Electrophysiological estimation of the number of motor units within a human muscle.

Journal of neurology, neurosurgery, and psychiatry ·Vol. 34 ·No. 2 ·1971-04-00 ·Pages 121-31

McComas AJ, Fawcett PR, Campbell MJ, Sica RE

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.

MeSH Terms

Action Potentials Adolescent Adult Axons Child Child, Preschool Electric Stimulation Electromyography Electrophysiology Evoked Potentials Female Humans Male Membrane Potentials Methods Middle Aged Motor Neurons/physiology Muscles/innervation,physiology Nerve Fibers, Myelinated Neuromuscular Junction Peroneal Nerve/anatomy & histology,physiology Toes/innervation,physiology

Authors & Affiliations

4 authors, click to expand affiliations / ORCID

McComas A J

Fawcett P R

Campbell M J

Sica R E

References (16)

16 references, click to expand

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Article Info

Journal

Journal of neurology, neurosurgery, and psychiatry

Abbr.

J Neurol Neurosurg Psychiatry

ISSN

0022-3050

DOI

10.1136/jnnp.34.2.121

Published

1971-04-00

Pages

121-31

Language

English

Region

England

NLM ID

2985191R

PMCID

PMC493722

Subset

External Links

PubMed source DOI: 10.1136/jnnp.34.2.121 PMC Full Text View journal details

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Electrophysiological estimation of the number of motor units within a human muscle.

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