A spatio-temporal model of the retinal horizontal cell layer

A model of the luminosity-type (L-type) horizontal cell layer in the retina was constructed in terms of the soma, axon terminal, and gap junction to understand the spatiotemporal properties. The soma and axon terminal were expressed by the Hodgkin-Huxley-type equations based on the relevant ionic currents. The L-type horizontal cell layer was simulated by connecting each L-type horizontal cell model with a linear gap junction. While the model response explained the experimental data well, the dynamics features were not fully realized without a feedback path from the horizontal cells to the photoreceptors.<>