A model of visual-vestibular interaction in cerebellar disorders.
The number of saccades, vestibular gain and visual suppression as a function of smooth pursuit gain were determined in 10 cerebellar cases. Visual suppression increased and the number of saccades decreased with increasing smooth pursuit gain while a high vestibular gain was found in most cases but without relation to the gain of smooth pursuit. An eye-motor model is presented according to which all findings could be related to a disturbance of proper cerebellar processing of optic impulses and of impulses to the vestibular nuclei in the paramedian reticular formation.
D002526:Cerebellar Diseases / Q000503:physiopathology*; D005133:Eye Movements; D006801:Humans; D008959:Models, Neurological; D009760:Nystagmus, Physiologic; D010775:Photic Stimulation; D011698:Pursuit, Smooth; D012154:Reticular Formation / Q000502:physiology; D012438:Saccades; D014722:Vestibule, Labyrinth / Q000502:physiology*