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

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

A '''neuronal avalanche''' 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.   

A '''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.   

==Experimental Observations==

==Experimental Observations==