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Co-learning analysis of two perceptual learning tasks with identical input stimuli supports the reweighting hypothesis
Huang, Chang-Bing3,4; Lu, Zhong-Lin1,3; Dosher, Barbara A.2; Lu, ZL (reprint author), Ohio State Univ, Dept Psychol, Lab Brain Proc LOBES, 1835 Neil Ave, Columbus, OH 43210 USA.
2012-05-15
发表期刊VISION RESEARCH
ISSN0042-6989
文章类型Article
卷号61期号:0页码:25-32
产权排序3
摘要Perceptual learning, even when it exhibits significant specificity to basic stimulus features such as retinal location or spatial frequency, may cause discrimination performance to improve either through enhancement of early sensory representations or through selective re-weighting of connections from the sensory representations to specific responses, or both. For most experiments in the literature, the two forms of plasticity make similar predictions (Dosher & Lu, 2009; Petrov, Dosher, & Lu, 2005). The strongest test of the two hypotheses must use training and transfer tasks that rely on the same sensory representation with different task-dependent decision structures. If training changes sensory representations, transfer (or interference) must occur since the (changed) sensory representations are common. If instead training re-weights a separate set of task connections to decision, then performance in the two tasks may still be independent. Here, we performed a co-learning analysis of two perceptual learning tasks based on identical input stimuli, following a very interesting study of Fahle and Morgan (1996) who used nearly identical input stimuli (a three dot pattern) in training bisection and vernier tasks. Two important modifications were made: (1) identical input stimuli were used in the two tasks, and (2) subjects practiced both tasks in multiple alternating blocks (800 trials/block). Two groups of subjects with counterbalanced order of training participated in the experiments. We found significant and independent learning of the two tasks. The pattern of results is consistent with the reweighting hypothesis of perceptual learning. (C) 2011 Elsevier Ltd. All rights reserved.
关键词Perceptual learning Vernier Bisection Representation enhancement Selective reweighting
学科领域Cognitive Psychology
收录类别SCI
语种英语
项目资助者NEI
项目简介This research was supported by NEI. There are no competing interests on the research.
WOS记录号WOS:000304631600004
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被引频次:11[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.psych.ac.cn/handle/311026/11445
专题中国科学院行为科学重点实验室
通讯作者Lu, ZL (reprint author), Ohio State Univ, Dept Psychol, Lab Brain Proc LOBES, 1835 Neil Ave, Columbus, OH 43210 USA.
作者单位1.Ohio State Univ, Dept Psychol, Lab Brain Proc LOBES, Columbus, OH 43210 USA
2.Univ Calif Irvine, Dept Cognit Sci, Irvine, CA 92697 USA
3.Univ So Calif, Dept Psychol, Lab Brain Proc LOBES, Los Angeles, CA 90089 USA
4.Chinese Acad Sci, Inst Psychol, Key Lab Behav Sci, Beijing 100101, Peoples R China
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Huang, Chang-Bing,Lu, Zhong-Lin,Dosher, Barbara A.,et al. Co-learning analysis of two perceptual learning tasks with identical input stimuli supports the reweighting hypothesis[J]. VISION RESEARCH,2012,61(0):25-32.
APA Huang, Chang-Bing,Lu, Zhong-Lin,Dosher, Barbara A.,&Lu, ZL .(2012).Co-learning analysis of two perceptual learning tasks with identical input stimuli supports the reweighting hypothesis.VISION RESEARCH,61(0),25-32.
MLA Huang, Chang-Bing,et al."Co-learning analysis of two perceptual learning tasks with identical input stimuli supports the reweighting hypothesis".VISION RESEARCH 61.0(2012):25-32.
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