title: Spontaneously periodic wave generation in coupled excitable media.
abstract: We studied a modified reaction-diffusion model theoretically by coupling two ideal excitable media systems. In the simulated homogeneous system, we observed the propagation of reaction-diffusion wave trains that required no external force after the initial stimulation. We investigated the dependence of the system's oscillation patterns on model parameters, and we discussed the influence of the different dynamic constants of the individual coupled systems on the dynamics of the coupled systems. Some complex two-dimensional patterns generated by our model are shown. We also found similar phenomena in the models for catalytic CO oxidation on Pt(110), and for cardiac tissue.
authors.affiliation: Department of Applied Physics, Xi'an Jiaotong University, Xi'an 710049, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.forename: Shengli
authors.initials: S
authors.lastname: Zhang
authors.forename: Huimin
authors.initials: H
authors.lastname: Tong
authors.forename: Dongsheng
authors.initials: D
authors.lastname: Lei
authors.forename: Bambi
authors.initials: B
authors.lastname: Hu