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Judgments by monkeys of apparent depth in dynamic random-dot stereograms
M L Crawford1, G K von Noorden, R S Harwerth
1Department of Ophthalmology and Visual Science, Medical School, University of Texas at Houston 77025, USA. crawford@nba129.med.uth.tmc.edu
Behavioural Brain Research
|September 1, 1996
Abstract:
Young macaques discriminated apparent depths of targets embedded in dynamic random dot stereograms; a test of stereopsis. In a 'same/different' paradigm, the discrimination took longer if the pair of stimuli appeared to be in same depth plane, than when they appeared to be located in a different depth plane. The decision time was an inverse function of the disparity difference. Apparent depth discrimination performance decreased as a function of disparity, with no differences in judgments regarding crossed or uncrossed disparities.