http://www.cnr.it/ontology/cnr/individuo/prodotto/ID7837
Viscoelastic Fizhugh-Nagumo models (Articolo in rivista)
- Type
- Label
- Viscoelastic Fizhugh-Nagumo models (Articolo in rivista) (literal)
- Anno
- 2005-01-01T00:00:00+01:00 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Bini D., Cherubini C., Filippi S. (literal)
- Pagina inizio
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
- Lavoro selezionato per il \"Virtual Journal of
Biological Physics Research\" (numero Novembre 2005), della American
Physical Society and the American Institute of Physics in
cooperation with numerous other societies and publishers. (literal)
- Note
- ISI Web of Science (WOS) (literal)
- Titolo
- Viscoelastic Fizhugh-Nagumo models (literal)
- Abstract
- An extended Fitzhugh-Nagumo model including linear viscoelasticity is derived in general and studied in
detail in the one-dimensional case. The equations of the theory are numerically integrated in two situations: (i) a free insulated fiber activated by an initial Gaussian distribution of action potential, and (ii) clamped fiber
stimulated by two counter phased currents, located at both ends of the space domain. The former case accounts
for a description of the physiological experiments on biological samples in which a fiber contracts because of
the spread of action potential, and then relaxes. The latter case, instead, is introduced to extend recent models
discussing a strongly electrically stimulated fiber so that nodal structures associated on quasistanding waves are
produced. Results are qualitatively in agreement with physiological behavior of cardiac fibers. Modifications
induced on the action potential of a standard Fitzhugh-Nagumo model appear to be very small even when
strong external electric stimulations are activated. On the other hand, elastic backreaction is evident in the
model. (literal)
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