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arXiv 1209.3886q-bio.NCphysics.data-an
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基于最大熵原理和Monte-Carlo方法的大规模网络时空脉冲序列分析

Spatio-temporal spike trains analysis for large scale networks using maximum entropy principle and Monte-Carlo method

Hassan Nasser, Olivier Marre, Bruno Cessac

摘要:

理解神经网络的动力学是实验神经科学的一个主要挑战。为此,需要对记录的活动进行建模,重现数据的主要统计数据。在第一部分中,我们提出了一个审查最近的结果处理脉冲序列统计分析使用最大熵模型(MaxEnt)。这些研究大多集中在同步尖峰模式的建模上,而忽略了神经活动的时间动力学。然而,最大熵原理可以推广到时间的情况下,导致马尔可夫模型中的记忆效应和时间相关性的动态被适当地考虑。在第二部分中,我们提出了一种新的方法的基础上,蒙特卡罗抽样,适用于大规模的时空MaxEnt模型的拟合。这里提出的形式主义和工具对于将MaxEnt时空模型拟合到大型神经集合中至关重要。

英文摘要:

Understanding the dynamics of neural networks is a major challenge in experimental neuroscience. For that purpose, a modelling of the recorded activity that reproduces the main statistics of the data is required. In a first part, we present a review on recent results dealing with spike train statistics analysis using maximum entropy models (MaxEnt). Most of these studies have been focusing on modelling synchronous spike patterns, leaving aside the temporal dynamics of the neural activity. However, the maximum entropy principle can be generalized to the temporal case, leading to Markovian models where memory effects and time correlations in the dynamics are properly taken into account. In a second part, we present a new method based on Monte-Carlo sampling which is suited for the fitting of large-scale spatio-temporal MaxEnt models. The formalism and the tools presented here will be essential to fit MaxEnt spatio-temporal models to large neural ensembles.

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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