多样性对耦合神经元系统全局响应的建设性作用
The constructive role of diversity on the global response of coupled neuron systems
摘要：
我们研究了耦合可兴奋神经元的集合的元素之间存在的异质性对系统对外部信号的集体响应的影响。我们已经考虑了两种不同的相互作用的情况下，其中一个是神经元扩散耦合，另一个是神经元通过脉冲状信号相互作用。我们发现，神经元之间的相互作用的类型在确定系统对外部调制的响应中起着至关重要的作用。我们发展了一个基于序参量展开的平均场论，定量地再现了扩散耦合情况下的数值结果。
英文摘要：
We study the effect that the heterogeneity present among the elements of an ensemble of coupled excitable neurons have on the collective response of the system to an external signal. We have considered two different interaction scenarios, one in which the neurons are diffusively coupled and another in which the neurons interact via pulse-like signals. We found that the type of interaction between the neurons has a crucial role in determining the response of the system to the external modulation. We develop a mean-field theory based on an order parameter expansion that quantitatively reproduces the numerical results in the case of diffusive coupling.
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