Psychophysical studies on human and non-human vertebrate species have shown that
visual contrast sensitivity function (CSF) peaks at a certain stimulus spatial frequency and …

Contrast processing is a fundamental function of the visual system, and contrast sensitivity
as a function of spatial frequency (CSF) provides critical information about the integrity of the …

The luminance contrast sensitivity function has been investigated using behavioral and
electrophysiological methods in many vertebrate species. Some features are conserved …

Background Perceptual learning has been documented in adult humans over a wide range
of tasks. Although the often-observed specificity of learning is generally interpreted as …

The contrast sensitivity function (CSF) describes how sensitivity (1/contrast threshold) to
narrow-band stimuli varies with spatial and/or temporal frequency. It provides a fundamental …

Many psychophysical studies of various visual tasks show that performance is generally
better for binocular than for monocular observation. To investigate the physiological basis of …

This chapter addresses the question of whether a single broadly-tuned mechanism
underlies the contrast sensitivity function. Direct physiological and anatomical data support …

When cat V1/V2 cells are adapted to contrast at their optimal orientation, a reduction in gain
and/or a shift in the contrast response function is found. We investigated how these factors …

It is possible to discriminate between grating contrasts over a 300-fold contrast range,
whereas V1 neurons have very limited dynamic ranges. Using populations of model …

It is well known that, in humans, contrast sensitivity training at high spatial frequency (SF) not
only leads to contrast sensitivity improvement, but also results in an improvement in visual …