title: Early correlates of visual awareness following orientation and colour rivalry.
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.
authors: Institute of Psychology I, Leipzig University, Seeburgstr. 14-20, 04103 Leipzig, Germany.
authors: Sandra
authors: S
authors: Veser
authors: Robert P
authors: RP
authors: O'Shea
authors: Erich
authors: E
authors: Schröger
authors: Nelson J
authors: NJ
authors: Trujillo-Barreto
authors: Urte
authors: U
authors: Roeber
mesh_terms: D000293:Adolescent; D000328:Adult; D001364:Awareness / Q000502:physiology*; D003118:Color Perception / Q000502:physiology*; D023882:Dominance, Ocular / Q000502:physiology; D005074:Evoked Potentials, Visual / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D009949:Orientation; D010775:Photic Stimulation / Q000379:methods; D015357:Vision Disparity / Q000502:physiology*; D015348:Vision, Binocular / Q000502:physiology