Convergence of biological and psychological perspectives on cognitive coordination in schizophrenia

WA Phillips, SM Silverstein - Behavioral and Brain Sciences, 2003 - cambridge.org
The concept of locally specialized functions dominates research on higher brain function
and its disorders. Locally specialized functions must be complemented by processes that …

[PDF][PDF] Functional architecture of long-range perceptual

U Polat - Spatial vision, 1999 - uripolat.wordpress.com
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 …

Improving vision in adult amblyopia by perceptual learning

U Polat, T Ma-Naim, M Belkin… - Proceedings of the …, 2004 - National Acad Sciences
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 …

Collinear stimuli regulate visual responses depending on cell's contrast threshold

U Polat, K Mizobe, MW Pettet, T Kasamatsu, AM Norcia - Nature, 1998 - nature.com
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 …

[HTML][HTML] Detection and recognition of radial frequency patterns

F Wilkinson, HR Wilson, C Habak - Vision research, 1998 - Elsevier
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 …

[HTML][HTML] Human development of perceptual organization

I Kovács - Vision research, 2000 - Elsevier
Two relevant dimensions are revealed within which developmental patterns of perceptual
organization might be investigated. Within the local–integrative dimension, employing a …

[HTML][HTML] Center-surround interactions in foveal and peripheral vision

J Xing, DJ Heeger - Vision research, 2000 - Elsevier
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 …

Asymmetric suppression outside the classical receptive field of the visual cortex

GA Walker, I Ohzawa, RD Freeman - Journal of Neuroscience, 1999 - Soc Neuroscience
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 …

[HTML][HTML] Making perceptual learning practical to improve visual functions

U Polat - Vision research, 2009 - Elsevier
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 …

Lateral interactions in primary visual cortex: a model bridging physiology and psychophysics

M Stemmler, M Usher, E Niebur - Science, 1995 - science.org
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 …