Electronic circuit model of retina in color vision

Based on previous works, outer retinal cell network is modeled with a simplified electronic circuit. Gap junction is represented by conductance, chemical synaptic junction is by trans-admittance. Results of simulations are appropriate to physiological responses of retina. And it is deduced in standard regularization approach that retinal network should be to minimize energy function which consists of the second or higher order smoothness constraints, residuals and their spatial derivatives. From the point of views, we illustrate some function of retina, extraction of contour and reduction of input random noises. The spatial frequency responses and effects of parameters are also discussed.