Optokinetic nystagmus after cerebellar uvulonodulectomy in squirrel monkeys.
After cerebellar uvulondulectomy in squirrel monkeys (Saimiri sciureus), a change occurred in the optokinetic nystagmus, in that there was a slow-phase eye speed decline, at the stimulus speeds above 90 degrees/sec. The difference was statistically significant when pre- and post-ablative comparisons were made. This result supports the usefulness of the optokinetic nystagmus examination to diagnose conditions which involve posterior inferior vermis of vestibulo-cerebellum. The optokinetic after-nystagmus depicted a similar decline postoperatively.
D000818:Animals; D002531:Cerebellum / Q000502:physiology*; D005133:Eye Movements; D005260:Female; D000882:Haplorhini / Q000502:physiology*; D006801:Humans; D008297:Male; D009622:Noise; D012399:Rotation; D012453:Saimiri / Q000502:physiology*; D014726:Vestibular Nuclei / Q000502:physiology