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More evidence for sensorimotor adaptation in color perception
Aline Bompas1, J Kevin O'Regan
1Laboratoire de Psychologie Expérimentale, CNRS, Université René Descartes, France. aline.bompas@tuebingen.mpg.de
Journal of Vision
|March 9, 2006
Summary
Sensorimotor adaptation can alter color perception by linking eye movements to color changes. This study demonstrates that adapting to red-green visual stimuli influences subsequent color judgments, suggesting sensorimotor mechanisms are key to color perception.
Area of Science:
- Neuroscience
- Perception Psychology
- Cognitive Science
Background:
- Sensorimotor adaptation typically affects spatial attributes like orientation and size.
- Existing research on sensorimotor adaptation primarily uses prism adaptation paradigms.
Purpose of the Study:
- To investigate sensorimotor adaptation for color perception.
- To explore the role of sensorimotor contingencies in color processing.
Main Methods:
- Participants underwent an adaptation phase involving eye movements (saccades) correlated with specific color changes (red-green).
- Following adaptation, participants judged the chromaticity of yellow patches presented on the screen.
- Control experiments were conducted with fixed eye positions to isolate the effect of eye movements.
Main Results:
- Sensorimotor adaptation to red-green stimuli shifted color perception, requiring adjustments in chromaticity for subjective equality.
- The observed adaptation effect was dependent on eye saccades, not on retinal location or eye position.
- No adaptation effect was found when eye movements were restricted, indicating the importance of sensorimotor contingencies.
Conclusions:
- Sensorimotor mechanisms play a significant role in color perception.
- Color perception is not solely based on retinal input but is modulated by motor actions and their sensory consequences.
- These findings support a sensorimotor theory of color perception.