Enhancement of neural synchrony by time delay
Enhancement of neural synchrony by time delay
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DOI：
10.1103/physrevlett.92.074104
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发表时间：
2004-02-20
影响因子：
8.6
通讯作者：
Ding, MZ
中科院分区：
文献类型：
--
作者：
Dhamala, M;Jirsa, VK;Ding, MZ
在具有时滞耦合的神经元振子网络中，我们发现了时滞对神经元同步性的增强现象：在低耦合强度下存在稳定的同步态，且时滞很大。通过制定一个主稳定性方程的时间延迟的Hindmarsh-Rose神经元网络，我们表明，总是有一个扩展区域的稳定同步活动对应于低耦合强度。只有通过更高的耦合强度才能在无延迟系统中实现这种同步。这种通过延迟增强神经同步的现象具有重要意义，特别是在理解远处神经元的同步和大脑中的信息处理方面。
In a network of neuronal oscillators with time-delayed coupling, we uncover a phenomenon of enhancement of neural synchrony by time delay: a stable synchronized state exists at low coupling strengths for significant time delays. By formulating a master stability equation for time-delayed networks of Hindmarsh-Rose neurons, we show that there is always an extended region of stable synchronous activity corresponding to low coupling strengths. Such synchrony could be achieved in the undelayed system only by much higher coupling strengths. This phenomenon of enhanced neural synchrony by delay has important implications, in particular, in understanding synchronization of distant neurons and information processing in the brain.