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Related Concept Videos

Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

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Related Experiment Video

Updated: Jun 29, 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

How does saccade adaptation affect visual perception?

Teresa D Hernandez1, Carmel A Levitan, Martin S Banks

  • 1Vision Science Group, School of Optometry, University of California, Berkeley, CA, USA. tere@mit.edu

Journal of Vision
|October 4, 2008
PubMed
Summary
This summary is machine-generated.

Saccade adaptation primarily alters the sensory-motor transform (SMT), not retinal signals. Eye position estimates adapt inversely to SMT changes, influencing perceived direction, especially in saccade lengthening.

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Last Updated: Jun 29, 2026

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

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Published on: March 18, 2019

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Published on: April 24, 2017

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Area of Science:

  • Neuroscience
  • Ophthalmology
  • Motor Control

Background:

  • Saccades are rapid eye movements guided by retinal location, sensory-motor transforms (SMT), and eye position estimates.
  • Understanding how saccade adaptation affects these signals is crucial for visual perception.

Purpose of the Study:

  • To investigate the impact of saccade amplitude adaptation on perceived visual direction.
  • To differentiate the contributions of retinal and extra-retinal signals to saccade adaptation.

Main Methods:

  • Subjects performed flashed-pointing and sustained-pointing tasks involving double-step target displacements.
  • Saccade amplitude was adapted through shortening and lengthening protocols.
  • Hand-pointing accuracy to flashed and final target positions was analyzed.

Main Results:

  • Saccade-shortening adaptation mainly involved changes in the SMT.
  • Saccade-lengthening adaptation involved both SMT changes (2/3) and retinal signal changes (1/3).
  • Eye position estimates adapted inversely to SMT changes.

Conclusions:

  • Saccade adaptation's effect on perceived direction is predominantly driven by extra-retinal factors.
  • A minor retinal component contributes to perceived direction changes during saccade lengthening.