Final answer:
The stimulation of all three types of cones—red, green, and blue—results in the perception of white. This is in line with the trichromatic theory of color vision, which explains how various colors are perceived by combinations of these cones' activities.
Step-by-step explanation:
When all three cone populations in the human eye are stimulated, one sees white. This is based on the trichromatic theory of color vision, which states that the thousands of hues that we can distinguish among are created by various combinations of stimulation of the three types of cones: red, green, and blue. When red, green, and blue cones are all stimulated equally, the brain perceives this as white light. This principle is also used in color television systems and is reflected in our understanding of color perception. Color vision is complex, but the basic idea of combining three primary colors to produce various hues is well established, although more sophisticated theories have expanded on this concept.