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==实验观察==

==实验观察==

[[Image:Figure3.jpg|thumb|400px|right|Example of an avalanche. Seven frames are shown, where each frame represents activity on the electrode array during one 4 ms time step. An avalanche is a series of consecutively active frames that is preceded by and terminated by blank frames. Avalanche size is given by the total number of active electrodes. The avalanche shown here has a size of 9.]]

[[Image:雪崩示例.jpg|thumb|400px|right|Example of an avalanche. Seven frames are shown, where each frame represents activity on the electrode array during one 4 ms time step. An avalanche is a series of consecutively active frames that is preceded by and terminated by blank frames. Avalanche size is given by the total number of active electrodes. The avalanche shown here has a size of 9.]]

===幂律尺寸分布===

===幂律尺寸分布===

====Preliminary Reports in Other Systems====

====Preliminary Reports in Other Systems====

Power law distributions of sequence sizes have also been observed in spikes from the isolated [[leech ganglion]] (V. Torre, conference talk) and in spikes from [[dissociated cortical cultures]] (L. Bettencourt; R. Alessio,  personal communications), suggesting that the phenomenon of avalanches may be quite general to in-vitro preparations. Preliminary reports also indicate that avalanches are present in the superficial cortical layers of awake, resting primates (Petermann et al, 2006). These reports have not been published yet and are included here only to indicate that researchers are now exploring the avalanche concept in a variety of preparations.

Power law distributions of sequence sizes have also been observed in spikes from the isolated [[leech ganglion]] (V. Torre, conference talk) and in spikes from [[dissociated cortical cultures]] (L. Bettencourt; R. Alessio,  personal communications), suggesting that the phenomenon of avalanches may be quite general to in-vitro preparations. Preliminary reports also indicate that avalanches are present in the superficial cortical layers of awake, resting primates (Petermann et al, 2006). These reports have not been published yet and are included here only to indicate that researchers are now exploring the avalanche concept in a variety of preparations.

==雪崩模型==  

==雪崩模型==