Wavelength discrimination for 1000-Td yellow lights was measured as a function of the wavelength of a 10-Td pre-adaptation field. Blue and red pre-adaptation fields impaired discrimination more than did violet or green fields.
Our fields appear to act at a site that differences the long- and middle-wave cone signals, but this does not correspond to the ‘red-green’ process of Opponent Colours Theory.
Mollon, J.D. and Cavonius, C.R., 1987. The chromatic antagonisms of opponent process theory are not the same as those revealed in studies of detection and discrimination. In Colour vision deficiencies VIII (pp. 473-483). Springer Netherlands.
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