An experiment to test generalization of feedback from frontalis EMG

60 subjects participated in a test of the effectiveness of frontalis EMG feedback as a generalized relaxation technique. The experiment was performed in two parts. In the first part, 30 subjects were randomly allocated to a group receiving frontalis EMG feedback (n = 10), a group receiving non-conti...

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Bibliographic Details
Published inPerceptual and motor skills Vol. 50; no. 1; p. 27
Main Author Le Boeuf, A
Format Journal Article
LanguageEnglish
Published United States 01.02.1980
Subjects
Biofeedback, Psychology
Electromyography
Facial Muscles - physiology
Female
Forearm
Forehead
Generalization, Response
Humans
Leg
Masseter Muscle - physiology
Muscle Relaxation
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Summary:60 subjects participated in a test of the effectiveness of frontalis EMG feedback as a generalized relaxation technique. The experiment was performed in two parts. In the first part, 30 subjects were randomly allocated to a group receiving frontalis EMG feedback (n = 10), a group receiving non-contingent feedback (n = 10) and a group instructed to relax themselves (n = 10). Each group received one baseline session and five training sessions. EMG measurements from the frontalis, trapezius and masseter muscles taken prior to and immediately after the final training session indicated that the frontalis feedback group was more effective in lowering frontalis and masseter EMG activity (though not trapezius activity) than the controls. The second part of the experiment was identical to the first with the exception that the subsidiary muscle sites were the forearm and leg extensors. The results showed that frontalis feedback was no more effective than controls in lowering the EMG levels of these muscles.
ISSN:0031-5125
DOI:10.2466/pms.1980.50.1.27