Phase synchronization of inhibitory bursting neurons induced by distributed time delays in chemical coupling
Phase synchronization of inhibitory bursting neurons induced by distributed time delays in chemical coupling
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DOI：
10.1103/physreve.80.066202
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发表时间：
2009-12-01
影响因子：
2.4
通讯作者：
Liu, Zonghua
中科院分区：
文献类型：
--
作者：
Liang, Xiaoming;Tang, Ming;Liu, Zonghua
考虑到大脑中不同对突触耦合神经元之间的信号传输时延是不同的，我们研究了分布式时延对爆发性神经元相位同步的影响。我们考虑了Hindmarsh-Rose神经元抑制耦合爆裂的情况，发现化学耦合中的分布时滞可以诱导出各种相位相干的动力学行为。产生相干行为的临界平均时延与耦合强度和平均程度成反比。这种现象对不同的外部输入具有很强的稳健性，并且与网络拓扑无关。提出了一种物理理论来解释相干神经元活动的出现。
Considering the fact that signal transmission time delays between different pairs of synaptically coupled neurons in the brain are different, we study the effects of distributed time delays on phase synchronization of bursting neurons. We consider the case of inhibitory coupled bursting Hindmarsh-Rose neurons and find that distributed time delays in chemical coupling can induce a variety of phase-coherent dynamic behaviors. The critical mean time delay for the emergence of coherent behaviors is inversely proportional to both the coupling strength and the average degree. This phenomenon is robust to nonidentical external inputs and is independent of network topology. A physical theory is formulated to explain the emergence of coherent neuronal activity.