After inspection of vertical sinusoidal gratings at least three distinct types of subjective or
'hallucinated'patterns can be seen on a uniform test field. One type, here called horizontal …

Two-dimensional Fourier analysis of checkerboards reveals that major components are at a
45° angle to the check edges. After adapting to chromatic checkerboards, subjects who …

Striped gratings and a bullseye (concentric circles) were masked by stimuli that look unlike
those patterns, but share orientational and spatial-frequency components with them. A small …

The spatially localized threshold-elevation aftereffect of spatial-frequency adaptation was
measured by using localized, aperiodic test patterns that have bandpass Fourier transforms …

Incremental (masking) and adaptation contrast thresholds were measured for sinusoidal
gratings of different spatial frequencies presented either in an on-off mode or reversed in …

A model for visual adaptation to spatial grating is developed based on the assumption that
inhibitory synapses within the visual system may be temporarily modified as a function of …

After viewing a suitable grating of vertical stripes for 5 minutes, subjects overestimated the
width of a rectangle by 6 percent. The shifts in perception of size occurred whether individual …

Este trabalho discute alguns aspectos teóricos sobre os modelos detector de características
e análise de freqüência espacial em cinco seções. A primeira mostra uma breve história e a …

Two parallel lines separated by several minutes of arc inhibit each other more strongly when
they are oriented vertically or horizontally as compared with oblique orientations. This …

Many complex receptive flelds in the cat's visual cortex have been shown to be tuned
spatiail-frequency filters with a bandwidth of about 2 octaves at half amplitude. The maxima …