title: Role of mutual inhibition in binocular rivalry.
abstract: Binocular rivalry is a phenomenon that occurs when a different image is presented to each eye. The observer generally perceives just one image at a time, with perceptual switches occurring every few seconds. A natural assumption is that this perceptual mutual exclusivity is achieved via mutual inhibition between populations of neurons that encode for either percept. Theoretical models that incorporate mutual inhibition have been largely successful at capturing experimental features of rivalry, including Levelt's propositions, which characterize perceptual dominance durations as a function of image contrasts. However, basic mutual inhibition models do not fully comply with Levelt's fourth proposition, which states that percepts alternate faster as the stimulus contrasts to both eyes are increased simultaneously. This theory-experiment discrepancy has been taken as evidence against the role of mutual inhibition for binocular rivalry. Here, we show how various biophysically plausible modifications to mutual inhibition models can resolve this problem.
authors.affiliation: Laboratory of Biological Modeling, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA.
authors.forename: Jeffrey
authors.initials: J
authors.lastname: Seely
authors.forename: Carson C
authors.initials: CC
authors.lastname: Chow
mesh_terms: D000818:Animals; D055592:Biophysical Phenomena / Q000502:physiology; D023882:Dominance, Ocular / Q000502:physiology*; D004735:Energy Transfer / Q000502:physiology; D006801:Humans; D008959:Models, Neurological; D009433:Neural Inhibition / Q000502:physiology*; D010507:Periodicity; D015357:Vision Disparity / Q000502:physiology; D015348:Vision, Binocular / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*