When All Three Cone Populations are Stimulated Equally, We Perceive

Question

When all three cone populations are stimulated equally, we perceive
A) red.
B) blue.
C) green.
D) white.
E) black.

Accepted Answer

When all three cone populations are stimulated equally, they result in the perception of white. This is because white light contains equal amounts of all wavelengths of the visible spectrum, and when all three types of cones are activated evenly, they combine to produce the sensation of white.