The trichromatic and opponent process theories of colour vision are not in conflict because each corresponds to

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The trichromatic theory explains how the photoreceptors in the retina (rods and cones) process different wavelengths of light, while the opponent process theory explains how the brain processes signals from these receptors into perceptual experiences of color. Therefore, the two theories are not in conflict but rather address different aspects of visual processing.

The Trichromatic and Opponent Process Theories of Colour Vision Are