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Related Experiment Videos

Cortical control of saccades

B Gaymard1, C J Ploner, S Rivaud

  • 1INSERM 289, Hôpital de la Salpêtrière, Paris, France. gaymard@ccr.jussieu.fr

Experimental Brain Research
|December 3, 1998
PubMed
Summary

Saccadic eye movements are orchestrated by a network of brain regions, including the parietal eye field (PEF) for visuospatial integration and the frontal eye field (FEF) for purposeful saccades. These areas, along with others, contribute to precise eye control.

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Area of Science:

  • Neuroscience
  • Oculomotor Research
  • Cognitive Neuroscience

Background:

  • Saccadic eye movements are crucial for visual perception and are controlled by a complex cortical network.
  • Accurate localization of these oculomotor areas has been achieved through clinical and experimental studies.
  • Understanding the specific roles of each area is key to comprehending saccade control.

Purpose of the Study:

  • To elucidate the distinct functions of key cortical oculomotor areas involved in saccadic eye movements.
  • To detail the roles of the parietal eye field (PEF), frontal eye field (FEF), and supplementary eye field (SEF).
  • To explore the contributions of the cingulate eye field (CEF) and dorsolateral prefrontal cortex (dlPFC) to saccade control.

Main Methods:

  • Review of clinical and experimental studies on saccadic eye movements.

Related Experiment Videos

  • Localization of oculomotor control areas within the cerebral cortex.
  • Analysis of functional roles based on lesion and activation studies.

    • Main Results:

    • The parietal eye field (PEF) is involved in visuospatial integration and reflexive saccade triggering.
    • The frontal eye field (FEF) plays a role in the preparation and triggering of purposive saccades.
    • The supplementary eye field (SEF) is implicated in temporal control of saccade sequences and eye-hand coordination.
    • The cingulate eye field (CEF) may modulate voluntary saccades based on motivation.
    • The dorsolateral prefrontal cortex (dlPFC) is involved in inhibiting reflexive saccades and maintaining visual short-term memory.

    Conclusions:

    • The cortical network for saccadic eye movements comprises specialized areas with distinct functions.
    • Integration of information from PEF, FEF, SEF, CEF, and dlPFC enables sophisticated eye movement control.
    • Further research can build upon this understanding for neurological and cognitive applications.