Document Detail


Motor unit potentials at high muscle activity recorded by selective electrodes.
MedLine Citation:
PMID:  3964247     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The selectivity of different kinds of electrodes for recording of single motor unit potentials was theoretically evaluated. A new type of selective "branched", superficial and subcutaneous wire electrodes was described. The discharge of single alpha motoneurons during movements against elastic resistance was investigated studying motor unit potentials in m. biceps brachii and m.interosseus dorsalis l. Depending on the velocity of the movement, the following pattern of discharge was found: 1) At slow velocity the frequency of discharge increased and new motor units were recruited. 2) At higher velocity the frequency of discharge was constant. The muscle force increased only when new motor units were recruited. 3) At very quick ballistic movements the frequency of discharge decreased during the movement.
Authors:
A Gydikov; D Kosarov; A Kossev; K Kostov; N Trayanova; N Radicheva
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Biomedica biochimica acta     Volume:  45     ISSN:  0232-766X     ISO Abbreviation:  Biomed. Biochim. Acta     Publication Date:  1986  
Date Detail:
Created Date:  1986-05-09     Completed Date:  1986-05-09     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8304435     Medline TA:  Biomed Biochim Acta     Country:  GERMANY, EAST    
Other Details:
Languages:  eng     Pagination:  S63-8     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adult
Biophysical Phenomena
Biophysics
Electrodes
Electromyography / instrumentation*
Female
Humans
Male
Middle Aged
Motor Neurons / physiology*
Muscle Contraction
Muscles / anatomy & histology,  physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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