An SO(3)-symmetry breaking mechanism for orientation and spatial frequency tuning in visual cortex

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 SO(3)-symmetry breaking mechanism.


University of Utah | Department of Mathematics |
bressloff@math.utah.edu
Aug 2001.