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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
The fate of object features during perisaccadic mislocalization
Markus Lappe1, Simone Kuhlmann, Britta Oerke
1Westfälische Wilhelms-Universität, Münster, Germany. mlappe@psy.uni-muenster.de
Journal of Vision
|January 11, 2007
Summary
Perisaccadic mislocalization compresses objects toward the saccade target but preserves their color and shape. Competing features remain distinguishable, influencing visual awareness and object perception.
Area of Science:
- Neuroscience
- Cognitive Science
- Visual Perception
Background:
- During saccades, visual objects can be mislocalized.
- Perisaccadic processing involves complex cortical interactions.
- Understanding feature perception during saccades is crucial.
Purpose of the Study:
- Investigate the perception of features in mislocalized objects.
- Clarify how color and shape are processed during saccadic eye movements.
- Determine the stage of visual processing for perisaccadic mislocalization.
Main Methods:
- Studied perception of mislocalized objects before, during, and after saccades.
- Presented multiple objects of varying colors and shapes.
- Analyzed feature distinguishability and visibility at the mislocalized position.
Main Results:
- Color attributes remain distinguishable even when objects merge positionally.
- Color features compete for visual awareness when compressed.
- Mislocalized objects on same-colored backgrounds remain visible, with shape discernible.
- Objects become invisible if a larger object occupies the mislocalized space.
Conclusions:
- Perisaccadic mislocalization affects object position but not necessarily other features.
- Mislocalization may occur in parallel with feature processing or at late visual stages.
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