According to the Trichromatic (Young-Helmholtz) Theory, We Perceive Green When

Multiple Choice

According to the trichromatic (Young-Helmholtz) theory, we perceive green when

A) cones fire impulses at an intermediate frequency.
B) cones fire impulses at an intermediate velocity.
C) cones in the center of the retina are more active than those in the periphery.
D) the medium-wavelength cones are more active than other cones.