Document Detail

Heart rate and finger pulse amplitude during muscular relaxation with frontalis versus forearm EMG feedback.
MedLine Citation:
PMID:  397838     Owner:  NLM     Status:  MEDLINE    
Twenty-nine volunteers participated in a one-session experiment consisting of 10 min rest followed by a 30 min treatment period. Brief relaxation instructions were given at the beginning of the rest period. The treatment was either frontalis EMG feedback, forearm EMG feedback, or non-contingent stimulation. The two feedback groups showed EMG decreases in their respective target muscles during the no-feedback rest period, with no further decrease during feedback training, indicating that feedback was no more effective than relaxation instructions. Heart rate decreased significantly in both feedback groups. Finger pulse amplitude decreased significantly in the forearm feedback group. It is pointed out that the latter change does not necessarily indicate peripheral vasoconstriction, but may be due to a fall in pulse pressure as a consequence of increased blood flow to the relaxing muscles. The results are unsupportive of the assumption that frontalis relaxation is particularly effective in inducing a generalized relaxation.
F Sagberg
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Biological psychology     Volume:  9     ISSN:  0301-0511     ISO Abbreviation:  Biol Psychol     Publication Date:  1979 Nov 
Date Detail:
Created Date:  1980-08-15     Completed Date:  1980-08-15     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  0375566     Medline TA:  Biol Psychol     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  201-14     Citation Subset:  IM    
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MeSH Terms
Biofeedback, Psychology*
Facial Muscles / physiology
Fingers / blood supply
Heart Rate*
Muscle Contraction*
Muscle Relaxation*
Muscles / blood supply
Relaxation Therapy

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

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