TEMPORAL INTEGRATION DIFFERENCES BETWEEN CROSSED AND UNCROSSED STEREOSCOPIC MECHANISMS

In this study, we investigated temporal integration of disparity infor mation for crossed and uncrossed stereopsis. Across three experiments, exposure duration thresholds were measured for stereoscopic stimuli c reated from dynamic random-dot stereograms. In Experiment 1, an invest igation of dis parity detection showed that detection thresholds were equal for the crossed and uncrossed directions. In Experiment 2, an ex amination of duration limits for depth perception showed that critical durations were lower, and depth more veridical, for crossed depth tha n for uncrossed depth. In Experiment 3, an investigation of depth disc rimination revealed that discrimination thresholds were lower for cros sed depth than for uncrossed depth. These results suggest that crossed and uncrossed mechanisms differ in terms of their temporal integratio n properties at processing levels involving the computation and discri mination of depth.