Abstract
The McCollough effect, a pattern-specific complementary hue aftereffect, has usually been demonstrated with horizontal and vertical adapting and test patterns. The present study measured the strength of the effect produced by adapting patterns of various angular separations. The effect decreased with decreasing angular separations until it was minimal at 11 deg of separation. The results are considered to be consistent with an edge-detector interpretation of this aftereffect. With vertical and horizontal adapting patterns, the reddish aftereffect was 17% and the greenish aftereffect 9%of colorimetric purity.
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Research conducted as part of the requirements of the PhD degree at The University of Michigan and with support of funds from NIMH Fellowships 1-F1-MH-29,060-01 and 5-F1-MH-29,060-02 and a NSF summer traineeship.
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Fidell, L.S. Orientation specificity in chromatic adaptation of human “edge-detectors”. Perception & Psychophysics 8, 235–237 (1970). https://doi.org/10.3758/BF03210212
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DOI: https://doi.org/10.3758/BF03210212