title: Differential contributions of circular and elongated spatial filters to the Café Wall illusion.
abstract: The Café Wall illusion is induced in part by the spatial filtering properties of circular-symmetric receptive fields at the retina, and in part by cortical processes, presumably that have elongated receptive fields. Two experiments are reported that address these two contributions. The first shows a reversal effect that is consistent with brightness-induction and related theories. The second shows extinction of the effect in a manner predicted by recent observations of gating nonlinearity in cortical cells.
authors: Department of Computer Science, University of Oregon, Eugene 97403.
authors: D P
authors: DP
authors: Lulich
authors: K A
authors: KA
authors: Stevens
mesh_terms: D003342:Corpus Striatum / Q000502:physiology*; D006801:Humans; D007088:Illusions; D009903:Optical Illusions / Q000502:physiology*; D012160:Retina / Q000502:physiology*