title: Lightness models, gradient illusions, and curl.
authors: L E
authors: LE
authors: Arend
authors: R
authors: R
authors: Goldstein
mesh_terms: D003118:Color Perception / Q000502:physiology*; D006801:Humans; D007088:Illusions / Q000502:physiology*; D008029:Lighting; D008297:Male; D008433:Mathematics; D008959:Models, Neurological; D009903:Optical Illusions / Q000502:physiology*; D012160:Retina / Q000502:physiology; D014794:Visual Fields