耦合CPG神经网络的节律分析  

Rhythm analysis of coupled CPG neural network

作　　者：袁泉 徐洁琼[2] 陈慧莹 YUAN Quan;XU Jie-qiong;CHEN Hui-ying(School of Civil and Architectural Engineering,Guangxi University,Nanning 530004,China;School of Mathematics and Information Science,Guangxi University,Nanning 530004,China)

机构地区：[1]广西大学土木建筑工程学院,广西南宁530004 [2]广西大学数学与信息科学学院,广西南宁530004

出　　处：《广西大学学报（自然科学版）》2022年第3期788-796,共9页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金项目(11872154);广西自然科学基金项目(2021GXNSFAA196076)。

摘　　要：为了研究由中间神经元耦合的CPG神经网络对肢体动物节律性步态运动的动力学特性,本文考虑了2个CPG耦合的神经网络,在外界药物刺激影响下,肢体动物左、右肢节律性步态运动模式的转迁以及中间神经元对步态运动的影响;通过分岔理论确定神经元产生周期放电的参数范围;讨论在外界激励变化下,同侧屈伸肌中心的放电周期、静息阶段、兴奋阶段与振幅的变化规律,并表明外界刺激将影响左右肢的同步和交替模式的转迁;通过移除不同的中间神经元路径,讨论中间神经元对步态运动模式转迁的影响。结果表明:左、右中心在不同耦合情形下表现出相同的特征。In order to study the dynamic characteristics of CPG neural network coupled by interneurons on the rhythmic gait movement of limb animals,this paper considered the transition of the rhythmic gait movement patterns of left and right limbs of animals under the influence of external stimulation.Firstly,the parameter range of periodic discharge of neurons was determined by bifurcation theory.Then,with the change of external stimulation,the period,resting phase duration,active phase duration and amplitude of ipsilateral flexor and extensor center activity were analyzed,and it was shown that external stimuli affected the synchronous and alternating patterns of the left and right limbs.Finally,by removing different pathways of interneurons,the influence of interneurons on gait pattern transition was discussed.The results show that the left and right centers show the same characteristics under different coupling situations.

关 键 词：中枢模式发生器 耦合神经网络 神经元放电 分岔分析 同步 

分 类 号：O193[理学—数学] O313[理学—基础数学]