Neural Control of Muscle

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Author(s): Parveen Bawa (Simon Fraser University, Canada)and Kelvin E. Jones (University of Alberta, Canada)
Copyright: 2014
Pages: 27
Source title: Applications, Challenges, and Advancements in Electromyography Signal Processing
Source Author(s)/Editor(s): Ganesh R. Naik (University of Technology Sydney (UTS), Australia)
DOI: 10.4018/978-1-4666-6090-8.ch001

Keywords: Medical Information Science Reference / Medical Technologies / Medicine & Healthcare

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Abstract

The purpose of this chapter is to introduce the reader to the development of ideas and concepts about the manner in which the central nervous system controls muscle contraction. The motor unit, the quantum of muscle contraction, is fundamental to concepts of the neural control of muscle and will be the focus of discussion. The population of motor units comprising a skeletal muscle have a diverse range of physiological and anatomical properties. The Size Principle of motor unit recruitment is a concept that proposes a simple strategy for exploiting the diversity of the motor unit population to produce graded force output. The Size Principle has a great deal of empirical support, but also faces criticism about the extent of generalization to all types and forms of movement. As the key principles of motor units are discussed, methods of measuring and methodology for analysing motor unit activity and whole muscle activities are introduced.

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