Font Size
A
A
A

Nerve Conduction Studies


Nerve conduction studies are tests that measure how well individual nerves can send an electrical signal from the spinal cord to the muscles. Nerve conduction studies are often used to help diagnose nerve disorders, such as carpal tunnel syndrome or Guillain-Barré syndrome.

During a nerve conduction test, a health professional places a shock-emitting electrode directly over the nerve to be studied, and a recording electrode over the muscles supplied by that nerve. The shock-emitting electrode sends repeated, brief electrical pulses to the nerve, and the recording electrode records the time it takes for the muscle to contract in response to the electrical pulse.

Diagnostic uses for nerve conduction studies include:

  • Detecting and evaluating damage to the peripheral nervous system, which includes all the nerves that lead away from the brain and spinal cord and the smaller nerves that branch out from those nerves.
  • Identifying the cause of abnormal sensations, such as numbness, tingling, or pain.
ByHealthwise Staff
Primary Medical ReviewerAnne C. Poinier, MD - Internal Medicine
Specialist Medical ReviewerColin Chalk, MD, CM, FRCPC - Neurology
Last RevisedNovember 30, 2011

eMedicineHealth Medical Reference from Healthwise

This information does not replace the advice of a doctor. Healthwise disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. How this information was developed to help you make better health decisions.

To learn more visit Healthwise.org

© 1995-2012 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.






Medical Dictionary