title: Still motion? Motion illusions and luminance contrast.
abstract: The influence of different luminance contrasts and equiluminance on illusory motion in four inducing patterns was studied: enigma, rotating snakes, pinna, and rotating-tilted-lines. At high luminance contrast the Pinna and the rotating-tilted-lines illusions are significantly stronger than at low luminance contrast, whereas the Enigma and Rotating Snakes illusions are stronger at low luminance contrast. At equiluminance along the L-M axis the strength of all illusions is greatly reduced. Data suggest that luminance contrast constitutes one important factor for their occurrence.
authors.affiliation: Experimental Psychology and Cognitive Science, Justus Liebig University, Otto-Behaghel-Strasse 10F, 35394 Giessen, Germany. kai.hamburger@psychol.uni-giessen.de
authors.forename: Kai
authors.initials: K
authors.lastname: Hamburger
mesh_terms: D015350:Contrast Sensitivity; D006801:Humans; D009038:Motion; D009039:Motion Perception; D009903:Optical Illusions; D010775:Photic Stimulation