Red - green opponent spectral sensitivity: disparity between cancellation and direct matching methods.
The spectral sensitivity at the opponent stage of the visual system is traditionally measured by a hue-cancellation procedure. Comparison with a direct hue-matching method shows that cancellation overestimates short-wavelength sensitivity by as much as a factor of 30. The observation implies that different mechanisms control the perception of short-wavelength and long-wavelength redness.
Ingling
C R
CR
Russell
P W
PW
Rea
M S
MS
Tsou
B H
BH