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Related Experiment Videos

Predicting filament drift in twisted anisotropy.

M Wellner1, O Berenfeld, A M Pertsov

  • 1Department of Pharmacology, SUNY Health Science Center at Syracuse, Syracuse, New York 132102, USA.

Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
|October 25, 2000
PubMed
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This study analyzes scroll wave filament dynamics in cardiac tissue with twisted anisotropy. The research analytically derives filament trajectory, confirming earlier simulations and predicting perpendicular alignment for sparse scrolls.

Area of Science:

  • Biophysics
  • Cardiac Electrophysiology
  • Nonlinear Dynamics

Background:

  • Excitable media with twisted anisotropy are crucial for understanding wave propagation in heart tissue.
  • Intramural scroll waves and their filament dynamics are key to cardiac function and dysfunction.

Purpose of the Study:

  • To analytically derive the trajectory of intramural scroll wave filaments in cardiac tissue with twisted anisotropy.
  • To investigate filament stabilization and equilibrium alignment relative to cardiac fiber orientation.

Main Methods:

  • Analytical derivation of scroll wave filament trajectory.
  • Comparison of analytical predictions with existing numerical simulation data.

Main Results:

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  • The analytical model accurately predicts filament trajectory, showing good agreement with numerical data.
  • A prediction of equilibrium alignment perpendicular to cardiac fibers for sufficiently sparse scrolls is established.

    • Conclusions:

    • The study provides an analytical framework for understanding scroll wave filament dynamics in complex cardiac tissue.
    • The findings offer insights into mechanisms of cardiac arrhythmias and potential therapeutic targets.