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Muscle recruitment by intramuscular vs. nerve cuff electrical stimulation

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3 Author(s)
Singh, K. ; MRC Group in Sensorimotor Neurosci., Queen''s Univ., Kingston, Ont., Canada ; Richmond, F.J.R. ; Loeb, G.E.

Functionally useful reanimation of paralyzed limbs depends on achieving reliable fine-control of muscle recruitment and force. We have used force and EMG recordings and histochemical analysis to investigate the recruitment properties of intramuscular (IM) and nerve cuff (NC) electrodes implanted acutely or chronically in cat hindlimbs, focusing an stimulation intensities and frequencies of interest for functional electrical stimulation (FES). NC stimulation produced very steep and surprisingly unstable recruitment, mostly of the fast-fatiguable (FF) motor units (MUs). IM stimulation produced more gradual, reliable and less fatigable recruitment of a mix of MUs that tended to be localized in neuromuscular compartments

Published in:

[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint  (Volume:1 )

Date of Conference:

1999