![]() ![]() An NCS measures the flow of electrical current through a nerve before it reaches a muscle. Neurologists often perform an EMG test alongside a nerve conduction study (NCS). An EMG can detect issues with your motor nerves, muscles or the communication between the two. To produce movement, your motor (movement) nerves send electrical signals to your muscles. It’s one form of electrodiagnostic testing.Įvery body movement you make, from lifting your leg to nodding your head, involves complex communication between your central nervous system (your brain and spinal cord), nerves and muscles. Electromyography (EMG) is a diagnostic test that evaluates the health and function of your skeletal muscles and the nerves that control them.
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