Co-learning analysis of two perceptual learning tasks with identical input stimuli supports the reweighting hypothesis

	Co-learning analysis of two perceptual learning tasks with identical input stimuli supports the reweighting hypothesis
	Huang, Chang-Bing3,4 ; Lu, Zhong-Lin 1,3; Dosher, Barbara A.2; Lu, ZL (reprint author), Ohio State Univ, Dept Psychol, Lab Brain Proc LOBES, 1835 Neil Ave, Columbus, OH 43210 USA.
心理所单位排序	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
	2012-05-15
语种	英语
发表期刊	VISION RESEARCH
ISSN	0042-6989
卷号	61 期号:0 页码:25-32
期刊论文类型	Article
收录类别	SCI
项目简介	This research was supported by NEI. There are no competing interests on the research.
WOS记录号	WOS:000304631600004
资助机构	NEI
引用统计	被引频次：19[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
第一作者单位	中国科学院行为科学重点实验室
推荐引用方式 GB/T 7714	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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