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The external noise normalized gain profile of spatial vision
Hou, Fang1; Lu, Zhong-Lin2,3; Huang, Chang-Bing4
2014
发表期刊JOURNAL OF VISION
ISSN1534-7362
文章类型Article
卷号14期号:13页码:1-14
摘要The contrast sensitivity function (CSF), a measure of visual sensitivity to a wide range of spatial frequencies, has been widely used as the gain profile of the front-end filter of the visual system to predict how we perceive spatial patterns. However, the CSF itself is determined by the gain profile and other processing inefficiencies of the visual system; it may be problematic to use the CSF as the gain profile in observer models. Here, we applied the external noise paradigm and the perceptual template model (PTM) to characterize several major properties of the visual system. With the external noise normalized gain profile, nonlinearity, and internal additive and multiplicative noises, the PTM accounted for 92.8% of the variance in the experiment data measured in a wide range of conditions and revealed the major processing components that determine the CSF. Unlike the CSF, the external noise normalized gain profile of the visual system is relatively flat across a wide range of spatial frequencies. The results may have major implications for understanding normal and abnormal spatial vision.
关键词contrast sensitivity function gain spatial vision spatial frequency channel noise perceptual template model
收录类别SCI
语种英语
WOS记录号WOS:000345768300009
引用统计
文献类型期刊论文
条目标识符http://ir.psych.ac.cn/handle/311026/14149
专题中国科学院行为科学重点实验室
作者单位1.Ohio State Univ, Dept Psychol, Columbus, OH 43210 USA
2.Ohio State Univ, Ctr Cognit Brain & Sci, Dept Psychol, Columbus, OH USA
3.Ohio State Univ, Ctr Cognit & Behav Brain Imaging, Columbus, OH USA
4.Chinese Acad Sci, Inst Psychol, Key Lab Behav Sci, Beijing 100101, Peoples R China
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Hou, Fang,Lu, Zhong-Lin,Huang, Chang-Bing. The external noise normalized gain profile of spatial vision[J]. JOURNAL OF VISION,2014,14(13):1-14.
APA Hou, Fang,Lu, Zhong-Lin,&Huang, Chang-Bing.(2014).The external noise normalized gain profile of spatial vision.JOURNAL OF VISION,14(13),1-14.
MLA Hou, Fang,et al."The external noise normalized gain profile of spatial vision".JOURNAL OF VISION 14.13(2014):1-14.
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