Skip to Content
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
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.
Current as of:
June 1, 2016
Anne C. Poinier, MD - Internal Medicine & Adam Husney, MD - Family Medicine & Colin Chalk, MD, CM, FRCPC - Neurology
To learn more about Healthwise, visit Healthwise.org.
© 1995-2016 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
© Copyright 2017 Rush-Copley Medical Center • 2000 Ogden Avenue; Aurora, IL 60504
Main: 630-978-6200 • Physician Referral & Information: 630-978-6700 or 866-4COPLEY (866-426-7539)