Variegated color sensations from rod-cone interactions: flicker-fusion experiments.
Multicolored images were produced by the combination of two different color-separation images, one illuminated with 656 nm light and the other illuminated with 500 nm light. Flicker-fusion frequency measurements were used to identify the conditions in which the 500 nm light was below cone threshold. Under those conditions the multicolored images were shown to be generated by rod and long-wave cone interactions.
D003118:Color Perception; D005425:Flicker Fusion; D006801:Humans; D008722:Methods; D010786:Photoreceptor Cells / Q000502:physiology*