Abstract

Vestibulo-ocular reflex is a reflex eye movement that stabilizes images on the retina during head movement by producing an eye movement in the direction opposite to head movement, thus preserving the image on the center of the visual field. The peripheral vestibular receptors which detect head movement transduce the physical stimulus into electrical signals and send the signals to the vestibular nuclei in the beainstem via the vestibular nerve. From these nuclei, fibers project to the ocular motor nuclei which contain motoneurons that drive extraocular muscle activity. Characteristics of anatomy and physiology of the vestibulo-ocular system, stimulation of the vestibular system, measurement and analysis of eye movement, and clinical significance of the vestibule-ocular reflex were described as followings.

• Keywords: Parkinson disease;Eye movement;Dizziness;Saccades;