Journal
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
Volume 388, Issue 18, Pages 3759-3764Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physa.2009.05.045
Keywords
Neuron; Non-Gaussian colored noise; Coherence resonance; Stochastic dynamics
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Funding
- Science Foundation of Ludong University [L20072805]
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In this paper, we report a novel effect of a particular kind of non-Gaussian noise (NGN), especially its deviation from Gaussian noise, on the spiking activity in a deterministic Hodgkin-Huxley (HH) neuron. It is found via numerical simulations that the coefficient of variation (CV), characterizing the spiking regularity, nonlinearly changes with varying deviation and passes through a minimum at an optimal deviation value, representing the presence of the coherence resonance (CR). This phenomenon shows that, when the NGN is optimal, the neuron can exhibit the most regular firing behavior. This result provides a constructive role of the NGN in the timing precision of information processing and signal transduction in neural systems. (C) 2009 Elsevier B.V. All rights reserved.
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