Abstract

In the low-spatial-frequency region (below 2 c/deg) contrast sensitivity to sinusoids does not depend on spatial frequency, but does depend on the number of cycles of sinusoid. Contrast sensitivity to sinusoids can vary from 14 to 60 depending on the amount of average-luminance area or flank adjacent to the sinusoid. The influence of average-luminance flanks does not depend on the width of the flank, but does depend on the equivalent number of cycles of flank.

© 1980 Optical Society of America

Visibility of low-spatial-frequency sine-wave targets: Dependence on number of cycles

Robert L. Savoy and John J. McCann
J. Opt. Soc. Am. 65(3) 343-350 (1975)

Influence of the target size on the detection threshold for luminance and chromaticity contrast

Cornells Noorlander, Mathijs J. G. Heuts, and Jan J. Koenderink
J. Opt. Soc. Am. 70(9) 1116-1121 (1980)

Visibility of Sine-Wave Gratings

Glenn A. Fry
J. Opt. Soc. Am. 59(5) 610-617 (1969)

Temporal sensitivity of the human visual system to sinusoidal gratings

Takashi Nagano
J. Opt. Soc. Am. 70(6) 711-716 (1980)

Characteristics of the Visual System: Psychophysical Measurements of the Response to Spatial Sine-Wave Stimuli in the Photopic Region*

Olof Bryngdahl
J. Opt. Soc. Am. 56(6) 811-821 (1966)