Orientation misperceptions induced by contrast polarity: Comment on 'Contrast polarities determine the direction of Cafe Wall tilts' by Akiyoshi Kitaoka, Baingio Pinna, and Gavin Brelstaff (2004)

摘要

According to Kitaoka et al (2004, Perception 33 11-20), the Cafe Wall illusion can be reduced to misalignment effects produced locally by a large shape on a line passing nearby I demonstrate here that the interacting units are edges and not whole shapes, and that the source of the illusion does not consist in a local tilt but in a tendency of the edges to join when they have the same contrast polarity.