Early correlates of visual awareness following orientation and colour rivalry

Vision Research
Sandra VeserU Roeber

Abstract

Binocular rivalry occurs when dissimilar images are presented to corresponding retinal regions of the two eyes: visibility alternates irregularly between the two images, interspersed by brief transitions when parts of both may be visible. We measured event-related potentials (ERPs) following binocular rivalry by changing the stimulus viewed by one eye to be identical to that in the other eye, eliciting binocular fusion. Because of the rivalry, observers either saw the change, when it happened to the visible stimulus, or did not see the change, when it happened to the invisible stimulus. The earliest ERP differences between visible and invisible changes occurred after about 100 ms (P1) when the rivalry was between stimuli differing in orientation, and after about 200 ms (N1) when the rivalry was between stimuli differing in colour. These differences originated from ventro-lateral temporal and prefrontal areas. We conclude that the rivalling stimulus property influences the timing of modulation of correlates of visual awareness in a property-independent cortical network.

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Citations

Jan 19, 2012·Advances in Cognitive Psychology·Bruno G Breitmeyer, Evelina Tapia
Dec 17, 2009·Neuroscience and Biobehavioral Reviews·Mika Koivisto, Antti Revonsuo
Sep 27, 2018·Frontiers in Human Neuroscience·Gonzalo Boncompte, Diego Cosmelli
Dec 23, 2020·Brain Sciences·Maria Teresa TuranoMaria Pia Viggiano

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