Suppression of spirals and turbulence in inhomogeneous excitable media.
Phys Rev E Stat Nonlin Soft Matter Phys
; 79(6 Pt 2): 066209, 2009 Jun.
Article
em En
| MEDLINE
| ID: mdl-19658585
ABSTRACT
Suppression of spiral and turbulence in inhomogeneous media due to local heterogeneity with higher excitability is investigated numerically. When the inhomogeneity is small, control tactics by boundary periodic forcing (BPF) is effective against the existing spiral and turbulence. When the inhomogeneity of excitability is large, a rotating electric field (REF) is utilized to "smooth" regional heterogeneity based on driven synchronization. Consequently, a control approach combining BPF with REF is proposed to suppress the spiral and turbulence. The underlying mechanism of successful suppression is discussed in terms of dispersion relation.
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Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2009
Tipo de documento:
Article