Abstract
The present work extends our recently published study on a mechanism of pattern formation in excitable media due to inhomogeneous boundary conditions (BC). To that end, we analyze a pair of coupled excitable and oscillatory cells, a distributed FitzHugh Nagumo model, and a distributed five-variable model that describes CO catalytic oxidation. For the three systems we determine the structure of the oscillatory domains, composed of bands of complex firing solutions with period-adding bifurcations, and show the commonality of the structures. The obtained results account for the recently reported experimental observations of mixed-mode oscillations showing a period-adding bifurcation during CO oxidation on a disk-shaped catalytic cloth with imposed cold temperature BC.
| Original language | English |
|---|---|
| Article number | 056210 |
| Journal | Physical Review E |
| Volume | 75 |
| Issue number | 5 |
| DOIs | |
| State | Published - 18 May 2007 |
| Externally published | Yes |