A modification and extension of Kortum and Geisler’s model [Vision Res. <b>35</b>, 1595 (1995)] of early visual nonlinearities that incorporates an expansive nonlinearity (consistent with neurophysiological findings [Vision Res. <b>35</b>, 2725 (1995)], a normalization based on a local average retinal illumination, similar to Mach’s proposal [F. Ratliff, <i>Mach Bands: Quantitative Studies on Neural Networks in the Retina</i> (Holden-Day, San Francisco, Calif., 1965)], and a subsequent compression suggested by Henning <i>et al</i>. [J. Opt. Soc. Am A <b>17</b>, 1147 (2000)] captures a range of hitherto unexplained interactions between a sinusoidal grating of low spatial frequency and a contrast-modulated grating 2 octaves higher in spatial frequency.
© 2004 Optical Society of America
(330.1880) Vision, color, and visual optics : Detection
(330.5000) Vision, color, and visual optics : Vision - patterns and recognition
(330.5510) Vision, color, and visual optics : Psychophysics
(330.7310) Vision, color, and visual optics : Vision
G. Bruce Henning, "Masking effects of low-frequency sinusoidal gratings on the detection of contrast modulation in high-frequency carriers," J. Opt. Soc. Am. A 21, 486-490 (2004)