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Related Experiment Video

Updated: Oct 27, 2025

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Selective postsaccadic enhancement of motion perception.

Adela S Y Park1, Alexander C Schütz2

  • 1Experimental and Biological Psychology, University of Marburg, Marburg, Germany.

Vision Research
|July 19, 2021
PubMed
Summary
This summary is machine-generated.

Immediately after saccadic eye movements, motion perception is enhanced for detailed visual stimuli. This postsaccadic enhancement is linked to changes in how the brain processes spatial information and contrast.

Keywords:
Centre-surround antagonismMotion discriminationPostsaccadic enhancementSpatial suppression

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Area of Science:

  • Neuroscience
  • Vision Science
  • Perceptual Psychology

Background:

  • Saccadic eye movements significantly impact visual perception, suppressing contrast sensitivity during the movement.
  • Post-saccadic vision shows enhanced contrast sensitivity for specific stimuli and improved ocular following responses (OFR).
  • The neural basis of this postsaccadic enhancement in motion processing remains unclear.

Purpose of the Study:

  • To investigate if postsaccadic enhancement of motion perception is explained by alterations in center-surround antagonism within motion processing.
  • To determine the role of spatial summation and surround suppression in postsaccadic visual processing.

Main Methods:

  • Tested motion perception immediately after saccades, focusing on high spatial frequency stimuli.
  • Analyzed changes in spatial summation and contrast facilitation/inhibition.
  • Correlated findings with known postsaccadic enhancement of neural activity in primate motion areas.

Main Results:

  • Motion perception was selectively enhanced for high spatial frequency stimuli following saccades.
  • This enhancement correlated with shifts in spatial summation and suppression.
  • Evidence suggests postsaccadic changes in contrast processing contribute to the observed perceptual enhancement.

Conclusions:

  • Postsaccadic enhancement of motion perception is selective for high spatial frequency stimuli.
  • Changes in spatial and contrast processing mechanisms underlie this enhancement.
  • An antecedent saccade primes motion processing neural mechanisms for detailed visual input.