Li Heng, Xie Yong
State Key Laboratory for Strength and Vibration of Mechanical Structures, Shaanxi Engineering Research Center of Nondestructive Testing and Structural Integrity Evaluation, School of Aerospace Engineering, Xi'an Jiaotong University, Xi'an, 710049 China.
Cogn Neurodyn. 2024 Dec;18(6):3847-3858. doi: 10.1007/s11571-024-10169-y. Epub 2024 Aug 31.
Over the past decade, most of researches on the communication between the neurons are based on synapses. However, the changes in action potentials in neurons may produce complex electromagnetic fields in the media, which may also have an impact on the electrical activity of neurons. To explore this factor, we construct a two-layer neuronal network composed of identical Hindmarsh-Rose neurons. Each neuron is connected with its neighbors in the layer via magnetic connections and a neuron in the corresponding position of the other layer via electrical synapse. By adjusting the electrical coupling strength and magnetic coupling strength, we find the appearance of alternating chimera states and transient chimera states whenever the intralayer coupling is nonlocal and local, respectively. According to our study, these phenomena have not been studied in multilayer networks of this structure. And it is found that the transient chimera states only could occur when the number of coupled neighbors is small. In addition, the states of two independent networks will affect the final states of networks applying the same sufficiently large interlayer coupling strength. Our study reveals a possible effect of electrical coupling and ephaptic coupling produced together on the dynamic behavior of the neuronal networks. Meanwhile, our results suggest that it makes sense to take electromagnetic induction into neuronal models.
在过去十年中，大多数关于神经元之间通信的研究都是基于突触的。然而，神经元动作电位的变化可能会在介质中产生复杂的电磁场，这也可能对神经元的电活动产生影响。为了探究这一因素，我们构建了一个由相同的 Hindmarsh-Rose 神经元组成的两层神经网络。每层中的每个神经元通过磁连接与其相邻神经元相连，并通过电突触与另一层相应位置的一个神经元相连。通过调整电耦合强度和磁耦合强度，我们发现每当层内耦合分别为非局部和局部时，会出现交替奇美拉态和瞬态奇美拉态。根据我们的研究，这种结构的多层网络中尚未对这些现象进行研究。并且发现只有当耦合邻居数量较少时才会出现瞬态奇美拉态。此外，两个独立网络的状态会影响应用相同足够大层间耦合强度的网络的最终状态。我们的研究揭示了电耦合和电突触耦合共同产生的对神经网络动态行为的可能影响。同时，我们的结果表明将电磁感应纳入神经元模型是有意义的。
