Coherence Resonance in a Noise-Driven Excitable System
- We study the dynamics of the excitable Fitz Hugh-Nagumo system under external noisy driving. Noise activates the system producing a sequence of pulses. The coherence of these noise-induced oscillations is shown to be maximal for a certain noise amplitude. This new effect of coherence resonance is explained by different noise dependencies of the activation and the excursion times. A simple one-dimensional model based on the Langevin dynamics is proposed for the quantitative description of this phenomenon.
| Author details: | Arkadij PikovskijORCiDGND, Jürgen KurthsORCiDGND |
|---|---|
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 1997 |
| Publication year: | 1997 |
| Release date: | 2017/03/24 |
| Source: | Physical Review Letters. - 78 (1997), S. 775 - 778 |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| Institution name at the time of the publication: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik |
