The recording of the electric currents produced by eye movements.

1. A record of the speed and direction of eye movements between two fixed points, determined by registering differences in electric potential which is used to detect retinal dysfunction.
2. A record of the standing voltage between the front and back of the eye which is correlated with eyeball movement and obtained by electrodes placed on the skin near the eye.
3. A record of the difference in electrical charge between the front and back of the eye that is correlated with eyeball movement; as in REM sleep, and that is obtained by electrodes placed on the skin near the eye.