The Young-Helmholtz trichromatic theory was not supported by a phenomenon which occurs if a stimulus is viewed steadily and is then withdrawn. This phenomenon is known as
A)an afterimage
B)temporary colour blindness
C)a subliminal stimulus
D)a dual stimulus

Question

Quizplus · Accepted Answer

The Young-Helmholtz trichromatic theory, which posits that the human eye has three types of receptors sensitive to red, green, and blue light, does not fully account for the occurrence of afterimages. Afterimages are visual illusions that appear after the original stimulus is removed, often in complementary colors, suggesting more complex processes in color perception than the trichromatic theory alone can explain.

The Young-Helmholtz Trichromatic Theory Was Not Supported by a Phenomenon