Orientation Misperceptions Induced by Contrast Polarity: Comment on “Contrast Polarities Determine the Direction of Café Wall Tilts” by Akiyoshi Kitaoka,Baingio Pinna,and Gavin Brelstaff (2004)
Restricted accessResearch articleFirst published online March, 2006
Orientation Misperceptions Induced by Contrast Polarity: Comment on “Contrast Polarities Determine the Direction of Café Wall Tilts” by Akiyoshi Kitaoka,Baingio Pinna,and Gavin Brelstaff (2004)
According to Kitaoka et al (2004, Perception33 11–20), the Café 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.
Get full access to this article
View all access options for this article.
References
1.
FieldD JHayesAHessR F, 2000“The roles of polarity and symmetry in the perceptual grouping of contour fragments”Spatial Vision1351–66
2.
GregoryR LHeardP, 1979“Border locking and the Café Wall illusion”Perception8365–380
3.
KitaokaAPinnaBBrelstaffG, 2004“Contrast polarities determine the direction of Café Wall tilts”Perception3311–20
4.
McCourtM E, 1983“Brightness induction and the Café Wall illusion”Perception12131–142
5.
MouldenBRenshawJ, 1979“The Münsterberg illusion and ‘irradiation’”Perception8275–301
6.
RoncatoS, 2000“The effect of luminance variation on the apparent position of an edge”Perception & Psychophysics62762–785
7.
RoncatoSCascoC, 2003“The influence of contrast and spatial factors in the perceived shape of boundaries”Perception & Psychophysics651252–1272
8.
ShipleyT FKellmanJ, 2003“Boundary completion in illusory contours: Interpolation or extrapolation?”Perception32985–999