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Dynamics of globally delay-coupled neurons displaying subthreshold oscillations
dc.contributor.author | Masoller Alonso, Cristina |
dc.contributor.author | Torrent Serra, Maria del Carmen |
dc.contributor.author | García Ojalvo, Jordi |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear |
dc.date.accessioned | 2010-06-17T16:52:44Z |
dc.date.available | 2010-06-17T16:52:44Z |
dc.date.created | 2009-08 |
dc.date.issued | 2009-08 |
dc.identifier.citation | Masoller, 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.identifier.issn | 0080-4614 |
dc.identifier.uri | http://hdl.handle.net/2117/7728 |
dc.description.abstract | We 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.extent | 12 p. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Física |
dc.subject.lcsh | Oscillations |
dc.title | Dynamics of globally delay-coupled neurons displaying subthreshold oscillations |
dc.type | Article |
dc.subject.lemac | Oscil·lacions |
dc.contributor.group | Universitat Politècnica de Catalunya. DONLL - Dinàmica no Lineal, Òptica no Lineal i Làsers |
dc.identifier.doi | 10.1098/rsta.2009.0096 |
dc.relation.publisherversion | http://rsta.royalsocietypublishing.org/content/367/1901/3255 |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 1187710 |
dc.description.version | Postprint (published version) |
local.citation.author | Masoller, C.; Torrent, M.C.; Garcia-Ojalvo, J. |
local.citation.publicationName | Philosophical transactions of the Royal Society of London. Series A, mathematical and physical sciences |
local.citation.volume | 367 |
local.citation.startingPage | 3255 |
local.citation.endingPage | 3266 |
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