title: The binocular contribution to monocular optokinetic nystagmus and after nystagmus asymmetries in humans.
abstract: Stereoblind subjects show marked monocular asymmetries in both OKN and OKAN, while normal subjects produce more balanced nystagmus. There is a negative relationship between the magnitude of the asymmetries and the magnitude of a binocular contribution to OKN production as measured with dichoptic, strobe illumination. A second experiment with normal subjects corroborated this relationship, revealing a small, but significant asymmetry in these subjects' OKAN. Further, there was no correlation between the monocular nystagmus asymmetries and stereoacuity. The results are explained in terms of subcortical binocular mechanisms.
mesh_terms: D000293:Adolescent; D000328:Adult; D000550:Amblyopia / Q000503:physiopathology*; D003867:Depth Perception / Q000502:physiology*; D005133:Eye Movements; D006801:Humans; D008875:Middle Aged; D009760:Nystagmus, Physiologic; D010468:Perceptual Disorders / Q000503:physiopathology*; D014794:Visual Fields