THEORIES ON VISUAL PERCEPTION

• Coding Color

  Trichromacy - suggests that

  human color vision is based on

  our having three (tri) different

  color photopigments.
• Opponent Process Theory – proposes that one member of the color pair suppresses the other color. For example, we do see yellowish-greens and reddish-yellows, but we never see reddish-green or yellowish-blue color hues.
• Colorblindness - Occasional errors occur in the chromosomes that carry the genes that encode the cone photopigments. As a result, individuals with these genes show several kinds of atypical responses to color, known as colorblindness.
• Dichromacy - having eyes that contain two different cone photopigments.
• Monochromacy - the ability to see in black and white only
• Anomalous Trichromacy - a condition characterized by having three cone photopigments that respond to slightly different wavelengths than normal.
• Tetrachromat - an organism possessing four cone photopigments.