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http://hdl.handle.net/2445/18736
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DC Field | Value | Language |
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dc.contributor.author | García Ojalvo, Jordi | cat |
dc.contributor.author | Sagués i Mestre, Francesc | cat |
dc.contributor.author | Sancho, José M. | cat |
dc.contributor.author | Schimansky-Geier, Lutz, 1950- | cat |
dc.date.accessioned | 2011-07-07T12:51:36Z | - |
dc.date.available | 2011-07-07T12:51:36Z | - |
dc.date.issued | 2002 | - |
dc.identifier.issn | 1539-3755 | - |
dc.identifier.uri | http://hdl.handle.net/2445/18736 | - |
dc.description.abstract | 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. | eng |
dc.format.extent | 6 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | eng |
dc.publisher | The American Physical Society | eng |
dc.relation.isformatof | Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevE.65.011105 | cat |
dc.relation.ispartof | Physical Review E, 2002, vol. 65, núm. 1, p. 011105-1-011105-6 | - |
dc.relation.uri | http://dx.doi.org/10.1103/PhysRevE.65.011105 | - |
dc.rights | (c) The American Physical Society, 2002 | eng |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Física estadística | cat |
dc.subject.classification | Termodinàmica | cat |
dc.subject.classification | Sistemes dinàmics diferenciables | cat |
dc.subject.classification | Biofísica | cat |
dc.subject.classification | Física mèdica | cat |
dc.subject.other | Biological and medical physics | eng |
dc.subject.other | Statistical physics | eng |
dc.subject.other | Thermodynamics | eng |
dc.subject.other | Differentiable dynamical systems | eng |
dc.subject.other | Biophysics | eng |
dc.subject.other | Medical physics | eng |
dc.title | Noise-enhanced excitability in bistable activator-inhibitor media | eng |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 192337 | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Ciència dels Materials i Química Física) Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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192337.pdf | 327.13 kB | Adobe PDF | View/Open |
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