Electromyogram


This topic has not yet been translated. (Tema aún no ha sido traducido.)

This topic has not yet been translated. (Tema aún no ha sido traducido.)

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.

Current as of: October 9, 2017

Author: Healthwise Staff

Medical Review: Anne C. Poinier, MD - Internal Medicine & Adam Husney, MD - Family Medicine & Martin J. Gabica, MD - Family Medicine & Karin M. Lindholm, DO - Neurology