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Lateral interactions between spatial channels: Suppression and facilitation revealed by lateral masking experiments
We measured contrast detection thresholds for a foveal Gabor signal flanked by two high contrast Gabor signals. The spatially localized target and masks enabled investigation of space dependentExpand
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Where practice makes perfect in texture discrimination: evidence for primary visual cortex plasticity.
  • A. Karni, D. Sagi
  • Computer Science, Medicine
  • Proceedings of the National Academy of Sciences…
  • 1 June 1991
In terms of functional anatomy, where does learning occur when, for a basic visual discrimination task, performance improves with practice (perceptual learning)? We report remarkable long-termExpand
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The time course of learning a visual skill
SEVERAL examples of experience-dependent perceptual improve-ment (perceptual learning) suggest that plasticity in specific neu-ronal loci could underlie the learning process1–6. For a basic visualExpand
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The architecture of perceptual spatial interactions
Lateral interactions between spatial filters were explored with a lateral masking paradigm. Contrast sensitivity (two-alternative forced-choice) for a Gabor signal in the presence of two flankingExpand
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Motion-induced blindness in normal observers
Cases in which salient visual stimuli do not register consciously are known to occur in special conditions, such as the presentation of dissimilar stimuli to the two eyes or when images areExpand
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Improving vision in adult amblyopia by perceptual learning.
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 such asExpand
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Dependence on REM sleep of overnight improvement of a perceptual skill.
Several paradigms of perceptual learning suggest that practice can trigger long-term, experience-dependent changes in the adult visual system of humans. As shown here, performance of a basic visualExpand
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Perceptual learning in Vision Research
  • D. Sagi
  • Psychology, Medicine
  • Vision Research
  • 1 July 2011
Reports published in Vision Research during the late years of the 20th century described surprising effects of long-term sensitivity improvement with some basic visual tasks as a result of training.Expand
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Spatial interactions in human vision: from near to far via experience-dependent cascades of connections.
  • U. Polat, D. Sagi
  • Computer Science, Medicine
  • Proceedings of the National Academy of Sciences…
  • 15 February 1994
We show that learning induces an increase in the spatial range of lateral interactions after extensive training on a threshold detection task. Expand
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Gabor filters as texture discriminator
The present paper presents a model for texture discrimination based on Gabor functions. In this model the Gabor power spectrum of the micropatterns corresponding to different textures is calculated.Expand
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