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SO3 symmetry breaking mechanism for orientation and spatial frequency tuning in the visual cortex
Paul C Bressloff1, Jack D Cowan
1Department of Mathematics, University of Utah, Salt Lake City, Utah 84112, USA.
Physical Review Letters
|February 28, 2002
Abstract:
A dynamical model of orientation and spatial frequency tuning in a cortical hypercolumn is presented. The network topology is taken to be a sphere whose poles correspond to orientation pinwheels associated with high and low spatial frequency domains, respectively. Recurrent interactions within the sphere generate a tuned response via an SO3 symmetry breaking mechanism.