《山东大学学报(理学版)》 ›› 2021, Vol. 56 ›› Issue (5): 1-11.doi: 10.6040/j.issn.1671-9352.0.2020.712
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祁慧敏1,张莉2,安新磊1*,乔帅1,肖冉1
QI Hui-min1, ZHANG Li2, AN Xin-lei1*, QIAO Shuai1, XIAO Ran1
摘要: 通过引入磁通变量实现电磁感应电流对膜电位的调制,建立一类新皮层神经元的四维神经元模型。基于单参数分岔图、双参数分岔图及其相应的最大李雅普诺夫指数图详细地分析该模型的放电特性和分岔模式。数值结果表明,该模型在适当的外界刺激和电磁感应强度作用下会产生复杂的分岔行为,即加周期分岔、倍周期和逆倍周期分岔等。有趣的是,该模型在双参数平面上广泛存在“梳”状的混沌结构,这意味着该模型具有含混沌的加周期分岔模式。同时基于李雅普诺夫稳定性理论证实了该模型在适当的磁通耦合强度下可以达到完全同步,在较强的耦合条件下反而会破坏同步行为。
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