21. The retinal ganglion cells will still receive an excitatory neural response but only from the center rod. 22. This is due to loss of retinal ganglion cells nasal to the macula in the papillomacular bundle. 23. The output takes the form of action potentials in retinal ganglion cells whose axons form the optic nerve. 24. In the retinal ganglion cells there are two types of response, depending on the receptive field of the cell. 25. Specifically, SHH attracts retinal ganglion cell ( RGC ) axons at low concentrations and repels them at higher concentrations. 26. Small bistratified retinal ganglion cells oppose input from the S cones to input from the L and M cones. 27. The magnocellular, parvocellular, and koniocellular layers of the LGN correspond with the similarly named types of retinal ganglion cells. 28. Among Shapley s findings were his discoveries about the X and Y retinal ganglion cells in the cat retina. 29. The pattern ERG ( PERG ), evoked by an alternating checkerboard stimulus, primarily reflects activity of retinal ganglion cells. 30. Excitation of retinal ganglion cells results in an increased firing rate while inhibition results in a depressed rate of firing.
