title: The size-weight illusion in 2-D nonlinear psychophysics.
abstract: An extension of unidimensional nonlinear psychophysics is postulated by using forms of cross-coupling between the parameters of the two single-channel recursions, which have already been shown to model some perceptual phenomena. The size-weight illusion is shown to be reproducible in the topology of its relations, and it is suggested that some so-called illusions are in fact the natural consequences of nonlinear cross-coupling. The conditions that produce the illusion involve partially compensating the cross-coupling of sensory dimensions, and a second equilibrium with no cross-coupling, resembling simpler veridical perception, also exists in the behavior of some subjects.
authors.affiliation: Department of Psychology, University of New England, Armidale, N.S.W., Australia.
authors.forename: R A
authors.initials: RA
authors.lastname: Gregson
authors.forename: L A
authors.initials: LA
authors.lastname: Britton
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D009903:Optical Illusions; D011601:Psychophysics; D012858:Size Perception; D014110:Touch; D014892:Weight Perception