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dc.contributor.authorGrau Moya, Jordi
dc.contributor.authorPons Rivero, Antonio Javier
dc.contributor.authorGarcía Ojalvo, Jordi
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear
dc.date.accessioned2012-09-20T17:49:56Z
dc.date.available2012-09-20T17:49:56Z
dc.date.created2012-07-31
dc.date.issued2012-07-31
dc.identifier.citationGrau-Moya, J.; Pons, A. J.; Garcia-Ojalvo, J. Noise-induced up/down dynamics in scale-free neuronal networks. "International journal of bifurcation and chaos", 31 Juliol 2012, vol. 22, núm. 7, p. 1-11.
dc.identifier.issn0218-1274
dc.identifier.urihttp://hdl.handle.net/2117/16547
dc.description.abstractCortical neuronal networks are known to exhibit regimes of dynamical activity characterized by periods of elevated firing (up states) separated by silent phases (down states). Here, we show that up/down dynamics may emerge spontaneously in scale-free neuronal networks, provided an optimal amount of noise acts upon all network nodes. Our conclusions are drawn from numerical simulations of networks of subthreshold integrate-and-fire neurons, connected to each other according to a scale-free topology. We study the structure of the up/down regime both in time and in terms of the node degree. We also examine whether localized random perturbations applied to specific network nodes are able to generate up/down dynamics, showing that this regime arises when noisy inputs are applied to low-degree (nonhub) network nodes, but not when they act upon network hubs.
dc.format.extent11 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Ciències de la salut::Medicina::Neurologia
dc.subject.lcshComputational neuroscience
dc.subject.otherUp/down states
dc.subject.otherNeuronal noise
dc.subject.otherScale-free neuronal networks
dc.titleNoise-induced up/down dynamics in scale-free neuronal networks
dc.typeArticle
dc.subject.lemacNeurociència computacional
dc.contributor.groupUniversitat Politècnica de Catalunya. DONLL - Dinàmica no Lineal, Òptica no Lineal i Làsers
dc.identifier.doi10.1142/S0218127412501751
dc.relation.publisherversionhttp://dx.doi.org/10.1142/S0218127412501751
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac10772690
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
local.citation.authorGrau-Moya, J.; Pons, A. J.; Garcia-Ojalvo, J.
local.citation.publicationNameInternational journal of bifurcation and chaos
local.citation.volume22
local.citation.number7
local.citation.startingPage1
local.citation.endingPage11


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Attribution-NonCommercial-NoDerivs 3.0 Spain
Llevat que s'hi indiqui el contrari, els continguts d'aquesta obra estan subjectes a la llicència de Creative Commons : Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya