Depth Reduction Phenomenon in Stereopsis : Effect of Surface Overlap

This study investigates the depth reduction phenomenon in stereoscopic transparency stimuli, where perceived depth decreases despite constant binocular disparity and viewing distance. We explored the influence of overlap surfaces on depth perception. Experiment 1 confirmed depth reduction, with three-parallel-overlapping-transparent-stereoscopic-surfaces (POTS) stimuli showing less depth than two-POTS. Experiment 2 found no significant difference in perceived depth between stereoscopic transparency and stepwise stimuli, supporting the absence of the depth reduction phenomenon in stepwise stimuli. These findings contribute to understanding depth perception in stereoscopic stimuli, particularly the depth reduction phenomenon in stereoscopic transparency stimuli.