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Noise-induced multimode behavior in excitable systems.

D E Postnov1, O V Sosnovtseva, S K Han

  • 1Physics Department, Saratov State University, Astrakhanskaya Street 83, Saratov 410026, Russia.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|September 21, 2002
PubMed
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This study reveals that coupled electronic circuits can exhibit multiple noise-induced oscillations. These modes are linked to coherence resonance, frequency entrainment, and new time scales.

Area of Science:

  • Nonlinear dynamics
  • Complex systems
  • Electronic circuits

Background:

  • Excitable systems are fundamental in various scientific fields.
  • Understanding noise-induced phenomena is crucial for characterizing system behavior.
  • Coherence resonance is a known effect where noise enhances regularity.

Purpose of the Study:

  • To investigate noise-induced oscillatory modes in coupled excitable electronic circuits.
  • To characterize the multimode organization using the coherence resonance effect.
  • To explore the relationship between regularity, frequency entrainment, and time scales.

Main Methods:

  • Experimental investigation of coupled excitable electronic circuits.
  • Analysis of system dynamics under varying noise levels.

Related Experiment Videos

  • Characterization of oscillatory modes and coherence resonance.

    • Main Results:

    • Demonstration of multiple noise-induced oscillatory modes in the system.
    • Identification of coherence resonance as a key factor in organizing these modes.
    • Correlation of enhanced regularity with specific frequency entrainments and emergent time scales.

    Conclusions:

    • Coupled excitable systems can display complex, noise-driven oscillatory behaviors.
    • Coherence resonance plays a significant role in the emergence of multiple regular modes.
    • The study highlights the interplay between noise, frequency, and temporal organization in complex circuits.