Abstract
Three experiments investigated the frequency of a monocular, partial binocular, or nearly total binocular report of dichoptically presented stimuli in a line rivalry paradigm. The consistently important variable was the duration of the presentation time of the stimuli, which ranged from 50 to 1,100 msec, with each experiment covering only a portion of these times. Variations in equipment, instructions, response mode, light intensity, and position in the visual field were introduced. The main result was a report of fusion of the binocular inputs, with little or no suppression for about 40% to about 80% of the foveal presentations of 100 msec or less, the percentage varying over the three experiments. Partial fusion (some, but not all, lines crossed) was indicated in another 40% or more of the reports. Lateral positioning of the stimuli 6 deg from the fixation point, but not at 3 deg or less, resulted mainly in reports of monocular inputs. The possibility, and serious implication for studies of rivalry phenomena, of range effects (Poulton) from the within-subjects variation of duration of stimuli was noted.
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Bechtoldt, H. P., & Colliver, J. D., Jr. Dominance of the temporal visual field in letter and line rivalry. Psychonomic Society report, St. Louis, Missouri, October 31, 1968.
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Anderson, J.D., Bechtoldt, H.P. & Dunlap, G.L. Binocular integration in line rivalry. Bull. Psychon. Soc. 11, 399–402 (1978). https://doi.org/10.3758/BF03336866
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DOI: https://doi.org/10.3758/BF03336866