![]() An EMG may be uncomfortable during the test. Your doctor will share the results with you. More than one muscle is typically tested. The examiner may reposition the electrodes throughout the test. A computer records nerve impulses while the muscle is at rest and during muscle movement. The electrodes transmit information about the nerve/muscle electrical activity. ![]() To begin, your doctor will place fine needle electrodes through the skin and into the muscles that a nerve controls. The nerve test typically lasts 30 to 60 minutes. EMGs can take place at a doctor's office or in a hospital. ![]() DiagnosisĮMGs are usually outpatient electrodiagnostic procedures. EMGs help doctors diagnose neuromuscular disease, neurological disorders, muscle disease, and nerve abnormalities associated with pain or numbness. Doctors use EMG to identify muscle function as related to nerve input. ![]() Healthy muscles need nerve input to perform movements. Nerves throughout the body exchange information with the brain through nerve impulses. Electromyography (EMG) is an electrodiagnostic test that measures the nerve impulses in muscles during contraction. ![]()
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