Cerebellum and Oculomotor Control

D. S. Zee, M. Walker

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The cerebellum plays a key role in the 'on-line' generation and the long-term calibration of all types of eye movements. The flocculus and paraflocculus assure that images are held steady on the fovea: impaired gaze holding, spontaneous vertical nystagmus, impaired pursuit and abnormal amplitude, and direction of vestibulo-ocular reflexes are signs of lesions here. The nodulus and ventral uvula modulate the amplitude and the axis of eye rotation of the response to the low-frequency (sustained) components of head rotation: prolonged vestibular responses and periodic alternating nystagmus are signs of lesions here. The dorsal vermis and underlying posterior fastigial nuclei calibrate saccade amplitude and pursuit initiation. Saccadic dysmetria is the hallmark sign of lesions here. The cerebellum also assures that both static and dynamic ocular alignment is optimized for binocular foveal vision.

Original languageEnglish (US)
Title of host publicationEncyclopedia of Neuroscience
PublisherElsevier Ltd
Pages729-736
Number of pages8
ISBN (Print)9780080450469
DOIs
StatePublished - 2009

Keywords

  • Adaptation
  • Cerebellum
  • Eye movements
  • Fastigial nuclei
  • Flocculus
  • Integrator
  • Motor learning
  • Nystagmus
  • Paraflocculus
  • Pursuit
  • Saccades
  • Vergence
  • Vermis
  • Vestibular

ASJC Scopus subject areas

  • Neuroscience(all)

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