Journal
PHYSICS LETTERS A
Volume 354, Issue 4, Pages 258-263Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physleta.2006.01.066
Keywords
excitable membranes; ion channel noise; synchronization; subthreshold stimuli
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The channel noise that stems from the stochastic nature of the ion channel has important effects on neuronal dynamics. In this context, we investigate the effect of the sub-threshold periodic current forcing on the regularity and synchronization of neuronal spiking activity by using a stochastic extension of the Hodgkin-Huxley model. We demonstrate that the intrinsic coherence resonance is independent of the forcing frequency for Very small patch size while it is dependent on the frequency for larger sizes. We also show that the observed phase locking behavior occurs on the positive phase of the periodic current forcing for a small frequency range while the spikes fire most frequently at negative phase as the frequency is increased. (c) 2006 Elsevier B.V. All rights reserved.
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