Topography as a property of the natural sensory world

Authors:
Aapo Hyvä/rinen
Affiliations:
Neural Networks Research Centre, Helsinki University of Technology, P.O. Box 5400, FIN-02015 HUT, Finland (E-mail: aapo.hyvarinen@hut.fi&semi/ http://www.cis.hut.fi/aapo/
Venue:
Natural Computing: an international journal
Year:
2002

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Abstract

The topographic organization of brain areas such as theprimary visual cortex is usually assumed to reflect exclusivelyanatomic constraints like wiring length. Here we argue thattopography is in fact imbedded in the statistical structure of thenatural sensory input. Thus, the topography of sensory areasreflects the statistics of its input as well, in the same way as thesparseness of cell outputs.