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A hierarchical model of binocular rivalry
1Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge 02139, USA.
Neural Computation
|July 9, 1998
Summary
Binocular rivalry, where eyes see different images, may stem from competing brain interpretations, not direct visual input competition. This model explains neural activity during perception changes.
Area of Science:
- Neuroscience
- Cognitive Science
- Vision Science
Background:
- Binocular rivalry involves alternating perceptions when eyes view different scenes.
- Evidence suggests similarities between binocular rivalry and other bistable percepts.
- Previous models proposed direct input competition as the mechanism.
Purpose of the Study:
- To model binocular rivalry based on competing cortical interpretations.
- To account for neurophysiological evidence of neuronal modulation during rivalry.
- To extend the model to a hierarchical framework.
Main Methods:
- Developed a computational model based on top-down cortical competition.
- Incorporated neurophysiological findings on binocular neuron activity.
- Extended the model to a hierarchical structure.
Main Results:
- The model supports the hypothesis of cortical competition driving rivalry.
- It explains why some neurons modulate with perception while others do not.
- Hierarchical extension addresses complex neural dynamics.
Conclusions:
- Binocular rivalry is likely driven by competing cortical representations.
- The model provides a framework for understanding bistable perception.
- Hierarchical processing is crucial for explaining neural correlates of rivalry.