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Evaluation of an Automated Method for Analysing the Electromyogram

Published online by Cambridge University Press:  18 September 2015

R.E.P. Sica ,
A.J. McComas  and
J.C.D. Ferreira
R.E.P. Sica
Affiliation:
Medical Research Council Group in Developmental Neurobiology, McMaster University, Hamilton, Ontario, Canada
A.J. McComas*
Affiliation:
Medical Research Council Group in Developmental Neurobiology, McMaster University, Hamilton, Ontario, Canada
J.C.D. Ferreira
Affiliation:
Medical Research Council Group in Developmental Neurobiology, McMaster University, Hamilton, Ontario, Canada
*
Department of Neurology, Room 4U7, McMaster University Medical Centre, 1200 Main Street West, Hamilton, Ontario, Canada, L8S 4J9.
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Summary

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An automated system, incorporating the ANOPS-101 mini-computer, has been used to analyse the EMG. The vastus medialis (VM) and biceps brachii (BB) muscles were studied in 28 controls, 16 patients with myopathies, and in 26 patients with denervating disorders. For each muscle mean values were computed for the durations and numbers of phases of muscle action potentials; the mean density and amplitude of the deflections in the interference pattern were also measured. A higher incidence of abnormalities could be detected in myopathic than in neuropathic disorders; for both conditions the incidence was significantly greater in BB than in VM. For the diagnosis of denervation the most useful measurement was that of potential duration; for the detection of myopathies amplitude determinations were also very useful. The present results have been compared with those of other published studies in which automatic EMG analysis has been employed.

Type
Research Article
Information
Canadian Journal of Neurological Sciences , Volume 5 , Issue 3 , August 1978 , pp. 275 - 281
Copyright
Copyright © Canadian Neurological Sciences Federation 1978

References

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