Role of refractory period in homoclinic models of neural synchronization (Articolo in rivista)

Type
Label
  • Role of refractory period in homoclinic models of neural synchronization (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1142/S0129065707000956 (literal)
Alternative label
  • Arecchi, F. T.; Montina, A.; Mendoza, C. (2007)
    Role of refractory period in homoclinic models of neural synchronization
    in International journal of neural systems; World Scientific Publ. Co. Pte. Ltd., Singapore (Singapore)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Arecchi, F. T.; Montina, A.; Mendoza, C. (literal)
Pagina inizio
  • 79 (literal)
Pagina fine
  • 86 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 17 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 2 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Dip. di Fisica, Università di Firenze, Via Sansone 1, 50019 Sesto Fiorentino (FI), Italy; Institute of Physics, Pontifical Catholic University of Valparaiso, Chile; CNR - Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy (literal)
Titolo
  • Role of refractory period in homoclinic models of neural synchronization (literal)
Abstract
  • We study the properties of a homoclinic model of neuron by introducing a suitable one-dimensional map. We show that the system is characterized by a response time to external signals which is a decreasing function of the signal strength, in contrast to excitable models whose response time is signal-independent. In a one-dimensional array of these systems with bidirectional coupling, we observe a sudden transition to a synchronized state at a certain value of the coupling strength. The transition occurs when the response time of a site to the signals of the adjacent sites is of the order of refractory time. Near the transition, we find an intermittent behavior due to the competition between a turbulent and a synchronized state. The observed behavior distinguishes homoclinic systems from excitable systems. (literal)
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