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Updated: Jan 22, 2026

Control of Eating Behavior Using a Novel Feedback System
Published on: May 8, 2018
Boundary-Driven Delayed-Feedback Control of Spatiotemporal Dynamics in Excitable Media
Sebastián Echeverría-Alar1, Wouter-Jan Rappel1
1University of California, Department of Physics, San Diego, California 92093, USA.
Abstract:
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.
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