527 Group â A tax-exempt group organized under section 527 of the Internal Revenue Code to raise money for political activities. These groups are typically parties, candidates, committees or associations organized for the purpose of influencing an issue, policy, appointment or election, be it federal, state or local.
Noun. 1. trichromacy-the normal ability to see colors. chromatic vision, color vision. visual modality, visual sense, vision, sight-the ability to see; the visual faculty.
Therefore, for visual processing in the eye (on the retina) trichromatic theory applies. Once the neural signal passes beyond the retina on its way to the brain, the nature of the cells change and, in fact, the cells respond in an opponent fashion, consistent with opponent process theory.