This volume presents an integrated view of how we perceive the spatial relations in our
visual world, covering anatomical, physiological, psychophysical, and perceptual aspects …

Taking a comparative approach, data from a range of visual species are discussed in the
context of ideas about mechanisms of motion detection. The cellular basis of motion …

Contrast masking was studied psychophysically. A two-alternative forced-choice procedure
was used to measure contrast thresholds for 2.0 cpd sine-wave gratings in the presence of …

PERCEIVED RATE OF MOVEMENT DEPENDS ON CONTRAST Page 1 Vision Res. Vol. 22,
pp. 317 10 380. 1982 Printed in Great Britain 0042-6989/82/030377-04SO3.0010 …

The perception of contrast was measured in humans by a technique of subjective contrast‐
matching, and was compared with contrast sensitivity as defined by threshold measures. 2 …

We have examined the idea that the adaptation of cortical neurons to local contrast levels in
a visual stimulus is functionally advantageous. Specifically, cortical cells may have large …

We examined contrast sensitivity and suprathreshold apparent contrast with natural images.
The spatial-frequency components within single octaves of the images were removed (notch …

The cellular mechanisms of spike-frequency adaptation during prolonged discharges and of
the slow afterhyperpolarization (AHP) that follows, as occur in vivo with contrast adaptation …

Contrast adaptation is a psychophysical phenomenon, the neuronal bases of which reside
largely in the primary visual cortex. The cellular mechanisms of contrast adaptation were …

Spatial contrast adaptation, produced by prolonged exposure to high contrast grating
patterns, has become an important psychophysical method for isolating spatial and …