Motion of spiral tip driven by local forcing in excitable media
We study the motion of a spiral wave controlled by a local periodic forcing imposed on a region around the spiral tip in an excitable medium. Three types of trajectories of spiral tip are observed： the epicycloid-like meandering, the resonant drift, and the hypocycloid-like meandering. The frequency...
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| Veröffentlicht in: | Chinese physics B 2014-05, Vol.23 (5), p.123-128, Article 050502 |
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| creator | 刘贵泉 应和平 |
| description | We study the motion of a spiral wave controlled by a local periodic forcing imposed on a region around the spiral tip in an excitable medium. Three types of trajectories of spiral tip are observed： the epicycloid-like meandering, the resonant drift, and the hypocycloid-like meandering. The frequency of the spiral is sensitive to the local periodic forcing. The dependency of spiral frequency on the amplitude and size of local periodic forcing are presented. In addition, we show how the drift speed and direction are adjusted by the amplitude and phase of local periodic forcing, which is consistent with a theoretical analysis based on the weak deformation approximation. |
| doi_str_mv | 10.1088/1674-1056/23/5/050502 |
| format | Article |
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Three types of trajectories of spiral tip are observed： the epicycloid-like meandering, the resonant drift, and the hypocycloid-like meandering. The frequency of the spiral is sensitive to the local periodic forcing. The dependency of spiral frequency on the amplitude and size of local periodic forcing are presented. 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| identifier | ISSN: 1674-1056 |
| ispartof | Chinese physics B, 2014-05, Vol.23 (5), p.123-128, Article 050502 |
| issn | 1674-1056 2058-3834 1741-4199 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1762071539 |
| source | IOP Publishing Journals |
| subjects | Adjustment Amplitudes Approximation Drift Excitation Mathematical analysis Spirals Trajectories 依赖性 周期性 振幅和 漂移速度 激发介质 螺旋波 运动 驱动 |
| title | Motion of spiral tip driven by local forcing in excitable media |
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