Effects of lesions of the cerebellar oculomotor vermis on eye movements in primate: Binocular control

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Abstract

The effects of lesions of the dorsal 'oculomotor' cerebellar vermis on binocular oculomotor functions in three monkeys were examined. Prominent findings included (1) a convergence bias during monocular fixation, i.e., an 'esodeviation' in the absence of disparity cues, (2) a loss of comitancy, i.e., alignment varies more with orbital position, (3) abnormal saccade yoking producing saccade disconjugacy, and (4) defects in prism-induced phoria adaptation. There was also a suggestion of a disturbance in the dynamic properties of disparity-induced vergence. These findings point to a role for the 'oculomotor' vermis in binocular aspects of the control of eye movements.

Original languageEnglish (US)
Pages (from-to)19-33
Number of pages15
JournalProgress in brain research
Volume142
DOIs
StatePublished - 2003

ASJC Scopus subject areas

  • Neuroscience(all)

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