Interactions between global motion and local binocular rivalry. 1998

D Alais, and R Blake
Vanderbilt Vision Research Center, Vanderbilt University, Nashville, TN 37240, USA. alaisd@ctrvax.vanderbilt.edu

Binocular rivalry is thought to arise from a low-level cortical site. Experiment 1 evaluates this claim with respect to local and global motion processing by using a multiple-aperture motion stimulus and measuring the predominance of global coherence while one of the component gratings is engaged in rivalry. Results show that rivalry suppression of the component grating precludes global coherence. Presumable, suppression prevents the component motion signal from advancing to higher-level global motion areas, suggesting rivalry occurs between local and global motion processing. However, feedback from higher-level mechanisms might exert an influence on binocular rivalry and thus Experiment 2 measures how the predominance of a local target engaged in binocular rivalry with a competing local stimulus is affected when the target forms part of a globally coherent motion stimulus. The augmented level of target predominance during global motion relative to local motion indicates that higher-level motion mechanisms can feedback and influence the binocular rivalry process. Together, these data imply a looping hierarchy of motion processing stages, with rivalry suppression transpiring at an intermediate level and subject to feedback from higher-level motion areas.

UI MeSH Term Description Entries
D008297 Male Males
D009039 Motion Perception The real or apparent movement of objects through the visual field. Movement Perception,Perception, Motion,Perception, Movement
D011601 Psychophysics The science dealing with the correlation of the physical characteristics of a stimulus, e.g., frequency or intensity, with the response to the stimulus, in order to assess the psychologic factors involved in the relationship. Psychophysic
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014793 Visual Cortex Area of the OCCIPITAL LOBE concerned with the processing of visual information relayed via VISUAL PATHWAYS. Area V2,Area V3,Area V4,Area V5,Associative Visual Cortex,Brodmann Area 18,Brodmann Area 19,Brodmann's Area 18,Brodmann's Area 19,Cortical Area V2,Cortical Area V3,Cortical Area V4,Cortical Area V5,Secondary Visual Cortex,Visual Cortex Secondary,Visual Cortex V2,Visual Cortex V3,Visual Cortex V3, V4, V5,Visual Cortex V4,Visual Cortex V5,Visual Cortex, Associative,Visual Motion Area,Extrastriate Cortex,Area 18, Brodmann,Area 18, Brodmann's,Area 19, Brodmann,Area 19, Brodmann's,Area V2, Cortical,Area V3, Cortical,Area V4, Cortical,Area V5, Cortical,Area, Visual Motion,Associative Visual Cortices,Brodmanns Area 18,Brodmanns Area 19,Cortex Secondary, Visual,Cortex V2, Visual,Cortex V3, Visual,Cortex, Associative Visual,Cortex, Extrastriate,Cortex, Secondary Visual,Cortex, Visual,Cortical Area V3s,Extrastriate Cortices,Secondary Visual Cortices,V3, Cortical Area,V3, Visual Cortex,V4, Area,V4, Cortical Area,V5, Area,V5, Cortical Area,V5, Visual Cortex,Visual Cortex Secondaries,Visual Cortex, Secondary,Visual Motion Areas
D015348 Vision, Binocular The blending of separate images seen by each eye into one composite image. Binocular Vision
D015357 Vision Disparity The difference between two images on the retina when looking at a visual stimulus. This occurs since the two retinas do not have the same view of the stimulus because of the location of our eyes. Thus the left eye does not get exactly the same view as the right eye. Binocular Disparity,Fixation Disparity,Ocular Disparity,Parallax, Ocular,Retinal Disparity,Visual Disparity,Binocular Disparities,Disparities, Binocular,Disparities, Fixation,Disparities, Ocular,Disparities, Retinal,Disparities, Vision,Disparities, Visual,Disparity, Binocular,Disparity, Fixation,Disparity, Ocular,Disparity, Retinal,Disparity, Vision,Disparity, Visual,Fixation Disparities,Ocular Disparities,Ocular Parallax,Retinal Disparities,Vision Disparities,Visual Disparities

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