Red and green appear to be opposite colors because of the activity of ganglion cells that are excited by cones and inhibited by cones.
A)L; M
B)M; L
C)L; S and M
D)S; L and M

Question

Quizplus · Accepted Answer

Ganglion cells receive input from cones that are sensitive to long wavelengths (L) and cones that are sensitive to medium wavelengths (M). When red light (long wavelengths) is present, the L cones are stimulated and the M cones are inhibited. When green light (medium wavelengths) is present, the M cones are stimulated and the L cones are inhibited. This opposing activity creates the perception of red and green as opposite colors.

Red and Green Appear to Be Opposite Colors Because of the Activity