The health professional who conducts an electromyography test is known as a neurologist, a nervous system specialist, states Johns Hopkins Medicine. A technologist may also perform some parts of the test. The test is performed to measure the electrical activity in response to a nerve's stimulation of the muscle.
An EMG test helps to find diseases that affect the nerves and muscle tissues, says WebMD. Patients undergo the test immediately after a nerve conduction study, a procedure that measures the flow of electrical signals through the nerves before reaching the muscle. A neurologist explains the procedure to a patient and allows the patient to ask any questions regarding the test.