A SIMPLE 3-STATES CELLULAR-AUTOMATON FOR MODELING EXCITABLE MEDIA

propagation in excitable media provides an important example of spatio temporal self-organization. The Belousov-Zhabotinsky (BZ) reaction and the impulse propagation along nerve axons are two well-known examples of this phenomenon. Excitable media have been modelled by continuous partial differential equations and by discrete cellular automata. Here we describe a simple three-states cellular automaton model based on t he properties of excitation and recovery that are essential to excitab le media. Our model is able to reproduce the dynamics of patterns obse rved in excitable media.