Caloric vestibular stimulation reveals discrete neural mechanisms for coherence rivalry and eye rivalry: a meta-rivalry model
Article
Article Title | Caloric vestibular stimulation reveals discrete neural mechanisms for coherence rivalry and eye rivalry: a meta-rivalry model |
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ERA Journal ID | 16942 |
Article Category | Article |
Authors | Ngo, Trung T. (Author), Liu, Guang B. (Author), Tilley, Andrew J. (Author), Pettigrew, John D. (Author) and Miller, Steven M. (Author) |
Journal Title | Vision Research |
Journal Citation | 47 (21), pp. 2685-2699 |
Number of Pages | 15 |
Year | 2007 |
Publisher | Elsevier |
Place of Publication | United Kingdom/United States |
ISSN | 0042-6989 |
1878-5646 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.visres.2007.03.024 |
Web Address (URL) | http://www.elsevier.com/wps/find/journaldescription.cws_home/263/description#description |
Abstract | Binocular rivalry is an extraordinary visual phenomenon that has engaged investigators for centuries. Since its first report, there has been vigorous debate over how the brain achieves the perceptual alternations that occur when conflicting images are presented simultaneously, one to each eye. Opposing high-level/stimulus-representation models and low-level/eye-based models have been proposed to explain the phenomenon, recently merging into an amalgam view. Here, we provide evidence that during viewing of Dı´az-Caneja stimuli, coherence rivalry—in which aspects of each eye’s presented image are perceptually regrouped into rivalling coherent images—and eye rivalry operate via discrete neural mechanisms. We demonstrate that high-level brain activation by unilateral caloric vestibular stimulation shifts the predominance of perceived coherent images (coherence rivalry) but not half-field images (eye rivalry). This finding suggests that coherence rivalry (like conventional rivalry according to our previous studies) is mediated by interhemispheric switching at a high level, while eye rivalry is mediated by intrahemispheric mechanisms, most likely at a low level. Based on the present data, we further propose that Dı´az-Caneja stimuli induce ‘meta-rivalry’ whereby the discrete high- and low-level competitive processes themselves rival for visual consciousness. |
Keywords | binocular rivalry; bottom-up versus top-down processing; amalgam view; interocular grouping; multistability; coherence rivalry; caloric vestibular stimulation; interhemispheric switching; meta-rivalry; visual consciousness |
ANZSRC Field of Research 2020 | 320907. Sensory systems |
520203. Cognitive neuroscience | |
321204. Vision science | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Monash University |
Centre for Systems Biology | |
University of Queensland |
https://research.usq.edu.au/item/9y638/caloric-vestibular-stimulation-reveals-discrete-neural-mechanisms-for-coherence-rivalry-and-eye-rivalry-a-meta-rivalry-model
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