6533b85dfe1ef96bd12bdfa2

RESEARCH PRODUCT

Bilateral reciprocal organisation in man: focus on IA interneurone

G. CaravagliosPierangelo SardoGiuseppe FerraroV. La GruttaM. Sabatino

subject

AdultStimulationFunctional LateralityH-ReflexInterneuronsmedicineHumansMuscle SpindlesBiological PsychiatryRadial nerveMotor NeuronsAfferent Pathwaysbusiness.industryReciprocal inhibitionExtremitiesAnatomymusculoskeletal systemSpinal cordMedian nerveMedian NervePsychiatry and Mental healthElectrophysiologymedicine.anatomical_structureNeurologyUpper limbRadial NerveNeurology (clinical)H-reflexbusiness

description

The H reflex of flexor carpi radialis and radial-induced reciprocal inhibition were recorded in normal subjects during conditioning stimulation of the contralateral median or radial nerves. It was found that stimulation of the contralateral median nerve enhanced the degree of reciprocal inhibition exerted by the radial nerve on the median nerve, while contralateral radial nerve stimulation reduced the reciprocal inhibition exerted by the extensor on the flexor. In two subjects in which a pure extensor H reflex was recorded specular features were observed following contralateral median and radial stimulation. These findings are considered to be the electrophysiological manifestation of contralateral modulation of reciprocal inhibition, which is likely to act at the level of the IA interneurone.

https://doi.org/10.1007/bf01277926