Contrast-dependent OFF-dominance in cat primary visual cortex facilitates discrimination of stimuli with natural contrast statistics
文献类型：期刊论文
| 作者 | Liu, KF ; Yao, HS |
| 刊名 | EUROPEAN JOURNAL OF NEUROSCIENCE
 |
| 出版日期 | 2014 |
| 卷号 | 39期号:12页码:2060-2070 |
| 关键词 | RETINAL GANGLION-CELLS RECEPTIVE-FIELD SIZE MACAQUE V1 NEURONS STRIATE CORTEX RETINOTOPIC ORGANIZATION SPATIAL-FREQUENCY LOCAL CONTRAST COMPLEX CELLS SCENES IMAGES |
| ISSN号 | 0953-816X |
| 通讯作者 | Yao, HS (reprint author), Chinese Acad Sci, Shanghai Inst Biol Sci, Inst Neurosci, Shanghai, Peoples R China.,haishanyao@ion.ac.cn |
| 英文摘要 | Both theoretical and experimental studies suggest that response properties in the visual system are shaped by signals in the natural environment. Recent studies showed that, in the primary visual cortex (V1), neurons preferring light decrements (OFF stimuli) outnumber those preferring light increments (ON stimuli). However, it is not clear whether the OFF-dominance in V1 neurons is related to the contrast statistics in natural images. By analysing the distribution of negative and positive contrasts in natural images at several spatial scales, we showed that optimal coding of the natural contrast signals would lead to a contrast-dependent OFF-dominant response, with a stronger degree of OFF-dominance at a higher contrast. Using bright and dark stimuli at various contrast levels to measure the receptive fields of neurons in cat V1, we found an increasing degree of OFF-dominance of the neuronal population as the contrast was increased. By modeling receptive fields exhibiting OFF- and ON-dominance, we found that contrast-dependent OFF-dominance facilitated the discrimination of stimuli with natural contrast distribution. Thus, by matching contrast-dependent OFF-dominance to the statistics of contrast distribution in natural images, V1 neurons may better discriminate contrast information in natural scenes. |
| 收录类别 | SCI |
| 资助信息 | 973 program [2011CBA00401] |
| 语种 | 英语 |
| 公开日期 | 2014-07-30 |
| 源URL | [http://ir.sibs.ac.cn/handle/331001/2603]  |
| 专题 | 上海神经科学研究所_神经所(总) |
| 推荐引用方式 GB/T 7714 | Liu, KF,Yao, HS. Contrast-dependent OFF-dominance in cat primary visual cortex facilitates discrimination of stimuli with natural contrast statistics[J]. EUROPEAN JOURNAL OF NEUROSCIENCE,2014,39(12):2060-2070. |
| APA | Liu, KF,&Yao, HS.(2014).Contrast-dependent OFF-dominance in cat primary visual cortex facilitates discrimination of stimuli with natural contrast statistics.EUROPEAN JOURNAL OF NEUROSCIENCE,39(12),2060-2070. |
| MLA | Liu, KF,et al."Contrast-dependent OFF-dominance in cat primary visual cortex facilitates discrimination of stimuli with natural contrast statistics".EUROPEAN JOURNAL OF NEUROSCIENCE 39.12(2014):2060-2070. |
入库方式： OAI收割
来源：上海神经科学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。