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What is NCV (Nerve Conduction Velocity)?

Nerve Conduction Velocity (NCV) is a test of the speed of electrical signals through a nerve. Patches called electrodes are placed on the skin over the nerves at various points. This generates a mild electrical impulse to stimulate the nerve. The distance between electrodes and the time it takes for electrical impulses to travel between electrodes are used to determine the speed of the nerve signals.


General Instructions

No general instructions


Procedure

  • You will be asked to remove any clothing, jewelry, hairpins, eyeglasses, hearing aids, or other metal objects that may interfere with the procedure
  • If you are asked to remove clothing, you will be given a gown to wear
  • You will be asked to sit or lie down for the test
  • A recording electrode will be attached to the skin over the nerve with a special paste and a stimulating electrode will be placed at a known distance away from the recording electrode