic reflex, primate, Spinal Cord, spinal cord injury, spinal reflex, spinal shock
Abstract

In preparation for studying the spinal cord alterations produced by operant conditioning of spinal reflexes, we studied peripheral nerve responses to supramaximal dorsal root stimulation in the lumbosacral cord of deeply anesthetized monkeys before and after thoracic cord transection. Except for variable depression in the first few minutes, reflex responses were not reduced or otherwise significantly affected by transection in the hour immediately following the lesion or for at least 50 h. The results suggest that reduction in muscle spindle sensitivity and/or in polysynaptic motoneuron excitation contributes to stretch reflex depression after cord transection.

URLhttp://www.ncbi.nlm.nih.gov/pubmed/3480233
DOI10.1007/BF00248809

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