Noise-induced synchronization and coherence resonance of a Hodgkin-Huxley model of thermally sensitive neurons |
| |
Authors: | Zhou Changsong Kurths Jürgen |
| |
Institution: | Institute of Physics, University of Potsdam, PF 601553, 14415 Potsdam, Germany. cszhou@agnld.uni-potsdam.de |
| |
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. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|