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PubMed · 836190

Electrical activity in voluntarily contracting muscle.

J Kimura
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Abstract

The collision technique was used to determine the relationship between the electrical potential and the force produced by a voluntarily contracting first dorsal interosseus muscle. The method allows, in effect, synchronization of nerve impulses of asynchronously firing motoneurons subserving voluntary contraction. A compound muscle action potential, M (voluntary), thus recorded as an electrical corollary of muscle contraction, related linearly to the force of contraction under isometric conditions. Using M(voluntary), an approximate percentage of motoneuron pool discharging during a 10-msec period was calculated at various levels of voluntary effort. In ten healthy subjects, it increased linearly with muscle force from 2.4% +/- 1.4% at 0.5 kg to 23.5% +/- 9.6% at 4.5 kg.

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Action PotentialsAdultFemaleHumansMaleMotor NeuronsMuscle ContractionReaction TimeJournal ArticleResearch Support, U.S. Gov't, P.H.S.

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BibTeXRIS

J Kimura. 1977. Electrical activity in voluntarily contracting muscle.. https://doi.org/10.1001/archneur.1977.00500140039006

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