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Demonstrates additivity failures in color perception using a CFF technique, suggesting minor influence from opponent-color channels.
The validity of the heterochromatic additivity principle (Abney's Law) was examined using bichromatic combinations of test wavelengths adjusted to equal luminance by a CFF technique. Additivity failures qualitatively similar but smaller than those resulting from foveal threshold, incremental threshold, or direct brightness matching techniques were evident for a number of bichromatic combinations. These results suggest that the CFF response is influenced, to a small degree, by the activity of opponent‐color channels.
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Trick et al. (1980) studied this question.
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