We have measured threshold disparity as a function of the spatial frequency (0.25–20 c/deg)
and contrast (0.02–0.75) of sine-wave gratings. In forced-choice trials, subjects indicated …

The disparity range for stereo sensitivity was investigated with spatially filtered bars, tuned
narrowly over a broad range of spatial frequencies. When measured with narrow (high …

Stereoacuity was determined for gratings and gabor patches as their orientation was varied.
Acuity was constant for 1 c/deg and 2 c/deg gratings over the range 0–80 deg when it was …

Binocular rivalry between orthogonal sine wave gratings was studied by asking subjects to
indicate when they saw just one or the other grating, as opposed to a composite. Using this …

Male and female subjects with normal or corrected-to-normal visual acuity and less than. 25
diopter of corrected astigmatism were asked to make contrast threshold judgments in …

Monocular and binocular contrast thresholds were measured over a range of spatial
frequencies in normal and stereoblind observers. Unlike normal individuals, whose …

Stereoacuity and its dependence on contrast were measured at four spatial frequencies
separated by 1 octave steps. Using a method of adjustment, observers adjusted the retinal …

Subjects estimated the perceived contrast of 2°-diameter sine-wave grating patches for
spatial frequencies of 2, 4, 8, and 16 cycles/deg, at eccentricities from 0° to 40° and contrasts …

Stereoacuity depends not only on the carrier frequency of Gabor stimuli, but also upon their
size. To determine if this is also the case at large disparities, we have measured the upper …

In comparison to lateral judgments of distance, stereoscopic judgments are not precise.
Although stereoacuity thresholds for targets presented in the fixation plane can equal the …