Movements of the Eyes EOG

Electrooculography (EOG)

A technique to measure eye movements by recording the electrical potential difference between the front of the cornea and the back of the retina.

Microsaccades

Minor repetitive, involuntary, quick movements of the eyeball that occur during visual fixation.

Exrtinsic eye muscles

Six tiny striated muscles that control the movement of the eyeball within the orbit.

Fovea

The area of the retina with the highest density of cones, where the highest visual acuity can be achieved.

Stereo vision

The ability to perceive depth by using the slightly different images from each eye.

Task evoked pupillary response

Change in pupil size in response to a stimulus, reflecting engagement and cognitive processes.

Cranial nerve III

The oculomotor nerve responsible for controlling most of the eye's movements.

Cranial nerve V

The trigeminal nerve, involved in pupil dilation through sympathetic activation.

Pupillography

The measurement of changes in pupil size, often used in psychological research.

Startle reflex

An eye blink response to a sudden unexpected stimulus, measurable via EMG.