Abstract
Certain experiments on the detection of low-contrast gratings, occasionally cited as evidence of Fourier analysis within the visual system, are interpreted without the assumption of Fourier analysis. Theoretical curves are obtained and compared with the published experimental points, showing mostly satisfactory agreement. The computations utilize Gaussian receptive fields (on-center and off-center) for the retinal ganglion cells, spatial summation, center-surround antagonism, quasilinear response at low contrasts (X-cells), and the assumption that the first significant convergence is primarily between cells of like response type and like receptive field geometry.
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Legéndy, C.R. Can the data of Campbell and Robson be explained without assuming fourier analysis?. Biol. Cybernetics 17, 157–163 (1975). https://doi.org/10.1007/BF00364164
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DOI: https://doi.org/10.1007/BF00364164