The concept of locally specialized functions dominates research on higher brain function
and its disorders. Locally specialized functions must be complemented by processes that …

The pattern of lateral interactions in the primary visual cortex, which has emerged from
recent studies, conforms to the grouping rules of similarity, proximity, smoothness and …

Practicing certain visual tasks leads, as a result of a process termed “perceptual learning,” to
a significant improvement in performance. Learning is specific for basic stimulus features …

Neurons in the primary visual cortex are selective for the size, orientation and direction of
motion of patterns falling within a restricted region of visual space known as the receptive …

Detection thresholds for radial deformations of circular contours were measured using a
range of radii and contour peak spatial frequencies. For radial frequencies above two cycles …

Two relevant dimensions are revealed within which developmental patterns of perceptual
organization might be investigated. Within the local–integrative dimension, employing a …

The perceived contrast of a central stimulus can be decreased (surround suppression) or
increased (surround facilitation) by the presence of surround stimuli. In this report we …

Areas beyond the classical receptive field (CRF) can modulate responses of the majority of
cells in the primary visual cortex of the cat. Although general characteristics of this …

Task-specific improvement in performance after training is well established. The finding that
learning is stimulus-specific and does not transfer well between different stimuli, between …

Recent physiological studies show that the spatial context of visual stimuli enhances the
response of cells in primary visual cortex to weak stimuli and suppresses the response to …