Chaotic pulse transmission and spiral formation in a calcium oscillation model.
We study a two-dimensional reaction-diffusion equation for calcium oscillation with a pacemaker region. When the pacemaker entrains the whole system, circular waves are observed as a target pattern. However, if the pace of the pacemaker is too fast, the pulse propagation to the outer region sometimes fails in a chaotic manner. We find that spiral waves are spontaneously created at the interface between the pacemaker region and the outer region.
Department of Applied Science for Electronics and Materials, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka, Japan.
H
H
Sakaguchi
P
P
Woafo
D001683:Biological Clocks / Q000502:physiology*; D002118:Calcium / Q000502:physiology*; D003198:Computer Simulation; D004058:Diffusion; D008954:Models, Biological; D009991:Oscillometry / Q000379:methods
D002118:Calcium