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Independent-noise provoked spiking, synchronized via coupling.

Ishant Tiwari1, J Escalona2, M Rivera2

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Two coupled electrochemical systems show synchronized spiking when influenced by independent noise. Researchers identified specific coupling strengths and noise levels that trigger this synchronized behavior.

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Area of Science:

  • Electrochemistry
  • Nonlinear Dynamics
  • Stochastic Processes

Background:

  • Electrochemical systems can exhibit complex dynamics, including excitable behavior near bifurcations.
  • Coupling between systems can lead to emergent phenomena like synchronization.
  • Stochastic signals can influence the dynamics of nonlinear systems.

Purpose of the Study:

  • To investigate synchronized spiking phenomena in bidirectionally coupled electrochemical systems.
  • To explore the role of independent stochastic input signals in driving synchronization.
  • To identify conditions (coupling strength, noise level) that promote synchronized spiking.

Main Methods:

  • Experimental and numerical modeling of two diffusively coupled electrochemical systems.
  • Perturbation of anodic potentials with independent noise signals.
  • Analysis of oscillatory dynamics using normalized variance and cross-correlation coefficients.

Main Results:

  • Evidence of synchronized spiking phenomena was observed in the coupled systems.
  • Specific regions of coupling strength and external noise levels were identified that exhibit synchronization.
  • The interaction of stochastic inputs with coupled excitable systems can induce synchronized oscillations.

Conclusions:

  • Bidirectionally coupled electrochemical systems can achieve synchronized spiking under independent stochastic forcing.
  • The study provides a framework for understanding noise-induced synchronization in coupled nonlinear systems.
  • Findings have implications for controlling and predicting collective behavior in electrochemical and other complex systems.