中国科学院上海生命科学研究院神经科学研究所机构知识库
Advanced  
SIBS OpenIR  > 神经所(总)  > 期刊论文
Title: The Spatiotemporal Frequency Tuning of LGN Receptive Field Facilitates Neural Discrimination of Natural Stimuli
Author: Tan, Zhongchao ; null(姚海珊)
Source: JOURNAL OF NEUROSCIENCE
Issued Date: 2009
Volume: 29, Issue:36, Pages:11409-11416
Keyword: LATERAL GENICULATE-NUCLEUS ; RETINAL GANGLION-CELLS ; PRIMARY VISUAL-CORTEX ; CATS STRIATE CORTEX ; CONTRAST SENSITIVITIES ; SPATIAL SUMMATION ; NEURONS ; SCENES ; STATISTICS ; VISION
Subject: Neurosciences & Neurology
Corresponding Author: Yao, HS (reprint author), Chinese Acad Sci, Shanghai Inst Biol Sci, State Key Lab Neurosci, Inst Neurosci, Shanghai 200031, Peoples R China,haishanyao@ion.ac.cn
English Abstract: The efficient coding hypothesis suggests that the early visual system is optimized to represent stimuli in the natural environment. While it is believed that LGN processing removes the redundant information of natural scenes, it is not clear whether the early visual processing can selectively amplify important signals in natural stimuli to facilitate discrimination. In this study, we examined the functional role of LGN spatiotemporal frequency tuning in the processing of natural scenes. First, we characterized the relationship between spatial and temporal frequency tuning for LGN receptive fields. We found that LGN neurons exhibit inseparable spatiotemporal frequency tuning in a manner consistent with the feature of optimal filters that can maximize information transmission of natural scenes. Second, we analyzed the spatiotemporal power spectrum of natural scenes and found that some frequencies exhibit larger variation in power across different scenes. Interestingly, the preferred frequency of ensemble LGN neurons matches the range of frequencies in which natural power spectrum varies most. Comparison of neural discrimination for natural stimuli and for artificial stimuli with similar mean power spectra but different variation structure showed that the match between LGN tuning and natural spectra variation enhances neural discrimination for natural stimuli. Our results indicate that, in addition to removing redundancy, the spatiotemporal frequency characteristics of LGN neurons can facilitate neural discrimination of natural stimuli.
Indexed Type: sci
Language: 英语
Content Type: 期刊论文
URI: http://ir.sibs.ac.cn/handle/331001/1644
Appears in Collections:神经所(总)_期刊论文
视觉神经生理学研究组_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
Tan-2009-The Spatiotemporal F.pdf(1370KB)----开放获取View Download

Recommended Citation:
Tan, Zhongchao; Yao, Haishan.The Spatiotemporal Frequency Tuning of LGN Receptive Field Facilitates Neural Discrimination of Natural Stimuli,JOURNAL OF NEUROSCIENCE,2009,29(36):11409-11416
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Tan, Zhongchao]'s Articles
[Yao, Haishan]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Tan, Zhongchao]‘s Articles
[Yao, Haishan]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: Tan-2009-The Spatiotemporal F.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!