title: Temporal integration of monocular images separated in time: stereopsis, stereoacuity, and binocular luster.
abstract: We evaluated stereopsis and binocular luster using electronically controlled shutter glasses with alternating monocular stimulation. In Experiment 1, we used the standard method for testing stereoacuity to obtain a gradual measure of stereopsis. Stereo thresholds decreased with increasing alternating frequency of two monocular half-images without a delay between them. Increasing delays led to increasing thresholds. In Experiment 2, we compared stereopsis resulting from two monocular half-images of a random-dot stereogram and binocular luster with respect to the minimum alternating frequency of the two half-images and the maximum interocular delay that were tolerated without a breakdown of the impression. Below 3 Hz, no stereopsis occurred. Binocular luster was observed only above 10 Hz. The mean threshold of interocular delay for detecting the global figure in a random-dot stereogram was about 51 msec, but for binocular luster it was about 20 msec. Overall, temporal integration was better for stereopsis than for binocular luster.
authors.affiliation: Faculty of Psychology, Philipps-Universität Marburg, Marburg, Germany. ludwigi@staff.uni-marburg.de
authors.forename: Ira
authors.initials: I
authors.lastname: Ludwig
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Pieper
authors.forename: Harald
authors.initials: H
authors.lastname: Lachnit
mesh_terms: D000328:Adult; D003118:Color Perception; D003867:Depth Perception; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010364:Pattern Recognition, Visual; D010775:Photic Stimulation; D011601:Psychophysics; D011930:Reaction Time; D012684:Sensory Thresholds; D015357:Vision Disparity; D015348:Vision, Binocular; D015349:Vision, Monocular; D014792:Visual Acuity