Abstract
A MONOSYNAPTIC reflex can frequently be evoked in the calf muscles on electrical stimulation of the tibial nerve (H-reflex) at a stimulus intensity below threshold for the motor fibres. A centripetal nerve volley can sometimes be recorded below threshold for the α-motor fibres on stimulation of various peripheral nerves in the upper and lower extremity1,2, in the distribution of which an H-reflex is an unusual occurrence. Yet Magladery et al.3, recording from the spinal roots with intrathecal electrodes, found, on stimulation of the tibial nerve, that an afferent volley did not occur until after the reflex volley had developed. One purpose of the work reported here was to investigate the relationship between centripetal nerve volleys and the threshold for the monosynaptic reflex in the calf muscles.
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GASSEL, M., DIAMANTOPOULOS, E. Nerve Potential Recordings during electrically and mechanically evoked Monosynaptic Reflexes in Man. Nature 208, 1004–1005 (1965). https://doi.org/10.1038/2081004a0
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DOI: https://doi.org/10.1038/2081004a0
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