FORMATION OF STATIONARY DEMARCATION ZONES BETWEEN POPULATION AUTOWAVES PROPAGATING TOWARDS EACH OTHER

Two kinds of autowaves are known to exist in the simplest mathematical models of excitable media: OMEGA and KOMEGA waves. One of the essenti al differences between them rests in the fact that the OMEGA waves col lide whereas the KOMEGA waves do not. In the present paper we show tha t both OMEGA- and KOMEGA-like waves occur in the essentially more comp lex population expansion mathematical model. The OMEGA-like waves prop agate at higher rates than do the KOMEGA-like ones. Both types of auto waves can carry out transitions from unstable spatial structures into other, stable ones. The results of computer experiments are supported by our experiments in vivo.