title: A new set of illusions--the dynamic luminance-gradient illusion and the breathing light illusion.
abstract: A novel set of illusions that break brightness constancy and size constancy at the same time is reported. The illusions occur when observers move towards or away from these patterns. Many variations of these phenomena and a possible explanation are discussed.
authors.affiliation: Department of Psychology, Boston University, MA 02215, USA. simone.gori@unipd.it
authors.forename: Simone
authors.initials: S
authors.lastname: Gori
authors.forename: D Alan
authors.initials: DA
authors.lastname: Stubbs
mesh_terms: D000328:Adult; D000368:Aged; D006801:Humans; D008029:Lighting; D008875:Middle Aged; D009038:Motion; D009903:Optical Illusions / Q000502:physiology*; D012858:Size Perception / Q000502:physiology; D014796:Visual Perception / Q000502:physiology*