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arXiv 1012.3623q-bio.NCcond-mat.dis-nnphysics.bio-ph
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在具有神经元雪崩的平衡皮层网络中信息容量和传输最大化

Information capacity and transmission are maximized in balanced cortical networks with neuronal avalanches

Woodrow L. Shew, Hongdian Yang, Shan Yu, Rajarshi Roy, Dietmar Plenz

摘要:

皮层网络可以产生的神经活动模式的库限制了网络传输和处理信息的能力。在这里,我们测量的活动模式获得的多站点局部场电位(LFP)记录在皮层文化,氨基甲酸乙酯麻醉大鼠,清醒的猕猴。首先,我们量化的信息容量的模式剧目的持续和刺激诱发的活动使用香农熵。接下来,我们用互信息量化了刺激和反应之间的信息传递效率。通过系统地改变兴奋/抑制(E/I)在体外和网络模型中的比例,我们发现,在一个特定的中间E/I的信息容量和信息传输是最大化的,在这个中间E/I,正在进行的活动出现神经元雪崩。接下来,我们使用我们的体外和模型结果来正确预测体内信息容量和正在进行的活动中神经元组之间的相互作用。我们的实验和模型之间的密切协议表明,神经元雪崩和峰值信息容量的出现是由于临界性,是具有平衡的E/I的皮层网络的一般属性。

英文摘要:

The repertoire of neural activity patterns that a cortical network can produce constrains the network's ability to transfer and process information. Here, we measured activity patterns obtained from multi-site local field potential (LFP) recordings in cortex cultures, urethane anesthetized rats, and awake macaque monkeys. First, we quantified the information capacity of the pattern repertoire of ongoing and stimulus-evoked activity using Shannon entropy. Next, we quantified the efficacy of information transmission between stimulus and response using mutual information. By systematically changing the ratio of excitation/inhibition (E/I) in vitro and in a network model, we discovered that both information capacity and information transmission are maximized at a particular intermediate E/I, at which ongoing activity emerges as neuronal avalanches. Next, we used our in vitro and model results to correctly predict in vivo information capacity and interactions between neuronal groups during ongoing activity. Close agreement between our experiments and model suggest that neuronal avalanches and peak information capacity arise due to criticality and are general properties of cortical networks with balanced E/I.

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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