This result is then interpreted by the physician. The impulse is then captured and diagnostic variables – such as conduction velocity and amplitude – are calculated. Electrodes are placed on the skin to pick up the electrical impulse downstream from the stimulation point. It is usually not painful, and most people are comfortable during this portion of the test. In this test, a nerve is stimulated with a brief electric shock and then the signal travels down the nerve. This is a diagnostic test which provides information about abnormal conditions in the nerves. Most electrodiagnostic studies start with a nerve conduction test. The tests can be used for a variety of conditions including pain, numbness, weakness, muscle atrophy, tingling, fatigue, and fatigue. The purpose of the test is to localize and pinpoint where your symptoms are coming from. EMG and NCS is an electrical test for your nerves and muscles. Specialized nerve tests called Electromyography and Nerve Conduction Studies are designed to diagnose abnormalities in the functioning of nerves.Įlectrodiagnostic testing involves two separate tests including Nerve Conduction Studies (NCS) and Electromyography (EMG). It is very important to be able to evaluate the nerves when dealing with spinal problems or other musculoskeletal issues. As the spinal cord descends, there are spinal nerves that branch off and go to various parts of the body. The spinal cord is a thick bundle of nerves and other tissue that extends from the brain through the spinal column.

Nerve conduction test on back