Boundary-driven delayed-feedback control of spatiotemporal dynamics in excitable media
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arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866914175196856320 |
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| author | Echeverria-Alar, Sebastian Rappel, Wouter-Jan |
| author_facet | Echeverria-Alar, Sebastian Rappel, Wouter-Jan |
| contents | Scroll-wave instabilities in excitable domains are central to life-threatening arrhythmias, yet practical methods to stabilize these dynamics remain limited. Here, we investigate the effects of boundary layer heterogeneities in the spatiotemporal dynamics of a quasi-2D semidiscrete excitable model. We reveal that a novel boundary-driven mechanism suppresses meandering and chaotic spiral dynamics. We show how the strength of the heterogeneities mediates the emergence of this regulation through a pinning-unpinning-like transition. We derive a reduced 2D model and find that a decrease in bulk excitability and a boundary-driven delayed-feedback underlie the stabilization. Our results may point to alternative methods to control arrhythmias. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_00183 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Boundary-driven delayed-feedback control of spatiotemporal dynamics in excitable media Echeverria-Alar, Sebastian Rappel, Wouter-Jan Biological Physics Scroll-wave instabilities in excitable domains are central to life-threatening arrhythmias, yet practical methods to stabilize these dynamics remain limited. Here, we investigate the effects of boundary layer heterogeneities in the spatiotemporal dynamics of a quasi-2D semidiscrete excitable model. We reveal that a novel boundary-driven mechanism suppresses meandering and chaotic spiral dynamics. We show how the strength of the heterogeneities mediates the emergence of this regulation through a pinning-unpinning-like transition. We derive a reduced 2D model and find that a decrease in bulk excitability and a boundary-driven delayed-feedback underlie the stabilization. Our results may point to alternative methods to control arrhythmias. |
| title | Boundary-driven delayed-feedback control of spatiotemporal dynamics in excitable media |
| topic | Biological Physics |
| url | https://arxiv.org/abs/2409.00183 |