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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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Spatiotopic updating facilitates perception immediately after saccades
Jasper H Fabius1, Alessio Fracasso1,2,3, Stefan Van der Stigchel1
1Experimental Psychology, Helmholtz Institute, Utrecht University, Heidelberglaan 1, 3584 CS Utrecht, The Netherlands.
Scientific Reports
|October 1, 2016
Summary
Visual information is maintained across eye movements (saccades), allowing immediate postsaccadic perception. This suggests presaccadic data aids in anticipating and processing visual changes after saccades.
Area of Science:
- Neuroscience
- Cognitive Science
- Visual Perception
Background:
- Visual information is initially coded in retinotopic coordinates.
- Eye movements (saccades) present challenges for maintaining visual stability.
- The nature and availability of information accumulated across saccades are debated.
Purpose of the Study:
- To investigate the accumulation and spatiotopic updating of visual motion information across saccades.
- To determine the availability of presaccadic information for postsaccadic perception.
Main Methods:
- Utilized a motion illusion involving a rotating textured annulus and a subsequent motion transient.
- Manipulated rotation durations to observe effects on perceived motion after saccades.
- Examined how accumulated motion information is updated and utilized across saccades.
Main Results:
- Demonstrated that accumulated motion information is updated spatiotopically across saccades.
- Found that this accumulated information is readily available immediately postsaccade.
- Showed that presaccadic information biases postsaccadic perception.
Conclusions:
- Presaccadic visual information facilitates postsaccadic perception.
- Findings support a forward model of transsaccadic perception.
- Information processing across saccades occurs within the perisaccadic time window.
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