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Noise-induced up/down dynamics in scale-free neuronal networks
dc.contributor.author | Grau Moya, Jordi |
dc.contributor.author | Pons Rivero, Antonio Javier |
dc.contributor.author | García Ojalvo, Jordi |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear |
dc.date.accessioned | 2012-09-20T17:49:56Z |
dc.date.available | 2012-09-20T17:49:56Z |
dc.date.created | 2012-07-31 |
dc.date.issued | 2012-07-31 |
dc.identifier.citation | Grau-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.issn | 0218-1274 |
dc.identifier.uri | http://hdl.handle.net/2117/16547 |
dc.description.abstract | Cortical 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.extent | 11 p. |
dc.language.iso | eng |
dc.rights | Attribution 4.0 |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ |
dc.subject | Àrees temàtiques de la UPC::Ciències de la salut::Medicina::Neurologia |
dc.subject.lcsh | Computational neuroscience |
dc.subject.other | Up/down states |
dc.subject.other | Neuronal noise |
dc.subject.other | Scale-free neuronal networks |
dc.title | Noise-induced up/down dynamics in scale-free neuronal networks |
dc.type | Article |
dc.subject.lemac | Neurociència computacional |
dc.contributor.group | Universitat Politècnica de Catalunya. DONLL - Dinàmica no Lineal, Òptica no Lineal i Làsers |
dc.identifier.doi | 10.1142/S0218127412501751 |
dc.relation.publisherversion | http://dx.doi.org/10.1142/S0218127412501751 |
dc.rights.access | Open Access |
local.identifier.drac | 10772690 |
dc.description.version | Postprint (published version) |
dc.date.lift | 10000-01-01 |
local.citation.author | Grau-Moya, J.; Pons, A. J.; Garcia-Ojalvo, J. |
local.citation.publicationName | International journal of bifurcation and chaos |
local.citation.volume | 22 |
local.citation.number | 7 |
local.citation.startingPage | 1 |
local.citation.endingPage | 11 |
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