title: Quantized spiral tip motion in excitable systems with periodic heterogeneities.
abstract: Meandering spiral tips in homogeneous reaction-diffusion systems are characterized by two generically incommensurate radii and frequencies. Here, we create periodic perturbations in space to induce a transition to commensurate radii and frequencies that exhibit a devil's staircase. The plateaus of the staircase correspond to pinned or complex periodic orbits of the spiral tip.
authors.affiliation: Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, USA.
authors.forename: Brent T
authors.initials: BT
authors.lastname: Ginn
authors.forename: Oliver
authors.initials: O
authors.lastname: Steinbock
mesh_terms: D002468:Cell Physiological Phenomena; D008962:Models, Theoretical; D010507:Periodicity