Someone who is versed in technology.

A person trained in the management of an electroencephalographic laboratory.

The technologist may supervise electroencephalographic technicians, who are generally responsible for the operation and maintenance of the equipment.

An allied health professional who, in collaboration with an electroencephalographer, obtains interpretable recordings of a patient's nervous system functions.

The electrodiagnostic technologist takes a patient's history; applies adequate recording electrodes and uses optimal EEG (electroencephalograph), EP (evoked potential or a test of nerve response that uses electrodes placed on the scalp to measure brain reaction to a stimulus such as a touch), and PSG (polysomnogram or the recording of the monitoring of relevant normal and abnormal physiological activity during sleep) techniques; and documents the clinical conditions of patients.

A sleep specialist who monitors sleep studies and records the relevant physiologic variables: After a test is completed, a polysomnographic technologist analyzes the recorded data by checking for breathing irregularities, sudden changes in brain-wave activity, cardiac rhythm abnormalities, leg movements, body positions, and oxygen saturation during the patient's sleep.