The responsibilities of a Registered Polysomnographic Technologist (RPSGT) are to assist clinicians and medical researchers with sleep studies and research related to sleep disorders. The specific duties of an RPSGT are to set up sleep labs for studies, monitor each patient during the study, and score sleep stages according to the guidelines of the study or hospital. Set-up includes preparing each patient for the test, reviewing their medical history, and applying sensing equipment and electrodes to them before they begin the study. During sleep studies, an RPSGT may also monitor patient health and record data.