Abstract
IF two gratings with the same sinusoidal luminance profile, one vertically orientated and one horizontally orientated, are imaged by means of two projectors on a white screen, the appearance continuously changes. First one grating is seen clearly, then the other; in other words, the gratings are seen to alternate or rival. There are periods when both gratings are seen together, but there are never periods when both disappear1.
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RAUSCHECKER, J., CAMPBELL, F. & ATKINSON, J. Colour Opponent Neurones in the Human Visual System. Nature 245, 42–43 (1973). https://doi.org/10.1038/245042a0
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DOI: https://doi.org/10.1038/245042a0
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