Abstract

A numerical Fourier transform was made of the pincushion grid illusion and the spectral components orthogonal to the illusory lines were isolated. Their inverse transform creates a picture of the illusion. The spatial-frequency response of cortical, simple receptive field neurons similarly filters the grid. A complete set of these neurons thus approximates a two-dimensional Fourier analyzer. One cannot conclude, however, that the brain actually uses frequency-domain information to interpret visual images.

© 1979 Optical Society of America

Motion and vision. II. Stabilized spatio-temporal threshold surface

D. H. Kelly
J. Opt. Soc. Am. 69(10) 1340-1349 (1979)

Predictions of an inhomogeneous model: Detection of local and extended spatial stimuli

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J. Opt. Soc. Am. 69(12) 1635-1648 (1979)

Theory of spatial-frequency filtering by the human visual system. I. Performance limited by quantum noise*

Alvin D. Schnitzler
J. Opt. Soc. Am. 66(6) 608-617 (1976)

Theory of spatial-frequency filtering by the human visual system. II. Performance limited by video noise*

Alvin D. Schnitzler
J. Opt. Soc. Am. 66(6) 617-625 (1976)

Two-dimensional analysis of retinal information transfer

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J. Opt. Soc. Am. 65(7) 842-846 (1975)