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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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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作者单位:电子科技大学,电子科技大学,中国科学院生命研究院
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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

Receptive Field Properties of Different Spatial Integrated Cells in Cat V1

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Key Laboratory for Neuroinformation of Ministry of Education,University of Electronic Sciences and Technology of China,Chengdu,China;Center for Life Sciences,Shanghai Institutes of Biological Sciences,Chinese Academy of Sciences,Shanghai,China;,Key Laboratory for Neuroinformation of Ministry of Education,University of Electronic Sciences and Technology of China,Chengdu,China;Key Laboratory for Neuroinformation of Ministry of Education,University of Electronic Sciences and Technology of China,Chengdu,China,Center for Life Sciences, Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences, Shanghai, China

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This work was supported by grants from National Basic Research Program of China (2013CB329401), China Postdoctoral Science Foundation (2012M521681, 2013T60844), and The National Natural Science Foundation of China (31300912, 31100797, 90820301, 31000492)

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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．

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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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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收稿日期:2014-04-27
最后修改日期:2014-09-23
接受日期:2014-11-26
在线发布日期: 2015-02-06
出版日期: 2015-02-20

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