According to the trichromatic theory, color vision is the product of opposing pairs of color receptors, red-green, blue-yellow, and black-white, and when one member of a color pairis stimulated, the other member is inhibited.

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The trichromatic theory explains color vision based on the activity of three types of cone receptors sensitive to red, green, and blue light, not opposing pairs. The opponent-process theory, however, involves opposing pairs of colors.

According to the Trichromatic Theory, Color Vision Is the Product