Percolation in living neural networks

被引：80

作者：

Breskin, Ilan ^{[1
]}

Soriano, Jordi ^{[1
]}

Moses, Elisha ^{[1
]}

Tlusty, Tsvi ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Phys Complex Syst, IL-76100 Rehovot, Israel

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.97.188102

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study living neural networks by measuring the neurons' response to a global electrical stimulation. Neural connectivity is lowered by reducing the synaptic strength, chemically blocking neurotransmitter receptors. We use a graph-theoretic approach to show that the connectivity undergoes a percolation transition. This occurs as the giant component disintegrates, characterized by a power law with an exponent beta similar or equal to 0.65. beta is independent of the balance between excitatory and inhibitory neurons and indicates that the degree distribution is Gaussian rather than scale free.

引用

页数：4

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