title: [Unidirectional block of propagation of a single autowave in a narrow gap and emergence of a two-dimensional reentry depends on geometry of the obstacle and on excitability of the media].
abstract: Using mathematical simulation we show that the occurrence of excitation wave circulation (reentry) around an unexcitable obstacle depends on both the geometry of the obstacle and the excitation threshold. The reentry formation is shown to take place in a wide range of model parameters.
mesh_terms: D008962:Models, Theoretical