Document Detail

Multiple EMG activity and intracortical inhibition and facilitation during a fine finger movement under pressure.
MedLine Citation:
PMID:  21218324     Owner:  NLM     Status:  MEDLINE    
The 1st purpose of this study was to examine multiple electromyography (EMG) during voluntary hand movements. A secondary purpose was to investigate possible effects of pressure on intracortical inhibition (ICI) and intracortical facilitation (ICF) functions of the motor cortex, using paired-pulse transcranial magnetic stimulation. Twelve participants traced a 15-cm diameter target circle using a small laser pointer attached to the right index finger. After 5 acquisition trials, they performed 3 nonpressure trials followed by 3 pressure trials. The results showed that pressure had effects not only on agonist EMG activity but also on multiple muscles, such as synergist. In addition, a decrease in ICI and an increase in ICF were both observed under pressure for muscles other than the agonist.
Yoshifumi Tanaka; Kozo Funase; Hiroshi Sekiya; Joyo Sasaki; Toru Takemoto
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of motor behavior     Volume:  43     ISSN:  1940-1027     ISO Abbreviation:  J Mot Behav     Publication Date:  2011  
Date Detail:
Created Date:  2011-01-10     Completed Date:  2011-04-28     Revised Date:  2011-07-11    
Medline Journal Info:
Nlm Unique ID:  0236512     Medline TA:  J Mot Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  73-81     Citation Subset:  IM    
Faculty of Economics, Tezukayama University, Nara, Japan.
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MeSH Terms
Electromyography / methods*
Fingers / physiology*
Motor Cortex / physiology*
Movement / physiology*
Neural Inhibition / physiology*
Psychomotor Performance / physiology
Stress, Psychological / physiopathology*
Transcranial Magnetic Stimulation / methods
Young Adult

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