Figure 2.

Schematic of stereoscopic and bistable stimuli. (a) Schematic view-from-above for the four binocular depth perception tasks presented. (b) RDSs are rendered here for red–cyan anaglyph viewing. Dotted outlines illustrate the location of depth edges but were not present in the actual stimuli. (c) Schematic illustrations of the three perceptually bistable stimuli: (i) a rotating sphere defined by SFM; (ii) an apparent motion dot quartet; (iii) binocular rivalry between a face and moving dots. For each stimulus, there are two possible perceptual interpretations (indicated here in red and blue), which alternate over time: (i) leftward or rightward rotation; (ii) vertical or horizontal motion; (iii) left or right eye image.