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Effects of saccades on visual processing in primate MSTd.

Shaun L Cloherty1, Michael J Mustari, Marcello G P Rosa

  • 1Division of Biomedical Science and Biochemistry and ARC Centre of Excellence in Vision Science, Research School of Biology, Australian National University, Canberra, ACT 2601, Australia.

Vision Research
|August 25, 2010
PubMed
Summary
This summary is machine-generated.

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Primates suppress visual perception during saccades (rapid eye movements) by altering neural activity in the MSTd brain region. This neural modulation helps prevent perception of motion during eye shifts.

Area of Science:

  • Neuroscience
  • Primate Vision
  • Sensory Perception

Background:

  • Primates execute frequent saccades for visual surveying.
  • Saccades cause rapid retinal image motion, yet this is not perceived.

Purpose of the Study:

  • Investigate saccade-related neural activity changes in the dorsal medial superior temporal area (MSTd).
  • Understand how neural activity modulation affects visual perception during saccades.

Main Methods:

  • Recorded neural activity in the MSTd of alert macaque monkeys.
  • Analyzed spontaneous and evoked neural responses around saccade events.

Main Results:

  • MSTd neuron spontaneous activity is modulated by saccades, with suppression or enhancement.

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Last Updated: Jun 9, 2026

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Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
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  • Visual responses to stimuli are uniformly suppressed around saccades and enhanced afterward.

    • Conclusions:

    • Peri-saccadic neural modulation likely reduces the detectability of stimuli during eye movements.
    • This mechanism enhances perceptual awareness of the visual environment between saccades.