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Updated: Feb 4, 2026

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
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Optimal trans-saccadic integration relies on visual working memory.

Emma E M Stewart1, Alexander C Schütz1

  • 1Allgemeine und Biologische Psychologie, Philipps-Universität Marburg, Marburg, Germany.

Vision Research
|October 13, 2018
PubMed
Summary
This summary is machine-generated.

Visual working memory (VWM) is crucial for seamlessly integrating visual information across eye movements (saccades). This study found that impairing VWM significantly hinders this trans-saccadic integration process.

Keywords:
Eye movementSaccadeTrans-saccadic integrationWorking memory

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Area of Science:

  • Cognitive Neuroscience
  • Visual Perception
  • Human Vision

Background:

  • Saccadic eye movements shift gaze, moving objects from peripheral to foveal vision.
  • Trans-saccadic integration, combining visual information across saccades, occurs near-optimally, but its mechanisms are unclear.
  • Visual working memory (VWM) is hypothesized to support trans-saccadic integration by retaining pre-saccadic information.

Purpose of the Study:

  • To directly test if VWM is necessary for optimal trans-saccadic integration.
  • To investigate the role of VWM load on integrating visual stimuli with similar and dissimilar features across saccades.

Main Methods:

  • Participants performed a trans-saccadic integration task under varying VWM load conditions.
  • A concurrent memory task was introduced to manipulate VWM load during saccades.
  • Integration performance was assessed using feature-similar and feature-dissimilar stimuli.

Main Results:

  • Trans-saccadic integration performance was significantly impaired when participants performed an additional memory task.
  • The visual stimuli used for integration also affected performance on the concurrent memory task.
  • These findings indicate a shared resource or interaction between VWM and trans-saccadic integration.

Conclusions:

  • Visual working memory plays a critical role in supporting the optimal integration of visual information across saccadic eye movements.
  • The results suggest that VWM resources are utilized for comparing and integrating pre- and post-saccadic visual percepts.
  • Impairing VWM capacity directly impacts the ability to seamlessly perceive a continuous visual scene during naturalistic eye movements.