Abstract
Available evidence seems to indicate that illusion decrement represents reorganization of cognitive components involved in visual-geometric illusions. Observers viewed one of the two forms of the Mueller-Lyer illusion, containing differential opportunities for peripheral structural interactions, for a 10-min test session on each of 5 successive days. The magnitude of the distortion decreased to a different asymptotic level in each of the two configurations with the form, with more opportunity for structural interactions showing the higher asymptote. Thus, this asymptote probably represents the structural or physiological contribution to the illusory distortion.
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This research was supported in part by grants from the National Research Council of Canada (A9783) and the National Science Foundation (7418599).
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Girgus, J.S., Coren, S., Durant, M. et al. The assessment of components involved in illusion formation using a long-term decrement procedure. Perception & Psychophysics 18, 144–148 (1975). https://doi.org/10.3758/BF03204102
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DOI: https://doi.org/10.3758/BF03204102