The Eye-Brain connection

       The human eye doesn’t really “see” anything at all. The portions of the spectrum of electromagnetic energy that pass through the eye stimulate the rod and cone receptors in the back of the retina. Those receptors relay information to the brain’s thalamus, often called “ the gateway to the cortex” which in turn relays the information to other parts of the cortex for more sophisticated processing and interpretation. It’s for cortex that interprets visual input as patterns of lightness, darkness, shape, color, and texture that make up images. The cortex then records the data in ways that carry meaning and the potential for memory.