define emg procedure
Electromyography (EMG) is a diagnostic procedure to assess the health of muscles and the nerve cells that control them (motor neurons). Motor neurons transmit electrical signals that cause muscles to contract. An EMG translates these signals into graphs, sounds or numerical values that a specialist interprets.
Highlights. 1  Electromyography (EMG) is a procedure that assesses the health of muscles and nerves. 2  There are usually two parts to an EMG procedure: the nerve conduction study and the needle EMG. 3  Abnormal EMG results usually indicate nerve or muscle damage.