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Definition of Electromyogram

Electromyogram: A test that records the electrical activity of muscles. Normal muscles produce a typical pattern of electrical current that is usually proportional to the level of muscle activity. Diseases of muscle and/or nerves can produce abnormal electromyogram patterns. Abbreviated EMG. Also known as a myogram.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=34018
Last Editorial Review: 3/19/2012

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