Estimation of Activation Sequences of Heart Using Cardiac Cell Models

One of the most common causes of death globally in the past few years is cardiac arrhythmia (irregular heartbeat), which occurs when the electric signals that coordinate the heartbeat don't work appropriately. As a result, there is a need to focus on understanding the basic mechanisms of heart rhythm variations. This paper focuses on cardiac excitation and uses a model replicating the electrical behavior of heart cells to generate an action potential. The activation times of the selected sources on the heart's surface from ECGSIM were compared with those generated using an electronic circuit model. The findings indicated a good match between the simulation results with a minimal error rate of milliseconds. The computational modeling of the electrical model of the cardiac cell was performed to explore the effect of the space or length constant (λ), which measures how well a potential spreads along the heart cell as a function of distance.