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Updated: Jul 22, 2026
09:47
A Method to Quantify Visual Information Processing in Children Using Eye Tracking
Published on: July 9, 2016
Processing spatial information in the sensorimotor branch of the visual system.
B Bridgeman1, A Gemmer, T Forsman
1Department of Psychology, University of California, Santa Cruz, CA 95064, USA. bruceb@cats.ucsc.edu
Vision Research
|December 15, 2000
Summary
Visual space perception involves distinct cognitive and sensorimotor representations. The Roelofs effect reveals these differences, impacting perception but not immediate visually guided actions.
Area of Science:
- Psychology
- Cognitive Science
- Neuroscience
Background:
- Human visual perception and action rely on distinct spatial representations.
- The Roelofs effect, where a frame shifts perceived target location, has been used to probe these representations.
Purpose of the Study:
- To differentiate between cognitive and sensorimotor representations of visual space.
- To investigate the temporal dynamics and limitations of sensorimotor memory.
Main Methods:
- Utilizing the Roelofs effect with both verbal (cognitive) and motor (sensorimotor) measures.
- Introducing a 2-second response delay to assess motor memory limitations.
- Employing a choice-reaction task with identical targets to isolate sensorimotor control.
Main Results:
- The Roelofs effect influenced cognitive measures but not immediate sensorimotor actions.
- A response delay induced the Roelofs effect in motor responses, indicating limited motor memory.
- Motor error was independent of reaction time.
- Choice-based motor tasks did not show the Roelofs effect, suggesting sensorimotor autonomy.
Conclusions:
- Cognitive and sensorimotor spatial representations are dissociable.
- Sensorimotor control exhibits rapid, independent spatial processing, even when initiated by cognitive choice.
- Motor memory has temporal limitations that can be probed using spatial illusions like the Roelofs effect.
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