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Related Experiment Video

Updated: May 21, 2026

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
06:46

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

Published on: March 18, 2019

Perisaccadic compression in two-saccade sequences.

Louisa Lavergne1, Karine Doré-Mazars, Markus Lappe

  • 1Centre de Recherche Cerveau et Cognition, UMR5549, Université Paul Sabatier, CHU Purpan, Toulouse, France; Centre National de la Recherche Scientifique, France. louisa.lavergne@gmail.com

Journal of Vision
|June 6, 2012
PubMed
Summary
This summary is machine-generated.

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Perisaccadic compression, a visual localization bias, is influenced by future saccade planning. Motor planning signals, not execution feedback, likely cause this effect during sequential eye movements.

Area of Science:

  • Cognitive Neuroscience
  • Oculomotor Research
  • Visual Perception

Background:

  • Perisaccadic compression causes visual localization biases toward saccade endpoints.
  • This phenomenon is linked to transsaccadic reorganization and motor signal interference.
  • Previous studies focused only on single saccades, leaving sequence effects unexplored.

Purpose of the Study:

  • To investigate how saccade sequence programming affects localization judgments of briefly flashed stimuli.
  • To determine if planning multiple saccades influences perisaccadic compression.
  • To differentiate the roles of motor planning versus execution feedback in perisaccadic compression.

Main Methods:

  • Participants performed eye movements to stationary targets, inducing single or two-saccade sequences.

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Related Experiment Videos

Last Updated: May 21, 2026

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
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  • A brief bar stimulus was flashed around saccade onset.
  • Localization judgments of the flashed stimulus were recorded for different saccade conditions.

    • Main Results:

    • Localization judgments around the first saccade in a sequence were biased toward an intermediate position.
    • This intermediate bias reflected the planned endpoint of the second saccade.
    • The effect was observed across all two-saccade sequence conditions.

    Conclusions:

    • Parallel planning of subsequent saccades influences perisaccadic compression.
    • Motor planning signals, rather than motor execution feedback, are the primary drivers of perisaccadic compression.
    • This finding advances our understanding of oculomotor control and visual-spatial integration.