| 激发介质中去极化对螺旋波动力学影响的数值研究 |
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| 引用本文： | 黎广钊,唐国宁.激发介质中去极化对螺旋波动力学影响的数值研究[J].计算物理,2011,28(4):626-632. |
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| 作者姓名： | 黎广钊 唐国宁 |
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| 作者单位： | 广西师范大学物理科学与技术学院, 广西 桂林 541004 |
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| 基金项目： | 国家自然科学基金(批准号:10765002,10947011)资助项目 |
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| 摘 要： | 考虑可激发介质的不应态可以被激发,在Bar模型中引入去极化行为,研究去极化对稳定螺旋波的影响.数值模拟结果显示,适当选择去极化阈值、去极化激发时间,可以使螺旋波漂移、漫游,甚至使螺旋波漫游出系统边界,还可以使系统出现宽臂螺旋波、双臂螺旋波、双峰波、多个螺旋波共存、时空混沌等现象.对产生这些现象的机理进行了分析.
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| 关 键 词： | 螺旋波 去极化 可激发介质 |
| 收稿时间： | 2010-07-12 |
| 修稿时间： | 2010-12-14 |
Numerical Study on Depolarization in Dynamics of Spiral Waves in Excitable Media |
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| LI Guangzhao,TANG Guoning.Numerical Study on Depolarization in Dynamics of Spiral Waves in Excitable Media[J].Chinese Journal of Computational Physics,2011,28(4):626-632. |
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| Authors: | LI Guangzhao TANG Guoning |
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| Institution: | College of Physics and Technology, Guangxi Normal University, Guilin 541004, China |
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| Abstract: | Since refractory states of an excitable medium can be excited,depolarization is introduced into the Bar model.Depolarization effects on spiral waves are investigated.It shows that as threshold of depolarization and depolarization duration are chosen suitably,depolarization can induce drifting and meandering of spiral wave and even cause spiral wave moving out of boundary of the system.The dense spiral wave,two-arm spiral wave,twin speaks wave,multiple spiral wave and spatiotemporal chaos can also be generat... |
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| Keywords: | spiral wave depolarization excitable medium |
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