Aspects of Processing in the Visual Thalamus; Context, Correlations, and Re-entrant Signals

Abstract
The act of seeing appears effortless, yet it’s a perceptual sense whose processing occupies a large percentage of the neurons of our central nervous system. One fascinating conundrum of this mass of neurons is the following: the brain region receiving most of the input coming directly from the eyes (the dorsal lateral geniculate nucleus; dLGN) only receives some 6–10% of its input from the eyes! At this very first stage of visual processing, the incoming sensory information is modified and augmented by a whole plethora of connections from other parts of the brain. For the dLGN the numerically dominant inputs come from the part of the brain to which the dLGN sends its output, the visual cortex. This type of reciprocal connection is termed a feedback loop.

Acknowledgements
I would like to offer a huge thank you