![]() In recent years neuroscientists have used neuroimaging techniques and single-cell recording techniques to identify neural events responsible for the perceptual dominance of a given image and for the perceptual alternations. Binocular rivalry is a visual phenomenon in which perception alternates between incompatible monocular images presented to the two eyes. Studying the underlying neural mechanisms of binocular rivalry is useful for understanding the mechanisms of interocular inhibition. Binocular rivalry has been extensively studied in the last century. Binocular rivalry is the phenomenon that when two incompatible images are simultaneously presented, one to each eye, the two images compete with each other to be the dominant percept. Very small differences between images, however, might yield singleness of vision and stereopsis. Binocular rivalry occurs between any stimuli that differ sufficiently, including simple stimuli like lines of different orientation and complex stimuli like different alphabetic letters or different pictures such as of a face and of a house. For example, the vertical lines may appear one at a time to obscure the horizontal lines from the left or from the right, like a traveling wave, switching slowly one image for the other. For example, if a set of vertical lines is presented to one eye, and a set of horizontal lines to the same region of the retina of the other, sometimes the vertical lines are seen with no trace of the horizontal lines, and sometimes the horizontal lines are seen with no trace of the vertical lines.Īt transitions, brief, unstable composites of the two images may be seen. When one image is presented to one eye and a very different image is presented to the other (also known as dichoptic presentation), instead of the two images being seen superimposed, one image is seen for a few moments, then the other, then the first, and so on, randomly for as long as one cares to look. 3D red cyan glasses are recommended to view this image correctly. If you view the image with red-cyan 3D glasses, the angled Warp and weft will alternate between the Red and the Blue lines. 12).First, EEG has been used to measure a neural correlate of the perceptual alternations during binocular rivalry when observers pay attention to the rival stimuli (). 3D red cyan glasses are recommended to view this image correctly. Converging experimental evidence has shown, however, that binocular rivalry also depends on attention (for a review, see ref. If you view the image with red-cyan 3D glasses, the text will alternate between Red and Blue. An image demonstrating binocular rivalry. Binocular rivalry is a phenomenon of visual perception in which perception alternates between different images presented to each eye.
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