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Nerve conduction studies: A nerve conduction study usually takes about 15 to 30 minutes depending on the number of areas to be studied. After the test, the needle electrode is removed. Electrical impulses may also be monitored through a speaker, in which the electrical signals are denoted by a popping sound or monitored on video. On the computer screen the electrical activity may be depicted as wavy and spiky lines. The needle electrode may be moved several times to record the electrical activity in different areas of the muscle. The doctor then records your readings with the muscle at rest and under contraction. You may feel a quick, sharp pain during the insertion of the electrode. A needle electrode is inserted into the muscle, connected by wires to a recording machine. During the test, you will be asked to lie down on a table or bed so that the muscles being tested are relaxed.Įlectromyography: An EMG normally takes about 20 to 40 minutes. It may be conducted in a doctor's office, hospital or clinic. Please take all your usual medications on the day of the procedure.Įlectromyography is performed by an EMG technologist or a doctor. You will be instructed not to use lotion on your skin prior to the procedure. This test can be used to diagnose neurological disorders and disorders such as carpal tunnel syndrome.

Nerve Conduction Studies (NCS) are used to detect damage or injury to the peripheral nervous system (PNS), which consists of the extracranial nerves and spinal cord. An EMG can also be used to evaluate the cause of weakness, paralysis, and muscle twitching.

Your doctor may arrive at a diagnosis based on the results of the EMG along with information from your medical history, physical and neurological examinations, and results from other tests.ĮMG testing can be used for the diagnosis of a variety of disorders that damage muscle tissue, nerves, or the junctions between nerve and muscles. Nerve conduction studies measure the conductivity of the nerves. An EMG is designed to record the electrical activity produced by the muscles, during rest and contraction. Diseases affecting the muscles and nerves can result in abnormal electrical activity.Įlectromyography (EMG) and Nerve conduction studies are diagnostic tests used to detect nerve and muscle disorders and to evaluate the functioning of your nerves and muscles. Nerves use electrical impulses to coordinate muscle movement in our bodies.

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