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electromyography |
Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson | 0.10 sec. |
electromyographyProcess of graphically recording the electrical activity of muscle, which normally generates an electric current only when contracting or when its nerve is stimulated. Electrical impulses are shown as wavelike tracings on a cathode-ray oscilloscope and recorded as an electromyogram (EMG), usually along with audible signals. The EMG can show whether muscle weakness or wasting is due to nerve impairment (as in amyotrophic lateral sclerosis and poliomyelitis) or muscle impairment or disease (myopathy). |
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Flexible and rigid endoscopy demonstrated right vocal fold hypomobility; this finding was confirmed by electromyography, which revealed a 30% reduction in recruitment in both the superior and recurrent laryngeal nerves on the right. This book is an update of a classic reference book on electromyography. In patients with poliomyelitislike syndrome undergoing electromyography studies, the absence of voluntary motor unit potentials was associated with lack of strength improvement in involved myotomes. |
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electromyography
