Lecture 1: Introduction to Biological Vision - Vision Research ...
Lecture 1: Introduction to Biological Vision - Vision Research ...
Lecture 1: Introduction to Biological Vision - Vision Research ...
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Pathways from eye <strong>to</strong>• Functions:cortex–chiasm :• routes axons so that information from correspondingpoints on the left and right eyes can come <strong>to</strong>gether(eventually at cortex).–lateral geniculate nucleus:• more band-pass spatial filtering, even smaller response <strong>to</strong>changes in mean level -- i.e. the excita<strong>to</strong>ry (+) andinhibi<strong>to</strong>ry (-) components <strong>to</strong> the receptive field W(x,y) arebalanced. Again, absolute light level not important <strong>to</strong>visual processing• feedback from cortex (10-fold) in optic radiation suggestspossible role in information gating/selective attention,binding, multi-modal interactions...?Wednesday, August 29, 12