Maximal and minimal motor nerve conduction velocities determined by a collision method: correlation with axonal conduction velocity of type-identified motor units

Maximal and minimal motor nerve conduction velocities of the medial gastrocnemius (MG) muscle nerve were measured by a new collision method in 20 rats of 8–9 weeks of age; the rate of tension increase produced by the muscle was also recorded. Single motor unit analysis in the other 20 rats obtained...

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Bibliographic Details
Published inJournal of the neurological sciences Vol. 110; no. 1; pp. 131 - 138
Main Author Arasaki, Keisuke
Format Journal Article
LanguageEnglish
Published Shannon Elsevier B.V 01.07.1992
Elsevier Science
Subjects
Action Potentials
Animals
Axonal conduction velocity
Axons - physiology
Biological and medical sciences
Central nervous system
Collision method
Electric Stimulation - methods
Electrophysiology
Electrophysiology - methods
Electroshock
Fundamental and applied biological sciences. Psychology
Minimal motor nerve conduction velocity
Motor Neurons - physiology
Motor unit
Muscle Contraction
Muscles - innervation
Neural Conduction
Rat
Rats
Rats, Inbred Strains
Vertebrates: nervous system and sense organs
Minimal motor nerve conduction velocity
Collision method
Axonal conduction velocity
Rat
Motor unit
Peripheral nervous system
Electrodiagnosis
Pathophysiology
Animal
Collision
Electrophysiology
Exploration
Motor nerve
Conduction velocity
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Summary:Maximal and minimal motor nerve conduction velocities of the medial gastrocnemius (MG) muscle nerve were measured by a new collision method in 20 rats of 8–9 weeks of age; the rate of tension increase produced by the muscle was also recorded. Single motor unit analysis in the other 20 rats obtained axonal conduction velocity and contractile properties of type-identified MG motor units. Comparison of the data from these experiments revealed that the maximal and minimal motor nerve conduction velocities obtained by this collision method were most likely to be the axonal conduction velocity of fast-twitch and slow-twitch motor units, respectively. Therefore, these motor nerve conduction velocities in man may also be used as functional parameters of human fast-twitch and slow-twitch motor units, respectively.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:0022-510X
1878-5883
DOI:10.1016/0022-510X(92)90019-H