A model for the mechanism of light and dark adaptation of vertebrate cones

摘要

A model is proposed for the mechanism of light and dark adaptation of vertebrate cones, especially for the one of operating curves shifting during light and dark adaptation, on the basis of physiological results. The mechanism is modeled in terms of bleaching levels and background effects through horizontal cell feedback loops. Furthermore, the spectral sensitivity of vertebrate cones is examined with the model. Simulations of the model are made and the results of the simulations extremely coincide with experimental results.