Noise-enhanced temporal regularity in coupled chaotic oscillators

Ying-Cheng Lai, Zonghua Liu

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


Existing works on coherence resonance, i.e., the phenomenon of noise-enhanced temporal regularity, focus on excitable dynamical systems such as those described by the FitzHugh-Nagumo equations. We extend the scope of coherence resonance to an important class of nonexcitable dynamical systems: coupled chaotic oscillators. In particular. we argue that, when a system of coupled chaotic oscillators in a noisy environment is viewed as a signal processing unit. the degree of temporal regularity of certain output signals may be modulated by noise and may reach a maximum value at some optimal noise level. Implications to signal processing in biological systems are pointed out.

Original languageEnglish
Article number066202
Number of pages9
JournalPhysical Review. E, Statistical, Nonlinear and Soft Matter Physics
Issue number6
Publication statusPublished - Dec 2001


  • on-off intermittency
  • stochastic resonance
  • coherence resonance
  • synchronized motion
  • dynamical-systems
  • stability theory
  • persistent currents
  • bifurcations
  • rings


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