海若螺平衡囊神经系统的混沌特性  

Chaos property of statocyst systems of Clione

作　　者：刘深泉[1] 范涛[1] 

机构地区：[1]华南理工大学数学科学学院,广州510640

出　　处：《医用生物力学》2006年第1期38-42,共5页Journal of Medical Biomechanics

基　　金：国家自然科学基金资助项目(19902005);国家自然科学基金重点项目(10432010)

摘　　要：目的分析软体动物海若螺的平衡囊运动特性。方法利用(WinnerlessCompetition,WLC)模型数值研究运动神经系统的电位发放,计算神经元发放的Liapunov指数。结果结果显示:一般情形下,神经元的电位发放序列具有负的Liapunov指数;特殊外界刺激下,Liapunov指数出现正值。结论海若螺平衡囊神经系统有不同的稳定状态,稳定状态之间通过混沌来转化,海若螺运动系统具有边缘混沌特性。Objective This paper analyze the locomotion property of statocyst of marine mollusk Clione limacine. Method We used here are WLC model to study electric spike of neural system and to simulate Lia- punov index of the spike neuron. Result The results show the Liapunov index of the neural electric spike appears negative in general situation and appears positive in special external stimulus. Conclusion The locomotion of statocyst of marine mollusk Clione limacine have different steady states and the two steady states can be change from chaos. This is the boundary of chaos property of motor systems of Clione.

关 键 词：海若螺 数值WLC模型 神经元 神经系统 电位发放 抑制 LIAPUNOV指数 

分 类 号：R318.04[医药卫生—生物医学工程] Q811[医药卫生—基础医学]