Abstract
We investigate stochastic resonance (SR) in the FitzHugh-Nagumo system under combined bounded noise and weak harmonic excitation. Taking a spectral amplification factor as a signal-to-noise ratio, we show numerically that bounded noise can induce SR by adjusting either the intensity of bounded noise or its colour. Moreover, the increase of noise colour can enhance the SR and make the peak of the SR shift toward lower noise intensities, which is more feasible in practice. Since bounded noise is flexible to model random excitation, these findings may have some potential applications in engineering, neuroscience and biology.
Original language | English |
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Article number | 010503 |
Journal | Chinese Physics B |
Volume | 19 |
Issue number | 1 |
DOIs | |
Publication status | Published - 9 Feb 2010 |
Keywords
- Bounded noise
- FitzHugh-Nagumo system
- Stochastic resonance
ASJC Scopus subject areas
- Physics and Astronomy(all)