Recent data from several laboratories have shown that spatial-frequency discrimination is
not a smooth function of frequency but rather exhibits alternate peaks and troughs. A model …

Recent data have shown that spatial-frequency adaptation has little effect on spatial-
frequency discrimination at the adapting frequency, but there is a substantial elevation of …

This paper derives the constraints on a set of channels that would be consistent with the
results of several experiments on the temporal properties of the visual system, and it …

This article extends our previous reports that multiple sclerosis can cause a visual
dysfunction better described as a distortion than as a blurring of vision. An earlier paper …

A large number of studies, using a wide variety of experimental techniques, have
investigated the “higher-order” color mechanisms proposed by Krauskopf and colleagues in …

Current models of spatial frequency (SF) and orientation discrimination are based on
contrast discrimination data. In these “error propagation” models, the precision of all …

Not too long ago when visual scientists spoke about adaptability they were al most always
referring to light, dark, and color adaptation. The visual appear ance of an illuminated area …

Subjects were presented with two gratings with different spatial frequencies and they were
asked to discriminate one from the other. Their ability to discriminate between the gratings …

Threshold elevations were measured as a function of the spatial frequency of high contrast
cosine masks using spatially localized test stimuli with a 1.0 octave bandwidth. The cosine …

To establish how little information the human visual system requires for recognition, common
objects were digitally manipulated in the Fourier domain. The results demonstrate that it is …