| 猫V1区不同外周整合细胞的经典感受野属性研究 |
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| 引用本文： | 陈科,尹娇娇,宋雪梅. 猫V1区不同外周整合细胞的经典感受野属性研究[J]. 生物化学与生物物理进展, 2015, 42(2): 182-188 |
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| 作者姓名： | 陈科 尹娇娇 宋雪梅 |
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| 作者单位： | 电子科技大学神经信息教育部重点实验室，成都 610054,电子科技大学神经信息教育部重点实验室，成都 610054,中国科学院上海生命科学研究院，上海 200031 |
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| 基金项目： | 国家重点基础研究发展计划(973)(2013CB329401)，中国博士后科学基金(2012M521681, 2013T60844)，国家自然科学基金(31300912, 31100797, 90820301, 31000492)资助项目 |
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| 摘 要： | 以家猫为动物模型,采用细胞外记录的方法,测试了82个初级视皮层细胞的方位和方向调谐以及感受野大小.基于细胞的面积整合特性,区分出52个外周抑制型细胞和30个外周无抑制型细胞.所有被测细胞均存在强的方位选择性,而外周无抑制型细胞比抑制型细胞有更强的方位选择性.两类细胞的方向选择性没有显著性差异.外周抑制型细胞比外周无抑制型细胞有着更大的动作电位发放率.采用两种不同方法测量两类细胞的感受野范围,却产生了不同的结果:用最小反应区测量发现抑制型细胞的经典感受野更大,而用面积整合曲线测量时外周无抑制型细胞的感受野更大.
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| 关 键 词： | 感受野 外周抑制 方位选择性 方向选择性 简单细胞 复杂细胞 |
| 收稿时间： | 2014-04-27 |
| 修稿时间： | 2014-09-23 |
Receptive Field Properties of Different Spatial Integrated Cells in Cat V1 |
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| CHEN Ke,YIN Jiao-Jiao and SONG Xue-Mei. Receptive Field Properties of Different Spatial Integrated Cells in Cat V1[J]. Progress In Biochemistry and Biophysics, 2015, 42(2): 182-188 |
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| Authors: | CHEN Ke YIN Jiao-Jiao SONG Xue-Mei |
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| Affiliation: | Key Laboratory for Neuroinformation of Ministry of Education, University of Electronic Sciences and Technology of China, Chengdu 610054, China,Key Laboratory for Neuroinformation of Ministry of Education, University of Electronic Sciences and Technology of China, Chengdu 610054, China and Center for Life Sciences, Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China |
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| Abstract: | We have examined the orientation, direction selectivity and receptive field size by extracellular recording for 82 V1 neurons of cat. Based on the area-summation measurements, 82 units were classified as 52 suppressive surround cells (SSCs) and 30 non-suppressive surround cells (nSSCs). Our results showed nSSCs have much sharper orientation selectivity and narrower tuning width than SSCs. No significant difference was found in direction selectivity between SSCs and nSSCs. SSCs have larger peak firing rates than the nSSCs. Two methods were used in measuring the receptive field size, but arises different results in comparison of SSCs and nSSCs. |
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| Keywords: | receptive field surround suppression orientation selectivity direction selectivity simple cells complex cells |
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