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此词条由神经动力学读书会词条梳理志愿者Spidey0o0Zheng翻译审校，未经专家审核，带来阅读不便，请见谅。

此词条由神经动力学读书会词条梳理志愿者Spidey0o0Zheng翻译审校，未经专家审核，带来阅读不便，请见谅。

[[Image:图1 数据表示示意图.jpg|thumb|400px|right|Schematic of data representation. [[Local field potential]]s (LFPs) that exceed three standard deviations are represented by black squares.]]

[[Image:图1 数据表示示意图.jpg|thumb|400px|right|数据表示的示意图。超过三个标准差的[[局部场电位]]（LFPs）用黑色方块表示。]]

[[Image:Beggs_avalanche_movie.gif|frame|right|Neuronal avalanches in an acute cortical slice.]]

[[Image:Beggs_avalanche_movie.gif|frame|right|急性皮层切片中的神经雪崩。]]

'''神经雪崩''' is a cascade of [[bursting|bursts]] of activity in [[Neurons|neuronal]] networks whose size distribution can be approximated by a [[power law]], as in [[critical sandpile models]] (Bak et al. 1987). Neuronal avalanches are seen in cultured and acute [[cortical slices]] (Beggs and Plenz, 2003; 2004). Activity in these slices of [[neocortex]] is characterized by brief bursts lasting tens of milliseconds, separated by periods of quiescence lasting several seconds. When observed with a [[multielectrode array]], the number of electrodes driven over threshold during a burst is distributed approximately like a power law. Although this phenomenon is highly robust and reproducible, its relation to physiological processes in the intact brain is currently not known. 

'''神经雪崩'''是[[神经元]]网络中的一连串[http://www.scholarpedia.org/article/Bursting 爆发性]活动，其大小分布可以用[[幂律分布 power law|幂律]]来近似，如[[沙堆模型|临界沙堆模型]]（Bak等人，1987）。神经雪崩见于培养的和急性皮质切片（Beggs和Plenz，2003；2004）。在这些新皮层切片中，活动的特点是持续几十毫秒的短暂爆发，中间有几秒钟的静止期。当用[http://www.scholarpedia.org/article/Multielectrode_array 多电极阵列]观察时，在爆发期间被驱动超过阈值的电极数量近似于幂律分布。虽然这种现象具有高度的稳定性和可重复性，但它与完整大脑中的生理过程的关系目前还不清楚。

==实验观察 Experimental Observations==

==实验观察 Experimental Observations==