The Contributions of Both the Trichromatic and Opponent-Process Theories Can

Multiple Choice

The contributions of both the trichromatic and opponent-process theories can be summarized best by the following statement:

A) Trichromatic theory describes neuron activity occurring at all levels of the visual system.
B) Trichromatic theory describes neuron activity outside of the first level of the visual system.
C) Opponent-process theory describes neuron activity occurring outside of the first level of the visual system.
D) Opponent-process theory describes neuron activity occurring at all levels of the visual system