SO3 symmetry breaking mechanism for orientation and spatial frequency tuning in the 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 SO3 symmetry breaking mechanism.
Bressloff
Paul C
PC
Department of Mathematics, University of Utah, Salt Lake City, Utah 84112, USA.
Cowan
Jack D
JD
D000818:Animals; D005829:Geniculate Bodies / Q000166:cytology / Q000502:physiology; D006801:Humans; D008954:Models, Biological; D009474:Neurons / Q000502:physiology; D014793:Visual Cortex / Q000166:cytology / Q000502:physiology*