基于概念的知觉学习

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	基于概念的知觉学习
其他题名	Perceptual Learning at a Conceptual Level
	Rui Wang ; Jie Wang ; Jun-Yun Zhang ; Xin-Yu Xie ; Yu-Xiang Yang ; Shu-Han Luo ; Cong Yu ; Wu Li
	2016
会议名称	2016年第一届北京视觉科学会议
会议日期	2016-07
会议地点	北京
其他摘要	Purpose: Humans can learn to abstract and conceptualize the shared visual features defining an object category in object learning. Therefore, learning is generalizable to transformations of familiar objects and even to new objects that di?er in other physical properties. In contrast, visual perceptual learning (VPL), improvement in discriminating ?ne di?erences of a basic visual feature through training, is commonly regarded as speci?c and low-level learning due to its speci?city to the trained stimulus conditions. Such location and orientation speci?city is taken as evidence for neural plasticity in V1 or improved readout of V1 signals. However, new training methods have shown complete VPL transfer across stimulus locations and orientations, suggesting the involvement of high-level cognitive processes. Here we report that VPL bears similar properties of object learning. Methods & Results: Speci?cally, we trained human observers to discriminate the explicit orientation of luminance gratings encoded by V1 neurons; or the implicit orientation of bilaterally symmetric dot patterns encoded by higher cortical areas. We compared the mutual transfer of learning between these two distinct stimuli. Learning in orientation discrimination of the symmetric dot patterns transferred completely to the gratings. In contrast, learning in orientation discrimination of the gratings transferred only partially to the dot patterns; but subsequent exposure to the same-oriented dot patterns in an irrelevant task (a Training-Plus-Exposure technique) further markedly reduced orientation thresholds for the dot patterns, achieving a complete learning transfer from the gratings to the dot patterns. Similarly, motion direction discrimination learning is transferable between the ?rst- and second-order motion signals, replicating the same patterns of learning transfer. Conclusion: These results suggest that perceptual learning can take place at a conceptual level and generalize to stimuli with different physical properties. Our findings thus reconcile perceptual and object learning into a uni?ed framework.
会议主办者	中国科学院心理研究所
关键词	perceptual learning transfer orientation motion direction
学科领域	感知觉心理学
URL	查看原文
收录类别	其他
语种	英语
文献类型	会议论文
条目标识符	http://ir.psych.ac.cn/handle/311026/20781
专题	心理所主办、承办、协办学术会议_2016年第一届北京视觉科学会议_会议摘要
作者单位	1.Department of Psychology, University of Cambridge, Cambridge, UK, CB2 3EB, 2.Department of Psychology, Peking University, Beijing, China, 100871, 3.Department of Psychology, Peking University, Beijing, China, 100871,
推荐引用方式 GB/T 7714	Rui Wang,Jie Wang,Jun-Yun Zhang,等. 基于概念的知觉学习[C]. 见:2016年第一届北京视觉科学会议. 北京. 2016-07.http://vision.csp.escience.cn/dct/page/1.