NeuroHealth Diagnostic Testing: Nerve Conduction Studies and Electromyography
These tests detect nerve and muscle problems and help determine the cause of muscle weakness, numbness or pain. The tests are most commonly ordered to diagnose pinched nerves in the neck, lower back or extremities, i.e. carpal tunnel syndrome. A detailed exam is required before administering these tests to pinpoint specific problem areas and to avoid unnecessary testing.

Nerve Conduction Studies (NCS)
NCS tests measure the speed and response of nerves to electrical stimulation. A small electrode taped to your skin records tiny electrical impulses sent through your nerves by an electrical stimulator. You may notice a slight tingling sensation during testing. The doctor will evaluate the electrical responses and determine if the nerve impulses are conducted normally; conducted at a slow speed; or not transmitted at all, suggesting damage to the nerve.

Electromyography (EMG)
EMG measures the electrical activity of muscles. A small, fine, single-use pin electrode is inserted into suspected problem muscles to determine whether they are working normally. You may experience a mild pinch or ache as the pin is inserted. This discomfort subsides by the end of the test.