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Noise-enhanced temporal regularity in coupled chaotic oscillators.

Y C Lai1, Z Liu

  • 1Department of Mathematics, Arizona State University, Tempe, Arizona 85287, USA.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|December 12, 2001
PubMed
Summary

This study extends coherence resonance to coupled chaotic oscillators, demonstrating noise can enhance signal regularity in nonexcitable systems. Optimal noise levels maximize temporal regularity, offering insights for biological signal processing.

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Area of Science:

  • Nonlinear Dynamics
  • Chaos Theory
  • Signal Processing

Background:

  • Coherence resonance typically studies noise-enhanced temporal regularity in excitable systems like FitzHugh-Nagumo models.
  • Existing research has not extensively explored coherence resonance in nonexcitable dynamical systems.

Purpose of the Study:

  • To investigate the phenomenon of coherence resonance in coupled chaotic oscillators, a class of nonexcitable systems.
  • To determine if noise can enhance temporal regularity in these nonexcitable systems.
  • To explore the implications for signal processing in biological contexts.

Main Methods:

  • Modeling coupled chaotic oscillators in a noisy environment.
  • Analyzing output signals to quantify temporal regularity.

Related Experiment Videos

  • Identifying the optimal noise level for maximum regularity.

    • Main Results:

    • Coherence resonance is demonstrated in coupled chaotic oscillators, extending its known scope.
    • Noise modulates the temporal regularity of output signals.
    • An optimal noise intensity was found to maximize signal regularity.

    Conclusions:

    • Coherence resonance is applicable to nonexcitable systems, specifically coupled chaotic oscillators.
    • Noise can act as a beneficial factor in regularizing signals from chaotic systems.
    • Findings suggest potential applications in understanding and improving signal processing within biological systems.