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Related Concept Videos

Cardiac Action Potential01:30

Cardiac Action Potential

Cardiac action potentials are essential for proper heart function, enabling the rhythmic contractions needed for adequate blood circulation. Nodal cells and Purkinje fibers, specialized for electrical conduction, generate these action potentials.
The cardiac action potential process involves a series of phases characterized by the movement of ions across the cardiac cell membranes, leading to the depolarization and repolarization of the cardiac myocytes.
Ionic Basis of Cardiac Action Potentials

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Related Experiment Video

Updated: Jun 14, 2026

Patient-specific Modeling of the Heart: Estimation of Ventricular Fiber Orientations
12:09

Patient-specific Modeling of the Heart: Estimation of Ventricular Fiber Orientations

Published on: January 8, 2013

[Algorithm study on the three-dimensional cardiac tissue based on the model of ventricular action potential].

Hong Zhang1, Lequn Ming, Yinbin Jin

  • 1School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China. maxr@263.net

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi = Journal of Biomedical Engineering = Shengwu Yixue Gongchengxue Zazhi
|March 27, 2010
PubMed
Summary

This study presents a 3D virtual heart model for simulating cardiac arrhythmias. The alternate direction iterative (ADI) method offers a stable and computationally efficient solution for electrophysiology simulations.

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Last Updated: Jun 14, 2026

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Creating a Structurally Realistic Finite Element Geometric Model of a Cardiomyocyte to Study the Role of Cellular Architecture in Cardiomyocyte Systems Biology

Published on: April 18, 2018

Area of Science:

  • Computational electrophysiology
  • Cardiac modeling

Context:

  • Cardiac reentry is a key factor in arrhythmias like ventricular tachycardia (VT) and ventricular fibrillation (VF), leading to sudden cardiac death.
  • Accurate computational models are crucial for quantitative electrophysiology studies.

Purpose:

  • To develop and numerically solve a 3D virtual heart model for simulating cardiac electrophysiology.
  • To evaluate the efficiency and stability of numerical algorithms for solving the model.

Summary:

  • A 3D virtual heart model was constructed by integrating the Luo-Rudy 1991 ventricular cell model with a diffusion equation.
  • The operator splitting method, specifically the alternate direction iterative (ADI) format and a seven-point centered difference method, was employed to solve the partial differential equations.
  • Results demonstrate that the ADI format provides excellent numerical stability for membrane potential and electrical activity, significantly reducing computational cost compared to other methods.

Impact:

  • The ADI method offers a powerful and efficient approach for numerical simulations in cardiac electrophysiology.
  • This work facilitates advanced virtual heart simulations, aiding in the understanding and treatment of cardiac arrhythmias.