Abstract
Opponent process theories claim that human colour vision is mediated by three channels: a luminance channel (ΔL/L + ΔM/M), a red-green channel (ΔL/L — ΔM/M) and a blue-yellow channel (ΔS/S — 0.5ΔL/L — 0.5ΔM/M). These suffice to explain the detection of stimuli but do not account for observed interactions between luminance and chromatic stimuli, particularly the facilitation of chromatic detection by the presence of luminance contrast. This paper reviews the models of facilitation, shows why the simple opponent process theory is unable to explain them, and suggests that these effects are due to a form of crosstalk between the detection channels. These interaction effects can be used to accurately parameterise the cone inputs to the detection channels, and this is done experimentally for the luminance channel.
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© 1993 Springer Science+Business Media Dordrecht
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McIlhagga, W., Cole, G.R. (1993). Characterization of colour detection channels by use of their interactions. In: Drum, B. (eds) Colour Vision Deficiencies XI. Documenta Ophthalmologica Proceedings Series, vol 56. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1856-9_41
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DOI: https://doi.org/10.1007/978-94-011-1856-9_41
Publisher Name: Springer, Dordrecht
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