Electromyogram
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Electromyogram
An electromyogram (EMG) is a test that measures the electrical discharges made by the muscles. It can determine whether muscle weakness or paralysis is due to a nerve problem or to a problem with the muscle itself.
During an electromyogram, a thin needle is placed in a muscle to measure its electrical activity at rest and during use. The needle is attached to a machine with a viewing screen (like a TV) that displays electrical activity in the muscles as waves on the screen.
Credits
| Author | Monica Rhodes |
| Editor | Maria Essig |
| Associate Editor | Tracy Landauer |
| Primary Medical Reviewer | Anne C. Poinier, MD - Internal Medicine |
| Specialist Medical Reviewer | Colin Chalk, MD, CM, FRCPC - Neurology |
| Last Updated | July 29, 2008 |
| Last updated: | July 29, 2008 |
|---|---|
| Author: | Monica Rhodes |
| Reviewed By: | Anne C. Poinier, MD - Internal Medicine, Colin Chalk, MD, CM, FRCPC - Neurology |
| Editors: | Maria Essig, Tracy Landauer |
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