Rm. Mantel et D. Barkley, PERIODIC FORCING OF SPIRAL WAVES IN EXCITABLE MEDIA, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 54(5), 1996, pp. 4791-4802
An analysis of periodically forced spiral waves in excitable media pro
vides a simple explanation of the resonant drift dynamics and frequenc
y entrainments observed both in laboratory experiments and in simulati
ons of partial-differential equations. Forcing of both rigidly rotatin
g and meandering spirals is considered. In the meandering case we pred
ict the existence of different resonant drift states that could be det
ected in experiments.