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Stereoscopic pair for uncrossed fusion. The right images are vertically magnified by 2% to create an invisible signal, EVM (eye of vertical magnification). See also Movie M1A and M1B. (A) Cylinder with ambiguous direction of rotation (as indicated by the double arrow). (B) Cylinder with added depth cues (horizontal disparity of dots and rectangle that occludes part of the back surface of the cylinder) that disambiguated rotation direction (indicated by the arrow).
