In an NCV, the nerves to be evaluated are stimulated with small electrical impulses by one electrode. Laying in a comfortable position and being calm with relaxed muscles helps to lessen and discomfort during the test.Ī Nerve Conduction Velocity (NCV) is an electrical diagnostic test. The discomfort is generally mild and does not require sedatives or anesthesia. There can be some discomfort during an EMG. The EMG results help your clinician and referring doctor to distinguish between muscle conditions that begin in the muscle and nerve disorders that cause muscle weakness. A damaged muscle produces an altered electrical signal which can be analyzed with an EMG.Īn EMG is used to detect an abnormal muscle electrical signal. Muscles typically produce an electrical signal of a specific size, shape, and sound. An EMG is performed using a machine which detects the tiny bit of electricity that is produced by muscles when they are active. An Electromyography (EMG) is a technique used to evaluate and record the electrical activity produced by muscles.
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