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DY: Fachverband Dynamik und Statistische Physik

DY 7: Poster I

DY 7.22: Poster

Montag, 11. März 2013, 17:30–19:30, Poster C

Nonlocal control of pulse propagation in excitable media — •Clemens Bachmair and Eckehard Schöll — Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany

We discuss the effects of nonlocal control on propagating waves in excitable media. As a generic model we use a spatially extended FitzHugh-Nagumo system which locally couples with a diffusion term in the activator variable. The control is implemented in a non-invasive way by a convolution with different kernel. A particular focus is placed on the mexican hat function due to its significance in neuroscience. The control gives rise to different phenomena such as wave supression, multiple peak waves and more complex spatiotemporal patterns such as a spiking traveling wave.