Fine-wire recordings of flexor hallucis brevis motor units up to maximal voluntary contraction reveal a flexible, nonrigid mechanism for force control-Reference-Cited by-同舟云学术

Fine-wire recordings of flexor hallucis brevis motor units up to maximal voluntary contraction reveal a flexible, nonrigid mechanism for force control

Published:2020-05-01 Issue:5 Volume:123 Page:1766-1774
ISSN:0022-3077
Container-title:Journal of Neurophysiology
language:en
Short-container-title:Journal of Neurophysiology

Author:

Aeles J.¹^ORCID,Kelly L. A.¹^ORCID,Yoshitake Y.¹²,Cresswell A. G.¹

Affiliation:

1. The University of Queensland, School of Human Movement and Nutrition Sciences, Brisbane, Queensland, Australia

2. Graduate School of Science and Technology, Shinshu University, Nagano, Japan

Abstract

We recorded for the first time single motor unit action potential trains in the flexor hallucis brevis, a short toe muscle, over the full range of maximum voluntary contraction. Its motor units are recruited up to very high (98%) recruitment thresholds with a substantial range of discharge rates. We further show high variability with crossover of discharge rates as a function of recruitment threshold both between participants and between motor units within participants.

Publisher

American Physiological Society

Subject

Physiology,General Neuroscience

Link

https://journals.physiology.org/doi/pdf/10.1152/jn.00023.2020

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