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Electrophysiological estimation of the number of motor units within a human muscle
  1. A. J. McComas,
  2. P. R. W. Fawcett,
  3. M. J. Campbell,
  4. R. E. P. Sica
  1. Muscular Dystrophy Research Laboratories, Newcastle General Hospital, Newcastle upon Tyne

    Abstract

    An electrophysiological method is described for estimating the numbers of motor units in the extensor digitorum brevis muscle in man. The results obtained are compared with counts of axons in the nerve to the muscle. The significance of the sizes of the evoked motor unit potentials is discussed.

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