When I close my eyes I see random patterns of yellow whitish light. Does anyone know why this happens. I am guesing it could be random patterns of firing by rods and cones but it also could be activity in other areas of the visual pathway. Also does anyone know what level of the visual system correlates with our perceptions? For example if you cut the pathway from the thalamus to the primary visual cortex and stimulated the hell out of the retina you problably wouldn't see alot. What level needs to be stimulated to see stuff?