Binocular Rivalry between Complex Stimuli in Split-Brain Observers

Authors: O'Shea R.P.¹; Corballis P.M.²

Source: Brain and Mind, Volume 2, Number 1, April 2001 , pp. 151-160(10)

Publisher: Springer

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Abstract:

We investigated binocular rivalry in the two cerebral hemispheres of callosotomized (split-brain) observers. We found that rivalry occurs for complex stimuli in split-brain observers, and that it is similar in the two hemispheres. This poses difficulties for two theories of rivalry: (1) that rivalry occurs because of switching of activity between the two hemispheres, and (2) that rivalry is controlled by a structure in the right frontoparietal cortex. Instead, similar rivalry from the two hemispheres is consistent with a theory that its mechanism is low in the visual system, at which each hemisphere conducts a similar analysis of its half of visual space.

Keywords: binocular rivalry; corpus callosum; split brain

Language: English

Document Type: Regular paper

Affiliations: 1: Department of Psychology, University of Otago, P.O. Box 56, Dunedin, New Zealand 2: Center for Cognitive Neuroscience, Dartmouth College, Hanover, NH 03755, USA

Publication date: 2001-04-01