Fig. 1.

(A) Typical BR stimulus. (B) MBC phase-shift stereo/rivalry stimulus. The half-image with the disc grating is phase-shifted 45° relative to the surrounding background grating. With crossed fusion of the left and middle half-images, one perceives the grating within the disc as behind the surrounding grating. (C) The stimulus used in Experiment 1, where observers judged the relative depth between the upper and lower half-discs. With crossed fusion of the left and middle half-images, the grating within the disc is seen behind the surrounding grating (far condition) while the lower half-disc is seen in front of the upper half-disc. And by crossed fusion of the right and middle half-images, the entire disc grating is seen in front of the surrounding grating, with the upper half-disc being seen in front of the lower half-disc.