Statistical characterization of an ensemble of functional neural networks

Detalhes bibliográficos
Autor(a) principal: Silva, B. B. M.
Data de Publicação: 2012
Outros Autores: Miranda, José Garcia Vivas, Andrade, Roberto Fernandes Silva, Corso, G., Copelli, M., Vasconcelos, N., Ribeiro, S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/16565
Resumo: Texto completo: acesso restrito. p. 1-9
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spelling Silva, B. B. M.Miranda, José Garcia VivasAndrade, Roberto Fernandes SilvaCorso, G.Copelli, M.Vasconcelos, N.Ribeiro, S.Silva, B. B. M.Miranda, José Garcia VivasAndrade, Roberto Fernandes SilvaCorso, G.Copelli, M.Vasconcelos, N.Ribeiro, S.2014-11-11T18:06:02Z20121434-6028http://repositorio.ufba.br/ri/handle/ri/16565v. 85, n. 10Texto completo: acesso restrito. p. 1-9This work uses a complex network approach to analyze temporal sequences of electrophysiological signals of brain activity from freely behaving rats. A network node represents a neuron and a network link is included between a pair of nodes whenever their firing rates are correlated. The framework of time varying graph (TVG) is used to deal with a very large number (>30 000) of time dependent networks, which are set up by taking into account correlations between neuron firing rates in a moving time lag window of suitable width. Statistical distributions for the following network measures are obtained: size of the largest connected cluster, number of edges, average node degree, and average minimal path. We find that the number of networks with highly correlated activity in distinct brain areas has a fat-tailed distribution, irrespective of the behavioral state of the animal. This contrasts with short-tailed distributions for surrogates obtained by shuffling the original data, and reflects the fact that neurons in the neocortex and hippocampus often act in precise temporal coordination. Our results also suggest that functional neuronal networks at the millimeter scale undergo statistically nontrivial rearrangements over time, thus delimitating an empirical constraint for models of brain activity.Submitted by Edileide Reis (leyde-landy@hotmail.com) on 2014-05-29T12:56:07Z No. of bitstreams: 1 B. B. M. Silva.pdf: 1414870 bytes, checksum: 4abf1341bbfe0b16cdcc798e0d7d606e (MD5)Approved for entry into archive by Alda Lima da Silva (sivalda@ufba.br) on 2014-11-11T18:06:02Z (GMT) No. of bitstreams: 1 B. B. M. Silva.pdf: 1414870 bytes, checksum: 4abf1341bbfe0b16cdcc798e0d7d606e (MD5)Made available in DSpace on 2014-11-11T18:06:02Z (GMT). No. of bitstreams: 1 B. B. M. Silva.pdf: 1414870 bytes, checksum: 4abf1341bbfe0b16cdcc798e0d7d606e (MD5) Previous issue date: 2012http://dx.doi.org/10.1140/epjb/e2012-30481-7reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAStatistical characterization of an ensemble of functional neural networksEuropean Physical Journal Binfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01info:eu-repo/semantics/openAccessengLICENSElicense.txtlicense.txttext/plain1345https://repositorio.ufba.br/bitstream/ri/16565/2/license.txt0d4b811ef71182510d2015daa7c8a900MD52ORIGINALB. B. M. Silva.pdfB. B. 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dc.title.pt_BR.fl_str_mv Statistical characterization of an ensemble of functional neural networks
dc.title.alternative.pt_BR.fl_str_mv European Physical Journal B
title Statistical characterization of an ensemble of functional neural networks
spellingShingle Statistical characterization of an ensemble of functional neural networks
Silva, B. B. M.
title_short Statistical characterization of an ensemble of functional neural networks
title_full Statistical characterization of an ensemble of functional neural networks
title_fullStr Statistical characterization of an ensemble of functional neural networks
title_full_unstemmed Statistical characterization of an ensemble of functional neural networks
title_sort Statistical characterization of an ensemble of functional neural networks
author Silva, B. B. M.
author_facet Silva, B. B. M.
Miranda, José Garcia Vivas
Andrade, Roberto Fernandes Silva
Corso, G.
Copelli, M.
Vasconcelos, N.
Ribeiro, S.
author_role author
author2 Miranda, José Garcia Vivas
Andrade, Roberto Fernandes Silva
Corso, G.
Copelli, M.
Vasconcelos, N.
Ribeiro, S.
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Silva, B. B. M.
Miranda, José Garcia Vivas
Andrade, Roberto Fernandes Silva
Corso, G.
Copelli, M.
Vasconcelos, N.
Ribeiro, S.
Silva, B. B. M.
Miranda, José Garcia Vivas
Andrade, Roberto Fernandes Silva
Corso, G.
Copelli, M.
Vasconcelos, N.
Ribeiro, S.
description Texto completo: acesso restrito. p. 1-9
publishDate 2012
dc.date.issued.fl_str_mv 2012
dc.date.accessioned.fl_str_mv 2014-11-11T18:06:02Z
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dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://repositorio.ufba.br/ri/handle/ri/16565
dc.identifier.issn.none.fl_str_mv 1434-6028
dc.identifier.number.pt_BR.fl_str_mv v. 85, n. 10
identifier_str_mv 1434-6028
v. 85, n. 10
url http://repositorio.ufba.br/ri/handle/ri/16565
dc.language.iso.fl_str_mv eng
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