电磁刺激对FHN神经元系统的调控作用

本文系统地研究了外加电磁刺激对FitzHugh-Nagum。(FHN)神经元系统动力学行为的调控作用。首先,在强非线性电磁感应的作用下,FHN神经元对外加电磁刺激的响应呈现显著的非线性变化特点,不仅能够产生混沌的放电现象,而且还出现了不同放电模式之间的转迁。其次,在电磁感应的作用下,周期振g的电磁刺激对Newman-Watts小世界的神经元网络的脉冲放电频率和同步性都能够进行有效地调控,不仅提高了神经元网络对局部弱激励信号的探测和响应能力,而且能有效地控制网络时空斑图从相位同步到完全同步的演化。本文的研究揭示了电磁刺激对单个神经元和神经元网络系统动力学行为的显著调控能力,有待为生理上应用电磁刺激辅助治疗精神疾病提供理论指导。

Regulation of electromagnetic stimulation on FHN neuronal system

The effects of applied electromagnetic stimulation on discharge behaviors and pattern dynamics of a FitzHugh Nagumo (FHN) neuronal system are studied systematically.Firstly,under the action of strong nonlinear electromagnetic induction,the regulation of applied electromagnetic stimulation on FHN neurons shows a significant nonlinear variation,which not only induce the chaotic phenomena,but also give rise to the transition between different discharge modes.Secondly,the periodic oscillating electromagnetic stimulation can effectively regulate the spiking frequency and synchronization of Newman Watts small world neuronal networks under electromagnetic induction,not only enhancing the detection and response ability to local weak excitation signals,but also effectively controlling the evolution of spatiotemporal patterns from phase synchronization to complete synchronization.This reveals the significant regulatory ability of applied electromagnetic stimulation on the dynamic behaviors of the neuronal system.The study could provide theoretical guidance for applying electromagnetic stimulation to treat certain mental diseases.