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arXiv 0811.3371q-bio.NC
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有髓神经元中噪声辅助的锋电位传播

Noise-assisted spike propagation in myelinated neurons

Anna Ochab-Marcinek, Gerhard Schmid, Igor Goychuk, Peter Hänggi

摘要:

我们考虑噪声辅助的棘波传播的有髓轴突内的多室随机Hodgkin-Huxley模型。噪声来源于朗维尔的每个节点中的有限数量的离子通道。对于亚阈值结间的电耦合,我们表明,(i)固有噪声消除了尖锐的定义的阈值从节点到节点的尖峰传播,和(ii)存在一个最佳数量的离子通道,允许最有效的信号传播,它对应于实际的生理值。

英文摘要:

We consider noise-assisted spike propagation in myelinated axons within a multi-compartment stochastic Hodgkin-Huxley model. The noise originates from a finite number of ion channels in each node of Ranvier. For the subthreshold internodal electric coupling, we show that (i) intrinsic noise removes the sharply defined threshold for spike propagation from node to node, and (ii) there exists an optimum number of ion channels which allows for the most efficient signal propagation and it corresponds to the actual physiological values.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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