Phototransduction Biophysics

Phototransduction biophysics comprises intracellular molecular reactions and ion fluxes through ion channels on the photoreceptor membrane that converts light into an electrical signal. Phototransduction biophysics serves the purpose of counting photons and integrating these counts to an estimate – a macroscopic voltage response – of light changes from a small area of visual space. To do this task well in vastly varying light conditions, photoreceptors rely upon stochastic adaptive sampling of light information.

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