The Spatiotemporal Frequency Tuning of LGN Receptive Field Facilitates Neural Discrimination of Natural Stimuli
文献类型：期刊论文
| 作者 | Yao, Haishan
|
| 刊名 | JOURNAL OF NEUROSCIENCE
 |
| 出版日期 | 2009 |
| 卷号 | 29期号:36页码:11409-11416 |
| 关键词 | LATERAL GENICULATE-NUCLEUS RETINAL GANGLION-CELLS PRIMARY VISUAL-CORTEX CATS STRIATE CORTEX CONTRAST SENSITIVITIES SPATIAL SUMMATION NEURONS SCENES STATISTICS VISION |
| ISSN号 | 0270-6474 |
| 通讯作者 | 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 |
| 英文摘要 | 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. |
| 学科主题 | Neurosciences & Neurology |
| 收录类别 | SCI |
| 资助信息 | Chinese Academy of Sciences[KSCX2-YW-R-29]; National Basic Research Program in China[2006CB806600]; Hundred Talent Program of the Chinese Academy of Sciences[2008-2010]; Science and Technology of Shanghai Municipality[06dj14010] |
| 语种 | 英语 |
| 公开日期 | 2012-07-13 |
| 源URL | [http://ir.sibs.ac.cn/handle/331001/1644]  |
| 专题 | 上海神经科学研究所_神经所(总) 上海神经科学研究所_视觉神经生理学研究组 |
| 推荐引用方式 GB/T 7714 | Yao, Haishan. The Spatiotemporal Frequency Tuning of LGN Receptive Field Facilitates Neural Discrimination of Natural Stimuli[J]. JOURNAL OF NEUROSCIENCE,2009,29(36):11409-11416. |
| APA | Yao, Haishan.(2009).The Spatiotemporal Frequency Tuning of LGN Receptive Field Facilitates Neural Discrimination of Natural Stimuli.JOURNAL OF NEUROSCIENCE,29(36),11409-11416. |
| MLA | Yao, Haishan."The Spatiotemporal Frequency Tuning of LGN Receptive Field Facilitates Neural Discrimination of Natural Stimuli".JOURNAL OF NEUROSCIENCE 29.36(2009):11409-11416. |
入库方式： OAI收割
来源：上海神经科学研究所
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