NDLI: The role of retinal bipolar cell in early vision: an implication with analogue networks and regularization theory

Content Provider	Springer Nature Link
Author	Yagi, Tetsuya Ohshima, Shigemichi Funahashi, Yasuyuki
Copyright Year	1997
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.
Starting Page	163
Ending Page	171
Page Count	9
File Format	PDF
ISSN	03401200
Journal	Biological Cybernetics
Volume Number	77
Issue Number	3
e-ISSN	14320770
Language	English
Publisher	Springer-Verlag
Publisher Date	1997-10-01
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Computer Science Biotechnology

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