electro-oc'ulogram; EOG A record on paper of film of electric currents using electrodes placed on the skin adjacent to the eyes to detect movement of the eyeball. Helps in determining rapid eye movement (REM) stage of sleep. Term: Definition: .
A recording of the movements of the eyes. If rapid eye movements are detected during sleep, the subject is in REM sleep, which is the state in which vivid dreaming takes place. EOG is recorded in both diagnostic and CPAP titration sleep studies.