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• W2978847428 abstract "We present an investigation of self-organized multiarmed spiral waves pinned to unexcitable circular obstacles in a thin layer of the excitable Belousov-Zhabotinsky reaction and in simulations using the Oregonator model. The multiarmed waves are initiated by a series of wave stimuli. In the proximity of the obstacle boundary, the wave rotation around the obstacle causes damped oscillations of the wave periods of all spiral arms. The dynamics of wave periods cause the wave velocities as well as the angular displacements between the adjacent arms to oscillate with decaying amplitudes. Eventually, all displacements approach approximately the same stable value so that all arms are distributed evenly around the obstacle. A further theoretical analysis reveals that the temporal dynamics of the angular displacements can be interpreted as underdamped harmonic oscillations. Far from the obstacles, the wave dynamics are less pronounced. The wave period becomes stable very soon after the initiation. When the number of spiral arms increases, the rotation of individual arms slows down but the wave period of the multiarmed spiral waves decreases. Due to their short period, multiarmed spiral waves emerging in the heart potentially result in severe pathological conditions." @default.
• W2978847428 created "2019-10-10" @default.
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• W2978847428 date "2019-10-02" @default.
• W2978847428 modified "2023-09-24" @default.
• W2978847428 title "Self-organization of multiarmed spiral waves in excitable media" @default.
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• W2978847428 doi "https://doi.org/10.1103/physreve.100.042203" @default.
• W2978847428 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/31771004" @default.
• W2978847428 hasPublicationYear "2019" @default.
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