Berlin 2008 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 13: Cardiac dynamics and reaction-diffusion systems
DY 13.2: Vortrag
Dienstag, 26. Februar 2008, 11:45–12:00, MA 004
Pattern control in a two-dimensional model of cardiac tissue — •Philip Bittihn1, Ulrich Parlitz1, and Stefan Luther2 — 1Drittes Physikalisches Institut, Georg-August-Universität Göttingen, Germany — 2Max-Planck-Institut für Dynamik und Selbstorganisation, Göttingen, Germany
Characteristic spatio-temporal patterns in cardiac tissue are plane waves and spiral waves. Spiral wave breakup may occur leading the system into defect mediated turbulence. In the heart, this transition may lead to a lethal electro-mechanical malfunction of the organ and sudden cardiac death. We demonstrate in a two dimensional numerical simulation that this chaotic spatio-temporal dynamics can be controlled and turned into a state of periodic activation using multiple delay feedback. The application of this approach to experiments and possible limitations will be discussed.