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Neural Computation, Vol 9, 577-594, Copyright © 1997 by The MIT Press

LETTERS

Topographic Receptive Fields and Patterned Lateral Interaction in a Self-Organizing Model of the Primary Visual Cortex

Joseph Sirosh and Risto Miikkulainen

This article presents a self-organizing neural network model for the simultaneous and cooperative development of topographic receptive fields and lateral interactions in cortical maps. Both afferent and lateral connections adapt by the same Hebbian mechanism in a purely local and un-supervised learning process. Afferent input weights of each neuron self-organize into hill-shaped profiles, receptive fields organize topographically across the network, and unique lateral interaction profiles develop for each neuron. The model demonstrates how patterned lateral connections develop based on correlated activity and explains why lateral connection patterns closely follow receptive field properties such as ocular dominance.


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