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[Control of visual exploration: anatomic and physiologic data].

F Mauguiere

    Journal Francais D'Ophtalmologie
    |January 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

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    Saccadic eye movements, crucial for exploring visual space, are controlled by a network including the superior colliculus, frontal, parietal, and cingulate cortices. This network ensures precise gaze control and is essential for spatial awareness.

    Area of Science:

    • Neuroscience
    • Ophthalmology
    • Cognitive Science

    Context:

    • Saccadic eye movements are essential for visual exploration.
    • Early theories attributed control to the frontal eye field.
    • Recent research implicates a broader network.

    Purpose:

    • To elucidate the neural circuitry controlling saccadic eye movements.
    • To identify key brain structures involved in gaze control.
    • To understand the mechanisms underlying spatial neglect.

    Summary:

    • Sensori-motor processing for saccades occurs in the superior colliculus, prearcuate frontal, and posterior parietal cortices.
    • Motivation for eye movements involves the cingulate gyrus.
    • Lesions in these areas cause spatial neglect, with cortical/thalamic lesions having a more pronounced effect than collicular lesions.

    Related Experiment Videos

  • A cortico-thalamo-cortical circuit involving the medial pulvinar facilitates this network.

    • Impact:

    • Identifies a distributed neural network for gaze control.
    • Provides insights into the neurobiological basis of spatial neglect.
    • Highlights the interconnectedness of cortical, thalamic, and subthalamic structures in visual processing.