What Is the Hue of Rod Vision?

摘要

Textbooks say rod vision is colorless. However, evidence that rod signals influence hue comes from several lines of psychophysical studies, including scotopic color contrast, color matching, hue scaling, and unique-hue loci. Some widely cited early studies suggested that there is a Single rod hue, which is blue. Other studies have suggested That various other hues, or even all hues, can be associated With rod stimulation. This article presents a conceptual Framework that helps reconcile many of these findings and That involves two unifying generalizations.