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Title
  • en The vestibular-related frontal cortex and its role in smooth-pursuit eye movements and vestibular-pursuit interactions.
Creator
Accessrights open access
Subject
  • Other en Smooth pursuit
  • Other en vergence
  • Other en gaze velocity
  • Other en vestibulo-ocular reflex
  • Other en semi-circular canal
  • Other en otolith
  • Other en frontal eye fields
  • Other en supplementary eye fields
  • NDC 491.3
Description
  • Abstract en In order to see clearly when a target is moving slowly, primates with high acuity foveae use smooth-pursuit and vergence eye movements. The former rotates both eyes in the same direction to track target motion in frontal planes, while the latter rotates left and right eyes in opposite directions to track target motion in depth. Together, these two systems pursue targets precisely and maintain their images on the foveae of both eyes. During head movements, both systems must interact with the vestibular system to minimize slip of the retinal images. The primate frontal cortex contains two pursuit-related areas; the caudal part of the frontal eye fields (FEF) and supplementary eye fields (SEF). Evoked potential studies have demonstrated vestibular projections to both areas and pursuit neurons in both areas respond to vestibular stimulation. The majority of FEF pursuit neurons code parameters of pursuit such as pursuit and vergence eye velocity, gaze velocity, and retinal image motion for target velocity in frontal and depth planes. Moreover, vestibular inputs contribute to the predictive pursuit responses of FEF neurons. In contrast, the majority of SEF pursuit neurons do not code pursuit metrics and many SEF neurons are reported to be active in more complex tasks. These results suggest that FEF- and SEF-pursuit neurons are involved in different aspects of vestibular-pursuit interactions and that eye velocity coding of SEF pursuit neurons is specialized for the task condition.
Publisher en IOS Press
Date
    Issued2006
Language
  • eng
Resource Type journal article
Version Type AM
Identifier HDL http://hdl.handle.net/2115/14884
Relation
  • PMID 16917164
Journal
    • PISSN 0957-4271
      • en Journal of Vestibular Research
      • Volume Number16 Issue Number1-2 Page Start1 Page End22
File
Oaidate 2023-07-26