Lecture 1: Introduction to Biological Vision - Vision Research ...

Pathways from eye to• Functions:cortex–chiasm :• routes axons so that information from correspondingpoints on the left and right eyes can come together(eventually at cortex).–lateral geniculate nucleus:• more band-pass spatial filtering, even smaller response tochanges in mean level -- i.e. the excitatory (+) andinhibitory (-) components to the receptive field W(x,y) arebalanced. Again, absolute light level not important tovisual processing• feedback from cortex (10-fold) in optic radiation suggestspossible role in information gating/selective attention,binding, multi-modal interactions...?Wednesday, August 29, 12