Electromyography (EMG) is a diagnostic test that helps detect neuromuscular abnormalities by measuring electrical activity in the muscles. A very thin needle (electrode) will be inserted through the skin and into the muscle. Once the electrode is in place, the patient will be asked to either contract their muscles or keep their muscles relaxed. The electrode will detect electrical activity and results will be displayed on a nearby monitor (oscilloscope). A nerve conduction velocity (NCV) test is often performed at the same time as an EMG. An NCV helps to differentiate a nerve disorder from a muscle disorder. Typically, not a lot of preparation is necessary for an EMG. An EMG can be used to diagnose a wide variety of neuromuscular diseases, motor problems, nerve injuries, or degenerative conditions, such as: For patients who would like to learn more about electromyography, or for physicians who would like to schedule a test for a patient, please contact the Brigham and Women’s Hospital Neuromuscular Service at (617) 732-8046.What is electromyography?
How is an EMG performed?
How do you prepare for an EMG?
What conditions are diagnosed by using electromyography?
Contact us about electromyography
EMG: Detecting Neuromuscular Abnormalities - Brigham and Women's Hospital (2024)
Table of Contents
What is electromyography?
How is an EMG performed?
How do you prepare for an EMG?
What conditions are diagnosed by using electromyography?
Contact us about electromyography
Neuromuscular Diseases and Electromyography (EMG)
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