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dc.contributor.authorMasoller Alonso, Cristina
dc.contributor.authorTorrent Serra, Maria del Carmen
dc.contributor.authorGarcía Ojalvo, Jordi
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear
dc.identifier.citationMasoller, C.; Torrent, M.C.; Garcia-Ojalvo, J. Dynamics of globally delay-coupled neurons displaying subthreshold oscillations. "Philosophical transactions of the Royal Society of London. Series A, mathematical and physical sciences", Agost 2009, vol. 367, p. 3255-3266.
dc.description.abstractWe study an ensemble of neurons that are coupled through their time-delayed collective mean field. The individual neuron is modelled using a Hodgkin–Huxley-type conductance model with parameters chosen such that the uncoupled neuron displays autonomous subthreshold oscillations of the membrane potential. We find that the ensemble generates a rich variety of oscillatory activities that are mainly controlled by two time scales: the natural period of oscillation at the single neuron level and the delay time of the global coupling. When the neuronal oscillations are synchronized, they can be either in-phase or out-of-phase. The phase-shifted activity is interpreted as the result of a phase-flip bifurcation, also occurring in a set of globally delay-coupled limit cycle oscillators. At the bifurcation point, there is a transition from in-phase to out-of-phase (or vice versa) synchronized oscillations, which is accompanied by an abrupt change in the common oscillation frequency. This phase-flip bifurcation was recently investigated in two mutually delay-coupled oscillators and can play a role in the mechanisms by which the neurons switch among different firing patterns.
dc.format.extent12 p.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Física
dc.titleDynamics of globally delay-coupled neurons displaying subthreshold oscillations
dc.contributor.groupUniversitat Politècnica de Catalunya. DONLL - Dinàmica no Lineal, Òptica no Lineal i Làsers
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
local.citation.authorMasoller, C.; Torrent, M.C.; Garcia-Ojalvo, J.
local.citation.publicationNamePhilosophical transactions of the Royal Society of London. Series A, mathematical and physical sciences

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