While the trichromatic theory of colour perception was first formulated in the 1800s, research in the 1960s suggested that there were ________ kinds of cones and that each was sensitive to either ________.

Question

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Research in the 1960s suggested that there were three kinds of cones and that each was sensitive to either red, green, or blue. This supports the trichromatic theory of color perception, which states that the human eye has three types of color receptors, or cones, that are sensitive to these colors and can combine to create the perception of other colors.

While the Trichromatic Theory of Colour Perception Was First Formulated