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Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
Published on: March 18, 2019
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Visual working memory modulates within-object metrics of saccade landing position
1Department of Psychology, University of Iowa, Iowa City, Iowa.
Annals of the New York Academy of Sciences
|February 17, 2015
Summary
Visual working memory (VWM) influences eye movements. When a color is remembered, saccade landing positions are biased toward matching object regions, demonstrating VWM
Area of Science:
- Cognitive Neuroscience
- Ophthalmology
- Psychology
Background:
- Visual working memory (VWM) is crucial for cognitive tasks.
- Oculomotor selection guides eye movements to relevant visual information.
- The interplay between VWM and oculomotor control is not fully understood.
Purpose of the Study:
- To investigate if visual working memory (VWM) biases oculomotor selection.
- To determine if saccade landing positions are influenced by matching features held in VWM.
- To explore how VWM modulates sensory representations for guiding eye movements.
Main Methods:
- Two experiments were conducted involving saccade tasks.
- Participants executed saccades to a target with two colored regions.
- A color was maintained in VWM, which either matched or did not match a target region.
Main Results:
- Rapidly generated saccades (latency < 150 ms) showed a bias towards object regions matching the VWM color.
- This bias was observed relative to a no-match baseline condition.
- Saccades to extended objects were sensitive to within-object salience differences.
Conclusions:
- VWM modulates early sensory representations to bias selection towards locations matching VWM content.
- This finding supports the hypothesis of VWM influencing oculomotor selection.
- Eye movements are sensitive to the integration of memory-based and sensory information.
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