title: Looking at two paintings at once: Luminance edges can gate colors.
abstract: Two paintings, O1 and O2, were split into their luminance (grayscale) components L1, L2 and their color components C1, C2. The two color components, C1, C2, were transparently superimposed. Adding the grayscale of the first painting (= C1 + C2 + L1) looked like the original O1, while adding the grayscale of the second painting (= C1 + C2 + L2) looked like the original O2.
  
  
  CONCLUSIONS
  the luminance contours selected or gated the congruent color contours and ignored non-congruent colors from the other painting.
authors.affiliation: Department of Psychology, UC San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA; e-mail:  sanstis@ucsd.edu.
authors.forename: Stuart
authors.initials: S
authors.lastname: Anstis
authors.forename: Mark
authors.initials: M
authors.lastname: Vergeer
authors.forename: Rob
authors.initials: R
authors.lastname: Van Lier
keywords: color vision; contour perception; filling-in