Noise-induced synchronization and coherence resonance of a Hodgkin-Huxley model of thermally sensitive neurons

Changsong ZHOU*, Jürgen Kurths

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

146 Citations (Scopus)

Abstract

We study nontrivial effects of noise on synchronization and coherence of a chaotic Hodgkin-Huxley model of thermally sensitive neurons. We demonstrate that identical neurons which are not coupled but subjected to a common fluctuating input (Gaussian noise) can achieve complete synchronization when the noise amplitude is larger than a threshold. For nonidentical neurons, noise can induce phase synchronization. Noise enhances synchronization of weakly coupled neurons. We also find that noise enhances the coherence of the spike trains. A saddle point embedded in the chaotic attractor is responsible for these nontrivial noise-induced effects. Relevance of our results to biological information processing is discussed.

Original languageEnglish
Pages (from-to)401-409
Number of pages9
JournalChaos
Volume13
Issue number1
DOIs
Publication statusPublished - Mar 2003

Scopus Subject Areas

  • Statistical and Nonlinear Physics
  • Mathematical Physics
  • Physics and Astronomy(all)
  • Applied Mathematics

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