What is electromyography (emg )?

Electromyography: Emg and ncv testing is used to help diagnose nerve and muscle problems. Examples include spinal nerve impingement (from herniated disc), carpel tunnel syndrome, ulnar syndrome, sources of radiating pain. Pain, numbness, weakness, muscle fatigue are some of the reasons that you may need an emg/ncv test.

Nerve & muscle test: Emg (electromyography) is a test of your muscles and nerves. It is typically performed along with nerve conduction studies (ncs). The EMG portion involves placing a recording pin (like a fine wire antenna) into various muscles, looking for 'muscle distress signals' that could suggest nerve or muscle diseases/problems. Nerve conduction studies involve stimulating nerves & recording their signals.