FIGURE 1.

Schematic illustration of visual information transfer from the eye to the visual cortex. The visual information flows through the lateral geniculate nucleus (LGN) en route to the visual cortex. But, LGN is not shown in this figure for brevity. (A) Retinal ganglion cells generate spiking activities to visual stimuli and transmit visual information to the brain (visual cortex) through the optic nerve and optic radiation. (B) Insufficient visual information and less natural artificial vision may activate higher visual centers inappropriately. (C) Rich visual information and more natural artificial vision may activate higher visual centers more effectively.