Coherence resonance and noise-induced synchronization in globally coupled Hodgkin-Huxley neurons.

Title Coherence resonance and noise-induced synchronization in globally coupled Hodgkin-Huxley neurons

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

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 s...

Spatial coherence resonance on diffusive and small-world networks of Hodgkin-Huxley neurons.

Spatial coherence resonance in a spatially extended system that is locally modeled by Hodgkin-Huxley (HH) neurons is studied in this paper. We focus on the ability of additive temporally and spatially uncorrelated Gaussian noise to extract a particular spatial frequency of excitatory waves in the medium, whereby examining the impact of diffusive and small-world network topology that determines ...

Autapse-induced multiple coherence resonance in single neurons and neuronal networks

We study the effects of electrical and chemical autapse on the temporal coherence or firing regularity of single stochastic Hodgkin-Huxley neurons and scale-free neuronal networks. Also, we study the effects of chemical autapse on the occurrence of spatial synchronization in scale-free neuronal networks. Irrespective of the type of autapse, we observe autaptic time delay induced multiple cohere...

Channel noise and synchronization in excitable membranes

Using a stochastic generalization of the Hodgkin-Huxley model, we consider the influence of intrinsic channel noise on the synchronization between the spiking activity of the excitable membrane and an externally applied periodic signal. For small patches, i.e. when the channel noise dominates the excitable dynamics, we find the phenomenon of intrinsic coherence resonance. In this case, the rela...