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广西师范大学学报(自然科学版) ›› 2020, Vol. 38 ›› Issue (1): 107-113.doi: 10.16088/j.issn.1001-6600.2020.01.014
谭安杰, 韦笃取*, 覃英华
TAN Anjie, WEI Duqu*, QIN Yinghua
摘要: 神经元电活动依赖于外界刺激及其感应电流,而细胞内部离子穿越细胞膜会诱发时变磁场。此外,每个细胞膜表面都被视为具有复杂电荷分布的带电体,会产生感应电场。因此,在传统的神经元模型中引入电磁场变量并研究电磁场耦合对神经网络集体动力学行为的影响具有实际意义。本文提出一种考虑电场和磁场的神经网络模型,其中采用磁控忆阻器模拟细胞内的电磁感应效应,描述磁通量和膜电位之间耦合。通过数值仿真研究电磁感应对神经网络的放电模式转换以及网络同步行为的影响,发现电场和磁场感应可以诱导神经元电活动模式发生转变,还发现突触连接的增强更能促进神经网络同步行为。本文考虑电磁场对神经元的作用,研究结果可望为认识神经系统的信号编码和传播机制提供新的见解。
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[1] | 李雅岱, 韦笃取. 含磁场耦合忆阻神经网络放电行为研究[J]. 广西师范大学学报(自然科学版), 2020, 38(3): 19-24. |
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