The Veridicality of Color : A
نویسندگان
چکیده
Color is an inner, highly subjective experience only triggered by properties of light from the external world. Actual color perceptions are inextricably linked to (i) visual processing properties of observers that can vary greatly across individuals, and (ii) minor changes in viewing circumstances. Thus, it can be argued that color is not of this world, or, that color is not a veridical, or even an unbiased index of object properties. To illustrate this assertion we present empirical results on the visual processing of four individuals. All four of these individuals have excellent color perception (as shown by standardized color vision assessment procedures). Two of the individuals are considered standard “normal” trichromat observers, while the other two are “potential tetrachromat” observers – that is, observers with a genetic potential for an extra class of visual pigments used for color vision. By comparing such observers’ color perception performance, and their artistic uses of color, we illustrate how wide the definition of “normal”
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