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Volumn 94, Issue 2, 2005, Pages

Global organization of dynamics in oscillatory heterogeneous excitable media

Author keywords

[No Author keywords available]

Indexed keywords

FLUORESCENT DYES; GLOBAL ORGANIZATION; SPIRAL WAVES; THEORETICAL MODEL;

EID: 18144364023     PISSN: 00319007     EISSN: 10797114     Source Type: Journal    
DOI: 10.1103/PhysRevLett.94.028105     Document Type: Article
Times cited : (108)

References (36)
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    • Clusters are formed by joining adjacent excited sites in the (x, y, t) grid, where each site has six adjacent sites. In order to facilitate comparison, the same algorithm was used to group clusters in the data from the experiment and model. The activation wave front in the data was found by taking the first derivative of the calcium fluorescence, and adjusting the threshold value so that wave fronts overlap in adjacent frames. The widths of wave fronts in the model are adjusted to the minimum that allows overlap between wave fronts in adjacent frames. Since the duration of cardiac action potentials is known to be greater than 50 msec, clusters with duration ≤50 msec in the experiment and duration ≤4 iterates in the model were removed from the analysis.


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