Which theory states the eye has three receptors sensitive to red, green, and blue?

Which theory states the eye has three receptors sensitive to red, green, and blue?

• A. Opponent-Process Theory
• B. Trichromatic Theory Of Color Vision
• C. Monochromacy
• D. Color Constancy

Answer: (B)

Three types of cone receptors in the retina—sensitive to short (blue), medium (green), and long (red) wavelengths—provide the basis for color perception. The brain interprets color by comparing the relative activity of these three cones. For example, colors like yellow arise from strong signals in red and green cones with little blue. This process is captured by the Trichromatic Theory of Color Vision. Other theories describe later-stage processing rather than the initial detection. Opponent-process theory explains how colors are organized into opposing channels (red vs. green, blue vs. yellow) and accounts for afterimages; monochromacy refers to having only one type of cone (or none), leading to little or no color vision; color constancy concerns perceiving colors as stable under changing lighting.

Three types of cone receptors in the retina—sensitive to short (blue), medium (green), and long (red) wavelengths—provide the basis for color perception. The brain interprets color by comparing the relative activity of these three cones. For example, colors like yellow arise from strong signals in red and green cones with little blue. This process is captured by the Trichromatic Theory of Color Vision.

Other theories describe later-stage processing rather than the initial detection. Opponent-process theory explains how colors are organized into opposing channels (red vs. green, blue vs. yellow) and accounts for afterimages; monochromacy refers to having only one type of cone (or none), leading to little or no color vision; color constancy concerns perceiving colors as stable under changing lighting.