![]() These tests are rarely needed to diagnose neuropathy. Electromyography shows how well muscles respond to electrical signals transmitted by nearby nerves. ![]() Nerve conduction studies check the transmission of electrical current through a nerve. Nerve conduction studies or electromyography are sometimes used to help determine the type and extent of nerve damage. Electromyography (EMG) is a minimally invasive procedure to evaluate the electrical activity of the nerve roots in your spine. EP tests also involve two sets of electrodes-one set for stimulating a nerve (these electrodes are attached). ![]() The second set of electrodes is used to make a recording of the nerve's electrical signals, and from this information the doctor can determine if there is nerve damage. The first set gives the patient a mild shock that stimulates the nerve that runs to that muscle. With nerve conduction studies the doctor uses two sets of electrodes (similar to those used during an electrocardiogram) that are placed on the skin over the muscles. Thin needles are inserted in muscles and a physician can see or listen to electrical signals displayed on an EMG machine. During the test, your nerve is stimulated, usually with electrode patches attached to your skin. ![]() Electrodiagnostic procedures include electromyography (EMG), nerve conduction studies, and evoked potential (EP) studies. Information from EMG can help physicians tell precisely which muscles or nerves are affected by weakness or pain. A nerve conduction velocity (NCV) test also called a nerve conduction study (NCS) measures how fast an electrical impulse moves through your NCV can identify nerve damage. ![]()
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