Dynamical modelling of human cones upon ERG flash responses

Abstract

The paper shows a new dynamical model of the human cone receptors of the eye that is based on the action potential changes of the receptors caused by coloured light stimuli. Flash electroretinograms of subjects having normal color vision were taken for light stimuli having different spectral characteristics. The different ERG answers led us to separate the individual answers of the three different human cones of the eye. Light flashes of the measurement were explained as switching on and off of an input signal for the unknown system of the eye, while the output of the system on this signal is given by the ERG curve itself. Knowing the in- and outputs of the cone system, the transfer functions and the transfer systems were identified.