Quantized spiral tip motion in excitable systems with periodic heterogeneities.
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.
Ginn
Brent T
BT
Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, USA.
Steinbock
Oliver
O
D002468:Cell Physiological Phenomena; D008962:Models, Theoretical; D010507:Periodicity