In the mid'Sixties, as a result of studies on the receptive field properties of single visual
cortical neurones, neurobiologists had obtained a general understanding of the first stages …

The question of whether or not past experience exerts an influence on perception, per se, or
only on the outputs of a universal perceptual process has yet to be answered definitively. In …

Psychophysical research has demonstrated that: images on the human retina are processed
in parallel by a number of spatial filters or mechanisms each tuned for both orientation and …

This chapter provides an overview of some fundamental issues in perceptual organization.
The Gestalt psychologists hypothesized that perceptual experience stood in an isomorphic …

The principal rival to empiricist theory has come from Gestalt psychology, an early twentieth-
century movement that attempted to explain perception in terms of the intrinsic …

The question was raised whether the Gestalt law of grouping by proximity is based on
proximity of stimuli on the retina or perceived proximity in phenomenal space. To tease apart …

In two experiments on whether similarity grouping is based on the retinal or the perceived
slopes of lines, observers judged the grouping of diagonal lines when a display of vertical …

This volume on Visual Psychophysics documents the current status of research aimed
toward understanding the intricacies of the visual mechanism and its laws of operation in …