| dc.creator |
García Ojalvo, Jordi |
|
| dc.creator |
Sagués i Mestre, Francesc |
|
| dc.creator |
Sancho, José M. |
|
| dc.creator |
Schimansky-Geier, Lutz, 1950- |
|
| dc.date |
2011-07-07T12:51:36Z |
|
| dc.date |
2011-07-07T12:51:36Z |
|
| dc.date |
2002 |
|
| dc.date.accessioned |
2024-12-16T10:27:21Z |
|
| dc.date.available |
2024-12-16T10:27:21Z |
|
| dc.identifier |
1539-3755 |
|
| dc.identifier |
http://hdl.handle.net/2445/18736 |
|
| dc.identifier |
192337 |
|
| dc.identifier.uri |
http://fima-docencia.ub.edu:8080/xmlui/handle/123456789/22296 |
|
| dc.description |
We show that external fluctuations induce excitable behavior in a bistable spatially extended system with activator-inhibitor dynamics of the FitzHugh-Nagumo type. This can be understood as a mechanism for sustained signal propagation in bistable media. The phase diagram of the stochastic system is analytically obtained and numerically verified. For small-noise intensities, front propagation becomes unstable, and excitable pulses arise as the only possible spatiotemporal behavior of the system. For large-noise intensities, on the other hand, the system enters an effective regime of oscillatory behavior, where it exhibits spontaneous nucleation of pulses and synchronized firing. |
|
| dc.format |
6 p. |
|
| dc.format |
application/pdf |
|
| dc.language |
eng |
|
| dc.publisher |
The American Physical Society |
|
| dc.relation |
Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevE.65.011105 |
|
| dc.relation |
Physical Review E, 2002, vol. 65, núm. 1, p. 011105-1-011105-6 |
|
| dc.relation |
http://dx.doi.org/10.1103/PhysRevE.65.011105 |
|
| dc.rights |
(c) The American Physical Society, 2002 |
|
| dc.rights |
info:eu-repo/semantics/openAccess |
|
| dc.source |
Articles publicats en revistes (Física Quàntica i Astrofísica) |
|
| dc.subject |
Física estadística |
|
| dc.subject |
Termodinàmica |
|
| dc.subject |
Sistemes dinàmics diferenciables |
|
| dc.subject |
Biofísica |
|
| dc.subject |
Física mèdica |
|
| dc.subject |
Biological and medical physics |
|
| dc.subject |
Statistical physics |
|
| dc.subject |
Thermodynamics |
|
| dc.subject |
Differentiable dynamical systems |
|
| dc.subject |
Biophysics |
|
| dc.subject |
Medical physics |
|
| dc.title |
Noise-enhanced excitability in bistable activator-inhibitor media |
|
| dc.type |
info:eu-repo/semantics/article |
|
| dc.type |
info:eu-repo/semantics/publishedVersion |
|