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Broad bandwidth of perceptual learning in second-order contrast modulation detection
Zhou, Jiawei1,2; Yan, Fangfang1,3; Lu, Zhong-Lin4; Zhou, Yifeng2; Xi, Jie1; Huang, Chang-Bing1
2015
发表期刊JOURNAL OF VISION
ISSN1534-7362
文章类型Article
卷号15期号:2页码:1-10
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
收录类别SCI
语种英语
WOS记录号WOS:000350679800020
引用统计
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
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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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