The role of retinal bipolar cell in early vision: an implication with analogue networks and regularization theory
The role of retinal bipolar cell in early vision: an implication with analogue networks and regularization theory
复制标题
视网膜双极细胞在早期视觉中的作用：模拟网络和正则化理论的含义
DOI：
10.1007/s004220050377
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发表时间：
1997
影响因子：
1.9
通讯作者：
Y. Funahashi
中科院分区：
文献类型：
--
作者：
T. Yagi;Shigemichi Ohshima;Y. Funahashi
抽象的。提出了一个线性模拟网络模型来描述由视锥细胞、水平细胞和双极细胞组成的外视网膜神经回路。该模型反映了先前关于这些神经元对暗淡照明的空间响应特性的生理发现，并且由生理机制表示，即，膜电导、间隙连接电导和化学突触相互作用的强度。使用该模型，我们的特点与标准的正则化理论的双极细胞感受野的空间滤波特性，其中的早期视觉问题归因于成本函数的最小化。伴随本表征的成本函数来自线性模拟网络模型，并且人们可以获得关于生理机制如何有助于双极细胞感受野的空间滤波特性的直观见解。并阐明了高斯拉普拉斯算子与双极细胞感受野之间的定量关系。从计算的角度来看，水平细胞之间的间隙连接电导的多巴胺能调制被推断为是一个合适的神经适应机制之间的过渡明视和中间视觉。
Abstract. A linear analogue network model is proposed to describe the neuronal circuit of the outer retina consisting of cones, horizontal cells, and bipolar cells. The model reflects previous physiological findings on the spatial response properties of these neurons to dim illumination and is expressed by physiological mechanisms, i.e., membrane conductances, gap-junctional conductances, and strengths of chemical synaptic interactions. Using the model, we characterized the spatial filtering properties of the bipolar cell receptive field with the standard regularization theory, in which the early vision problems are attributed to minimization of a cost function. The cost function accompanying the present characterization is derived from the linear analogue network model, and one can gain intuitive insights on how physiological mechanisms contribute to the spatial filtering properties of the bipolar cell receptive field. We also elucidated a quantitative relation between the Laplacian of Gaussian operator and the bipolar cell receptive field. From the computational point of view, the dopaminergic modulation of the gap-junctional conductance between horizontal cells is inferred to be a suitable neural adaptation mechanism for transition between photopic and mesopic vision.
虎蝾螈视网膜中双极细胞感受野的空间组织。
DOI：
10.1113/jphysiol.1990.sp017942
发表时间：
1990
期刊：
The Journal of physiology
影响因子：
--
作者：
Hare,WA;Owen,WG
通讯作者：
Owen,WG