We report the study of a woman who perceives 2D bounded regions of space (“shapes”)
defined by sharp edges of medium to high contrast as if they were rotated by 90, 180 …

Although a great deal is known about the early sensory and the later, perceptual, stages of
visual processing, far less is known about the nature of intermediate representational units …

Many Gestalt phenomena have been described in terms of perception of a whole being not
equal to the sum of its parts. It is unclear how these phenomena emerge in the brain. We …

GEOMETRIC REPRESENTATIONS OF PERCEPTUAL PHENOMENA: Papers in Honor of
Tarow Indow on His 70th Birthday Page 1 6 Genericity In Spatial Vision Marc K. Albert …

In order to compare the recognition of objective (defined in three dimensions) and projective
(on the frontal-parallel plane) shapes, subjects were asked to identify angles (either …

▪ Abstract Visuospatial cognition requires taking into account where things are relative to
each other and not just relative to the viewer. Consequently it would make sense for the …

Lesions to posterior temporo-parietal brain regions are associated with deficits in perception
of global, hierarchical shapes, but also with impairments in the processing of objects …

" Imagine a wire-frame cube resting on a tabletop with the front face directly in front of you
and perpendicular to your line of sight. Imagine the long diagonal that goes from the bottom …

Vision is based on spatial correspondences between physically different structures—in
environment, retina, brain, and perception. An examination of the correspondence between …

We report joint neuropsychological and computational research into the nature of spatial
representation and visual selection in the brain. In the first part of the paper, we discuss …