Journal
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
Volume 389, Issue 2, Pages 349-357Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physa.2009.09.033
Keywords
Neurons; Complex networks; Spike coherence and synchronization; Channel block; Stochastic process
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Funding
- Natural Science Foundation of Ludong University [L20072805]
- Discipline Construction Fund of Ludong University
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In this paper, we numerically study the effect of channel block on the spiking temporal coherence and spatial synchronization on Hodgkin-Huxley (HH) neuron networks It is. found that under sodium CB the spike coherence is badly reduced, and the synchronization can, depending on the network randomness (the fraction of random shortcuts), be either enhanced or reduced, while, under potassium CB, the spike coherence can be enhanced but the synchronization is reduced. Interestingly, for certain networks of relatively large randomness, the neuron firings can achieve the best temporal coherence at an optimal potassium CB. These results show that under certain conditions channel blocking can increase and optimize the spike coherence and the synchronization on the complex HH neuron networks, whereby the neurons would exhibit a better and the best sub-threshold signal encoding. (C) 2009 Elsevier B.V. All rights reserved.
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