Spiral Turbulence: From the Oxidation of CO on Pt(110) to Ventricular   Fibrillation
  We give a brief overview of systems that show spiral patterns and spatiotemporally chaotic states. We concentrate on two physical systems: (1) the oxidation of CO on Pt(110) and (2) ventricular fibrillation in hearts. The equations that have been suggested as simple models for these two different systems are closely related for they are both {\it excitable media}. We present these equations and give a short summary of the phenomena they yield.} 
Ashwin Pande (1), Sitabhra Sinha (1 and 2), Rahul Pandit (1 and 2)   ((1) Department of Physics, Indian Institute of Science...