The biological basis of the experience and categorization of colour

• DOI: 10.1111/ejn.14557
• Publication Date: 2019-08-22T21:38:59Z
• Authors: Semir Zeki; Alexandre Javier; Dimitris Mylonas
• Keywords: Hue

Abstract We used the Land Colour Mondrian experiments in a Bayesian context to test degree which subjects vary categorizing colour of different patches, when each patch is made reflect light identical wavelength‐energy composition. The brain uses ratio‐taking mechanism determine ratio every waveband reflected from surface and its surrounds. Our (Bayesian) hypothesis was that this similar all humans therefore leads constant categorization colours differs little between them. similarly categorized are initial priors, with hues attached Twenty ethnic cultural backgrounds, for but one whom English not primary language, viewed eight patches two displays; patch, viewed, ratios long‐, middle‐ short‐wave light. Subjects were asked match Munsell chip coming closest without using language. In terms hue, there less variability matching warm than cool ones. categorization, overall. take lack significant matches as pointer computational mechanisms being employed perceive colours, thus permitting them assume their has universal agreement assent.