Abstract
The processes underlying photopic contrast sensitivity functions (CSFs) have been modeled in terms of multiple channels selective for spatial frequency (De Valois & De Valois, 1988). The lowest frequency channel obtained foveally using stational sinusoidal gratings typically has its peak sensitivity near 1 c/deg (Greenlee et al. 1988; Peterzell & Teller, 1996, 2000; Tolhurst, 1973).
© 2000 Optical Society of America
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