ABSTRACT
Electromyography (EMG) applies to an electrical recording technique which has been used extensively in studies of craniomandibular muscle function and complements the earlier anatomical studies of these muscles and has been supplemented by later techniques with particular emphasis on histochemistry. Electromyography records the electrical signals which originate from the muscle fibers of the muscle and can exhibit various durations and shapes dependent upon the type of electrode and whether it is placed within the muscle for intramus cular recordings or over the muscle as a surface electrode. While the individual muscle fiber is the primary source of the recorded signals, almost all recording techniques using fine wires to surface recording electrodes record from a functional group of muscle fibers defined as a motor unit.
