Forced entrainment and elimination of spiral waves for the FitzHugh-Nagumo equation

Hidetsugu Sakaguchi, Takefumi Fujimoto

    研究成果: Contribution to journalArticle査読

    9 被引用数 (Scopus)

    抄録

    We study some effects of spatial inhomogeneity and external forcing on spiral waves in the FitzHugh-Nagumo equation and attempt in a numerical investigation to eliminate spiral patterns using "entrainment" and "trapping". We find that a target pattern generated by circular fast pacemaker region can overwhelm a spiral pattern and eliminate spiral waves. We also find that a spiral pattern can be trapped in a less excitable region. Through control of this less excitable region, a pair of spirals can be annihilated. In addition, it is shown that spiral waves are entrained and disappear under a spatially uniform periodic forcing if the forcing is sufficiently strong. We discuss two mechanisms causing complete entrainment.

    本文言語英語
    ページ(範囲)241-252
    ページ数12
    ジャーナルProgress of Theoretical Physics
    108
    2
    DOI
    出版ステータス出版済み - 8 1 2002

    All Science Journal Classification (ASJC) codes

    • 物理学および天文学(その他)

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