Following adaptation to a black/white rectangular-wave grating, the black and white bars of
a square wave of the same period no longer appear equal. Black bars are shifted in …

1. There is an outer disinhibitory zone surrounding the classical inhibitory surround of the
retinal ganglion cell receptive field. 2. The disinhibitory surround is strong and narrow in …

A trend in modern psychology is to assume that during perception complex stimulus events
are first analyzed by neuronal structures or feature detectors into their component properties …

The relationship between the Fourier spectra of visual textures (represented by four
hypothetical visual channels sensitive to spatial frequencies) and the perceptual …

The visual system can adapt to the size of print or to the grain size of textures like sandpaper
and shows cross-adaptation of print to sandpaper and vice versa. These aftereffects are …

Recent physiological research has indicated that the visual system makes use of units
responsive to Gabor signals in the analysis of visual stimuli. Such functions effect a tradeoff …

Visual evoked potentials (VEPs) and the percentage time fixated (PTF) were investigated in
response to checkerboard light flashes in 10 human infants ranging in age from 6 to 45 …

Contrast-modulated grating patterns were used to compare evoked responses and
psychophysical thresholds of contrast modulation. The stimulus consisted of the successive …

Experimental data exist which have been interpreted as evidence for the existence in the
human visual system of channels selectively sensitive to narrow bands of spatial …

The foveal increment threshold is known to be raised at the boundary between dark and
light fields, but there are large differences in the magnitude of the effect reported. In the …