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Unformatted text preview: Ocular dominance columns develop slowly after birth, as this autoradio graphs from the developing kitten cortex shows. This model develops quasiperiodic columns, with variations due to random initial conditions. Optical imaging (9 12 mm) shows that the cortex represents orientation selectivity in orderly, pinwheel like maps of columns of cells. In a model of cortical develop ment, the input correlation matrix emerges from interactions between cells in the LGN. When one superimposes different cortical maps, interesting relationships arise. Does the lawful organization of multiple cortical maps follow a computational rationale? Hypothesis: The multidimensional visual space projects to a twodimensional cortex such that features that need to be together are together. In other words, how do we lay multiple maps onto a 2D cortex in a sensible way? As an example of dimension ality reduction, take a mapping from 2D to 1D, such that neighbors in 2D are close in 1D. where > 0 is a constant. > 0 is a constant....
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 Spring '09
 Grzywacz

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