Broad bandwidth of perceptual learning in second-order contrast modulation detection

	Broad bandwidth of perceptual learning in second-order contrast modulation detection
	Zhou, Jiawei 1,2; Yan, Fangfang 1,3; Lu, Zhong-Lin 4; Zhou, Yifeng 2; Xi, Jie1 ; Huang, Chang-Bing1
摘要	Comparing characteristics of learning in first- and second-order systems might inform us about different neural plasticity in the two systems. In the current study, we aim to determine the properties of perceptual learning in second-order contrast modulation detection in normal adults. We trained nine observers to detect second-order gratings at an envelope modulation spatial frequency of 8 cycles/8 with their nondominant eyes. We found that, although training generated the largest improvements around the trained frequency, contrast sensitivity over a broad range of spatial frequencies also improved, with a 4.09-octave bandwidth of perceptual learning, exhibiting specificity to the trained spatial frequency as well as a relatively large degree of generalization. The improvements in the modulation sensitivity function (MSF) were not significantly different between the trained and untrained eyes. Furthermore, training did not significantly change subjects' ability in detecting firstorder gratings. Our results suggest that perceptual learning in second-order detection might occur at the postchannel level in binocular neurons, possibly through reducing the internal noise of the visual system.
关键词	second-order modulation detection perceptual learning modulation sensitivity generalizability specificity
	2015
语种	英语
发表期刊	JOURNAL OF VISION
ISSN	1534-7362
卷号	15 期号:2 页码:1-10
期刊论文类型	Article
收录类别	SCI
WOS记录号	WOS:000350679800020
引用统计	被引频次：1[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/311026/13501
专题	中国科学院行为科学重点实验室
作者单位	1.Chinese Acad Sci, Inst Psychol, Key Lab Behav Sci, Beijing 100101, Peoples R China 2.Univ Sci & Technol China, Sch Life Sci, Key Lab Brain Funct & Dis, Hefei 230026, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Ohio State Univ, Dept Psychol, Lab Brain Proc, Columbus, OH 43210 USA
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	Zhou, Jiawei,Yan, Fangfang,Lu, Zhong-Lin,et al. Broad bandwidth of perceptual learning in second-order contrast modulation detection[J]. JOURNAL OF VISION,2015,15(2):1-10.
APA	Zhou, Jiawei,Yan, Fangfang,Lu, Zhong-Lin,Zhou, Yifeng,Xi, Jie,&Huang, Chang-Bing.(2015).Broad bandwidth of perceptual learning in second-order contrast modulation detection.JOURNAL OF VISION,15(2),1-10.
MLA	Zhou, Jiawei,et al."Broad bandwidth of perceptual learning in second-order contrast modulation detection".JOURNAL OF VISION 15.2(2015):1-10.

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