Ocular motor dysfunction in total and hemicerebellectomized monkeys.
Studies of ocular motor function in monkeys undergoing either total or hemicerebellectomies has revealed the following abnormalities which can be attributed to cerebellar dysfunction: 1. Loss of smooth pursuit movements 2. Gaze-fixation nystagmus 3. Loss of inhibitory input on the vestibular apparatus reflected in a decreased latency and prolonged response to caloric stimuli. It is intimated that the role of the hemicerebellum deals with ipsilateral tone and its effect on eye movements.
D000818:Animals; D002150:Caloric Tests; D002531:Cerebellum / Q000502:physiology*; D005123:Eye / Q000503:physiopathology; D005133:Eye Movements; D005500:Follow-Up Studies; D000882:Haplorhini; D008253:Macaca mulatta; D009759:Nystagmus, Pathologic / Q000209:etiology; D009801:Oculomotor Muscles / Q000502:physiology* / Q000503:physiopathology