| Mixed training at high and low accuracy levels leads to perceptual learning without feedback. | |
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MedLine Citation:
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PMID: 22227159 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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In this study, we investigated whether mixing easy and difficult trials can lead to learning in the difficult conditions. We hypothesized that while feedback is necessary for significant learning in training regimes consisting solely of low training accuracy trials, training mixtures with sufficient proportions of high accuracy training trials would lead to significant learning without feedback. Thirty-six subjects were divided into one experimental group in which trials with high training accuracy were mixed with those with low training accuracy and no feedback, and five control groups in which high and low accuracy training were mixed in the presence of feedback; high and high training accuracy were mixed or low and low training accuracy were mixed with and without feedback trials. Contrast threshold improved significantly in the low accuracy condition in the presence of high training accuracy trials (the high-low mixture group) in the absence of feedback, although no significant learning was found in the low accuracy condition in the group with the low-low mixture without feedback. Moreover, the magnitude of improvement in low accuracy trials without feedback in the high-low training mixture is comparable to that in the high accuracy training without feedback condition and those obtained in the presence of trial-by-trial external feedback. The results are both qualitatively and quantitatively consistent with the predictions of an augmented Hebbian learning model. We conclude that mixed training at high and low accuracy levels can lead to perceptual learning at low training accuracy levels without feedback. |
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Authors:
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Jiajuan Liu; Zhong-Lin Lu; Barbara Anne Dosher |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-12-29 |
Journal Detail:
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Title: Vision research Volume: - ISSN: 1878-5646 ISO Abbreviation: - Publication Date: 2011 Dec |
Date Detail:
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Created Date: 2012-1-9 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0417402 Medline TA: Vision Res Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Elsevier Ltd. All rights reserved. |
Affiliation:
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Laboratory of Brain Processes (LOBES), Neuroscience Graduate Program, Department of Biological Science, University of Southern California, Los Angeles, CA 90089-1061, United States. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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