Special steps will need to be taken before the test if you have one of these devices. Tell your health care provider if you have a pacemaker or cardiac defibrillator. Will I need to do anything to prepare for these test? Tingling or numbness in arms, legs, hands, feet, and/or face You may need these tests if you have symptoms of a muscle or nerve disorder. Why do I need an EMG test and a nerve conduction study? When EMG tests and nerve conduction studies are done together, it helps providers tell if your symptoms are caused by a muscle disorder or a nerve problem. Nerve conduction studies help diagnose nerve damage or disease.

An EMG test helps find out if muscles are responding the right way to nerve signals. What are they used for?ĮMG and nerve conduction studies are used to help diagnose a variety of muscle and nerve disorders. It has a role in localization of the site of the lesion, and identifying the pathology.

It is commonly used to diagnose entrapment neuropathies, plexopathies, radiculopathies, neuromuscular junction disorders, myopathies, anterior horn cell disease and can prognosticate functional recovery. At times it can reveal some dysfunction of the nerves and muscles, which was not detected in the physical exam. The Electrodiagnostic evaluation is considered to be an extension of the neurological examination of the peripheral nervous system. Other names: electrodiagnostic study, EMG test, electromyogram, NCS, nerve conduction velocity, NCV These tests can be done separately, but they are usually done at the same time. As your muscles react, they give off these signals, which can then be measured.Īn EMG test looks at the electrical signals your muscles make when they are at rest and when they are being used.Ī nerve conduction study measures how fast and how well the body's electrical signals travel down your nerves.ĮMG tests and nerve conduction studies can both help find out if you have a disorder of your muscles, nerves, or both. Nerves send out electrical signals to make your muscles react in certain ways. What are electromyography (EMG) and nerve conduction studies?Įlectromyography (EMG) and nerve conduction studies are tests that measure the electrical activity of muscles and nerves.

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