波列诱导可激发介质中弱锚定涡的解钉扎
Wave-train induced unpinning of weakly anchored vortices in excitable media
摘要：
可激发介质中的自由涡旋可以被波列位移和消除。然而，简单的物理论证表明，锚定在大型不可激发障碍物上的旋涡不能被类似地移除。我们表明，unpinning的旋涡连接到障碍物小于自由旋涡的核心半径是可能的，通过起搏。解钉扎所需的波列频率随着障碍物的大小而增加，我们提出了这种依赖性的几何解释。我们的模型独立的结果表明，降低介质的兴奋性可以促进起搏诱导的心脏组织中的旋涡的去除。
英文摘要：
A free vortex in excitable media can be displaced and removed by a wave-train. However, simple physical arguments suggest that vortices anchored to large inexcitable obstacles cannot be removed similarly. We show that unpinning of vortices attached to obstacles smaller than the core radius of the free vortex is possible through pacing. The wave-train frequency necessary for unpinning increases with the obstacle size and we present a geometric explanation of this dependence. Our model-independent results suggest that decreasing excitability of the medium can facilitate pacing-induced removal of vortices in cardiac tissue.
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