What is EMG (Electromyogram)?
An Electromyogram (EMG) is a test that is used to record the electrical activity of muscles. An EMG is often performed when patients have unexplained muscle weakness. The EMG helps to distinguish between muscle conditions in which the problem begins in the muscle and muscle weakness due to nerve disorders
Patient must sit up for this test. Dabs of ointment are applied at certain spots on the person's scalp and each ear lobe. Electrodes are placed on these spots. As earphones deliver clicks to each ear, brain waves sensed by the electrodes are graphed.