Taming Winfree turbulence of scroll waves in excitable media
Winfree turbulence of scroll waves is a special kind of spatiotemporal chaos that exists exclusively in three-dimensional excitable media and is currently considered one of the principal mechanisms of cardiac fibrillation. A chaotic wave pattern develops through the negative-tension instability of v...
| Autores: | , , |
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| Formato: | artículo |
| Fecha de publicación: | 2003 |
| País: | España |
| Recursos: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/176974 |
| Acesso em linha: | https://hdl.handle.net/2117/176974 https://dx.doi.org/10.1126/science.1080207 |
| Access Level: | acceso abierto |
| Palavra-chave: | Turbulence Fluid dynamics Fluid mechanics Eddies Turbulència Dinàmica de fluids Mecànica de fluids Remolins (Mecànica de fluids) Àrees temàtiques de la UPC::Física::Física de fluids |
| Resumo: | Winfree turbulence of scroll waves is a special kind of spatiotemporal chaos that exists exclusively in three-dimensional excitable media and is currently considered one of the principal mechanisms of cardiac fibrillation. A chaotic wave pattern develops through the negative-tension instability of vortex filaments, which tend to spontaneously stretch, bend, loop, and produce an expanding tangle that fills up the volume. We demonstrate that such turbulence can readily be controlled by weak nonresonant modulation of the medium excitability. Depending on the forcing frequency, either suppression or induction of turbulence can be achieved. |
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