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.
November 30, 2011
Anne C. Poinier, MD - Internal Medicine & Colin Chalk, MD, CM, FRCPC - Neurology
How this information was developed to help you make better health decisions.
To learn more visit Healthwise.org
© 1995-2013 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
We are happy to take your appointment request over the phone, or, you may fill out an online request form.
Disclaimer: The information on this website is for general informational purposes only and SHOULD NOT be relied upon as a substitute for sound professional medical advice, evaluation or care from your physician or other qualified health care provider.