Mechanism for Voluntary Cancellation of the Vestibulo-ocular Reflex in Squirrel Monkeys That Is Not Related to Smooth Pursuit

Robert A. McCrea, Kathleen E. Cullen

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The vestibulo-ocular reflex (VOR) is reduced or cancelled by a smooth pursuit eye movement programmed to match the velocity of the moving target whenever there is an attempt made to follow a moving visual target by combining a smooth pursuit eye movement with a head movement generated in the direction of target movement. The objective of this study is to determine if there is a second mechanism that can cancel the VOR. The experiments in this study involved four squirrel monkeys that were prepared for chronic recording of eye movements. The monkeys were seated on a vestibular turntable with restrained heads. Their eye movements were recorded using magnetic search coil technique. Results showed that there is a cancellation of the vestibulo-ocular reflex generated by the sudden turntable jerks. There is also a cancellation of the vestibulo-ocular reflex produced by the unpredictable head movements.

Original languageEnglish (US)
Title of host publicationThe Head-Neck Sensory Motor System
PublisherOxford University Press
ISBN (Electronic)9780199847198
ISBN (Print)9780195068207
DOIs
StatePublished - Mar 22 2012
Externally publishedYes

Keywords

  • Coil technique
  • Eye movements
  • Squirrel monkeys
  • Velocity
  • Vestibulo-ocular reflex
  • Visual target

ASJC Scopus subject areas

  • Neuroscience(all)

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