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Learning and detecting emergent behavior in networks of cardiac myocytes

Published: 01 March 2009 Publication History

Abstract

We address the problem of specifying and detecting emergent behavior in networks of cardiac myocytes, spiral electric waves in particular, a precursor to atrial and ventricular fibrillation. To solve this problem we: (1) apply discrete mode abstraction to the cycle-linear hybrid automata (CLHA) we have recently developed for modeling the behavior of myocyte networks; (2) introduce the new concept of spatial superposition of CLHA modes; (3) develop a new spatial logic, based on spatial superposition, for specifying emergent behavior; (4) devise a new method for learning the formulae of this logic from the spatial patterns under investigation; and (5) apply bounded model checking to detect the onset of spiral waves. We have implemented our methodology as the EMERALD tool suite, a component of our EHA framework for specification, simulation, analysis, and control of excitable hybrid automata. We illustrate the effectiveness of our approach by applying EMERALD to the scalar electrical fields produced by our CELLEXCITE simulation environment for excitable-cell networks.

Supplementary Material

Learning and Detecting Emergent Behavior in Networks of Cardiac Myocytes (hscc2008.ppt)
Presentation by Radu Grosu at the 11th International Conference on Hybrid Systems: Computation and Control, St. Louis, MO, U.S.A., April 2008

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Published In

cover image Communications of the ACM
Communications of the ACM  Volume 52, Issue 3
Being Human in the Digital Age
March 2009
138 pages
ISSN:0001-0782
EISSN:1557-7317
DOI:10.1145/1467247
Issue’s Table of Contents
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Association for Computing Machinery

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Publication History

Published: 01 March 2009
Published in CACM Volume 52, Issue 3

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