Transition and enhancement of synchronization by time delays in stochastic Hodgkin-Huxley neuron networks
Transition and enhancement of synchronization by time delays in stochastic Hodgkin-Huxley neuron networks
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DOI：
10.1016/j.neucom.2010.07.011
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发表时间：
2010-10-01
期刊：
影响因子：
6
通讯作者：
Ma, Xiaoguang
中科院分区：
文献类型：
--
作者：
Hao, Yinghang;Gong, Yubing;Ma, Xiaoguang
本文研究了随机Hodgkin-Huxley(HH)神经元Newman-Watts网络中时滞对峰同步的影响。结果发现，随着tau的增加，神经元呈现出从尖峰同步(SS)到群聚反相同步(SS)再回到SS的转变。此外，APS后的SS随着时延的增加而增强。对于不同的贴片大小(信道噪声强度)、网络随机性(随机连接的分数)和耦合强度，神经元表现出相似的同步转变，并且APS总是发生在tau=4左右。这表明时延诱导的APS行为对信道噪声、随机连接数量和耦合强度是稳健的。由于神经元的信息处理是由膜电位的放电活动完成的，而放电的同步性在放电活动中起着至关重要的作用，我们的结果有助于我们理解时延的影响以及通道噪声和时延对放电活动的相互作用，从而有助于我们理解随机神经元系统中的信息处理。(C)2010爱思唯尔B.V.保留所有权利。
In this paper, we study the effect of time delay on spiking synchronizations in Newman-Watts networks of stochastic Hodgkin-Huxley (HH) neurons. It is found that as tau is increased, the neurons exhibit transitions from spiking synchronization (SS) to clustering anti-phase synchronization CAPS) and back to SS. Furthermore, the SS after the APS is enhanced with increasing time delay. For different patch sizes (channel noise strength), network randomness (fraction of random connections), and coupling strengths, the neurons exhibit similar synchronization transitions and the APS always occurs at around tau=4. representing that the time delay-induced APS behavior is robust to the channel noise, the number of random connections, and the coupling strength. A simple explanation for this phenomenon was given in terms of the relation of spiking time-period and time delay values.Since the information processing in the neurons are fulfilled by the spiking activity of the membrane potential and the spiking synchronization plays a crucial role in the spiking activity, our results may help us understand the effect of time delay as well as the interplay of channel noise and time delay on the spiking activity and hence the information processing in stochastic neuronal systems. (C) 2010 Elsevier B.V. All rights reserved.