Nerve Conduction Studies
EMG and Nerve Conduction Studies (NCS) measure and record electrical activity from specific muscles and nerves. They are most often used to assess symptoms of pain, numbness, tingling, or weakness. These tests take less than one hour.
Nerve Conduction Velocity (NCV) is a common measurement made during an NCS. This test is used to evaluate the electrical conduction of the motor and sensory nerves. Symptoms that might prompt this study include numbness, tingling, and/or burning sensations.
A nerve conduction study is usually done first. It involves the use of a series of small electrical shocks to nerves in specific areas of your arms or legs. Although usually not painful, you may experience a brief tingling sensation or muscle jerking during the tests.