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arXiv 0907.3700math.PR
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随机积分激发振子激发相序列的谱分析

A Spectral Analysis of the Sequence of Firing Phases in Stochastic Integrate-and-Fire Oscillators

Peter Baxendale, John Mayberry

摘要:

积分振荡器和激发振荡器被广泛用于模拟神经元中动作电位的产生。本文讨论了一类随机积分激发振子(SIF)的小噪声渐近解,其中神经元的膜电位的建立服从高斯扩散过程.为了分析这个模型,我们研究了点火相变算子谱的渐近行为。我们首先证明强版本的大数定律和中心极限定理的第一个基本的扩散过程跨越一般的不定常边界的时间。利用这些结果,我们得到了过渡算子本征值的渐近近似。我们还讨论了我们的结果和早期的数值研究的应力强度因子之间的连接。

英文摘要:

Integrate and fire oscillators are widely used to model the generation of action potentials in neurons. In this paper, we discuss small noise asymptotic results for a class of stochastic integrate and fire oscillators (SIFs) in which the buildup of membrane potential in the neuron is governed by a Gaussian diffusion process. To analyze this model, we study the asymptotic behavior of the spectrum of the firing phase transition operator. We begin by proving strong versions of a law of large numbers and central limit theorem for the first passage-time of the underlying diffusion process across a general time dependent boundary. Using these results, we obtain asymptotic approximations of the transition operator's eigenvalues. We also discuss connections between our results and earlier numerical investigations of SIFs.

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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