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CATEGORIES:Human and computer vision series:Spring 2011 CREATED:20151203T141542 SUMMARY:Visual Perceptual Learning: Changing the State of the Observer LOCATION:University of California\, Department of Cognitive Science DESCRIPTION:Perceptual learning improves perceptual task performance in distinctive way s. External noise tests and noisy ideal observer models can characterize th e effects of perceptual learning (or attention) on an observer's performanc e. Across a range of tasks, two independent mechanisms can be seen: tuning of the task relevant perceptual template (external noise exclusion) and en hancing the stimulus (reducing absolute threshold). In the context of perce ptual learning, both mechanisms may reflect re-weighting of information fro m early sensory codes. Principles of reweighting provide an account of a ra nge of phenomena in perceptual learning, including the roles of feedback in performance and principles of transfer and specificity. An augmented Hebbi an reweighting model (and extensions) provides one approach to understandin g how we learn and how it generalizes.\n \n X-ALT-DESC;FMTTYPE=text/html:
Perceptual lea
rning improves perceptual task performance in distinctive ways. External no
ise tests and noisy ideal observer models can characterize the effects of p
erceptual learning (or attention) on an observer's performance. Across a range of tasks, two independent
mechanisms can be seen: tuning of the task relevant perceptual template (ex
ternal noise exclusion) and enhancing the stimulus (reducing absolute thres
hold). In the context of perceptual learning, both mechanisms may reflect r
e-weighting of information from early sensory codes. Principles of reweight
ing provide an account of a range of phenomena in perceptual learning, incl
uding the roles of feedback in performance and principles of transfer and s
pecificity. An augmented Hebbian reweighting model (and extensions) provide
s one approach to understanding how we learn and how it generalizes.