Understanding visual map formation through vortex dynamics of spin Hamiltonian models

Details Understanding visual map formation through vortex dynamics of spin Hamiltonian models Understanding visual map formation through vortex dynamics of spin Hamiltonian models

2003-06-05

arxiv.org/abs/physics/0306047v2

Physics

Biological Physics

4 pages, 15 figures

Scientific paper

10.1103/PhysRevLett.92.018101

The pattern formation in orientation and ocular dominance columns is one of the most investigated problems in the brain. From a known cortical structure, we build spin-like Hamiltonian models with long-range interactions of the Mexican hat type. These Hamiltonian models allow a coherent interpretation of the diverse phenomena in the visual map formation with the help of relaxation dynamics of spin systems. In particular, we explain various phenomena of self-organization in orientation and ocular dominance map formation including the pinwheel annihilation and its dependency on the columnar wave vector and boundary conditions.

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