Topographic aspects of photic driving in the electroencephalogram of children and adolescents

Detalhes bibliográficos
Autor(a) principal: Lazarev,V.V.
Data de Publicação: 2004
Outros Autores: Infantosi,A.F.C., Valencio-de-Campos,D., Azevedo,L.C. de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Medical and Biological Research
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000600014
Resumo: The electroencephalogram amplitude spectra at 11 fixed frequencies of intermittent photic stimulation of 3 to 24 Hz were combined into driving "profiles" for 14 scalp points in 8 male and 7 female normal subjects aged 9 to 17 years. The driving response varied over frequency and was detected in 70 to 100% of cases in the occipital areas (maximum) and in 27 to 77% of cases in the frontal areas (minimum) using as a criterion peak amplitude 20% higher than those of the neighbors. Each subject responded, on average, to 9.7 ± 1.15 intermittent photic stimulation frequencies in the right occipital area and to 6.8 ± 1.97 frequencies in the right frontal area. Most of the driving responses (in relation to the previous background) were significant according to the spectral F-test (a = 0.05), which also detected changes in some cases of low amplitude responses not revealed by the peak criterion. The profiles had two maxima in the alpha and theta bands in all leads. The latter was not present in the background spectra in the posterior areas and was less pronounced in the anterior ones. The weight of the profile theta maximum increased towards the frontal areas where the two maxima were similar, while the profile amplitudes decreased. The profiles repeated the shape of the background spectra, except for the theta band. The interhemispheric correlation between profiles was high. The theta driving detected in all areas recorded suggests a generalized influence of the theta generators in prepubertal and pubertal subjects.
id ABDC-1_ba8b375060ae47c76ec966dc95a711a9
oai_identifier_str oai:scielo:S0100-879X2004000600014
network_acronym_str ABDC-1
network_name_str Brazilian Journal of Medical and Biological Research
repository_id_str
spelling Topographic aspects of photic driving in the electroencephalogram of children and adolescentsElectroencephalogramIntermittent photic stimulationPhotic drivingBrain topographyChildrenAdolescentsThe electroencephalogram amplitude spectra at 11 fixed frequencies of intermittent photic stimulation of 3 to 24 Hz were combined into driving "profiles" for 14 scalp points in 8 male and 7 female normal subjects aged 9 to 17 years. The driving response varied over frequency and was detected in 70 to 100% of cases in the occipital areas (maximum) and in 27 to 77% of cases in the frontal areas (minimum) using as a criterion peak amplitude 20% higher than those of the neighbors. Each subject responded, on average, to 9.7 ± 1.15 intermittent photic stimulation frequencies in the right occipital area and to 6.8 ± 1.97 frequencies in the right frontal area. Most of the driving responses (in relation to the previous background) were significant according to the spectral F-test (a = 0.05), which also detected changes in some cases of low amplitude responses not revealed by the peak criterion. The profiles had two maxima in the alpha and theta bands in all leads. The latter was not present in the background spectra in the posterior areas and was less pronounced in the anterior ones. The weight of the profile theta maximum increased towards the frontal areas where the two maxima were similar, while the profile amplitudes decreased. The profiles repeated the shape of the background spectra, except for the theta band. The interhemispheric correlation between profiles was high. The theta driving detected in all areas recorded suggests a generalized influence of the theta generators in prepubertal and pubertal subjects.Associação Brasileira de Divulgação Científica2004-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000600014Brazilian Journal of Medical and Biological Research v.37 n.6 2004reponame:Brazilian Journal of Medical and Biological Researchinstname:Associação Brasileira de Divulgação Científica (ABDC)instacron:ABDC10.1590/S0100-879X2004000600014info:eu-repo/semantics/openAccessLazarev,V.V.Infantosi,A.F.C.Valencio-de-Campos,D.Azevedo,L.C. deeng2004-05-28T00:00:00Zoai:scielo:S0100-879X2004000600014Revistahttps://www.bjournal.org/https://old.scielo.br/oai/scielo-oai.phpbjournal@terra.com.br||bjournal@terra.com.br1414-431X0100-879Xopendoar:2004-05-28T00:00Brazilian Journal of Medical and Biological Research - Associação Brasileira de Divulgação Científica (ABDC)false
dc.title.none.fl_str_mv Topographic aspects of photic driving in the electroencephalogram of children and adolescents
title Topographic aspects of photic driving in the electroencephalogram of children and adolescents
spellingShingle Topographic aspects of photic driving in the electroencephalogram of children and adolescents
Lazarev,V.V.
Electroencephalogram
Intermittent photic stimulation
Photic driving
Brain topography
Children
Adolescents
title_short Topographic aspects of photic driving in the electroencephalogram of children and adolescents
title_full Topographic aspects of photic driving in the electroencephalogram of children and adolescents
title_fullStr Topographic aspects of photic driving in the electroencephalogram of children and adolescents
title_full_unstemmed Topographic aspects of photic driving in the electroencephalogram of children and adolescents
title_sort Topographic aspects of photic driving in the electroencephalogram of children and adolescents
author Lazarev,V.V.
author_facet Lazarev,V.V.
Infantosi,A.F.C.
Valencio-de-Campos,D.
Azevedo,L.C. de
author_role author
author2 Infantosi,A.F.C.
Valencio-de-Campos,D.
Azevedo,L.C. de
author2_role author
author
author
dc.contributor.author.fl_str_mv Lazarev,V.V.
Infantosi,A.F.C.
Valencio-de-Campos,D.
Azevedo,L.C. de
dc.subject.por.fl_str_mv Electroencephalogram
Intermittent photic stimulation
Photic driving
Brain topography
Children
Adolescents
topic Electroencephalogram
Intermittent photic stimulation
Photic driving
Brain topography
Children
Adolescents
description The electroencephalogram amplitude spectra at 11 fixed frequencies of intermittent photic stimulation of 3 to 24 Hz were combined into driving "profiles" for 14 scalp points in 8 male and 7 female normal subjects aged 9 to 17 years. The driving response varied over frequency and was detected in 70 to 100% of cases in the occipital areas (maximum) and in 27 to 77% of cases in the frontal areas (minimum) using as a criterion peak amplitude 20% higher than those of the neighbors. Each subject responded, on average, to 9.7 ± 1.15 intermittent photic stimulation frequencies in the right occipital area and to 6.8 ± 1.97 frequencies in the right frontal area. Most of the driving responses (in relation to the previous background) were significant according to the spectral F-test (a = 0.05), which also detected changes in some cases of low amplitude responses not revealed by the peak criterion. The profiles had two maxima in the alpha and theta bands in all leads. The latter was not present in the background spectra in the posterior areas and was less pronounced in the anterior ones. The weight of the profile theta maximum increased towards the frontal areas where the two maxima were similar, while the profile amplitudes decreased. The profiles repeated the shape of the background spectra, except for the theta band. The interhemispheric correlation between profiles was high. The theta driving detected in all areas recorded suggests a generalized influence of the theta generators in prepubertal and pubertal subjects.
publishDate 2004
dc.date.none.fl_str_mv 2004-06-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000600014
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000600014
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0100-879X2004000600014
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Brasileira de Divulgação Científica
publisher.none.fl_str_mv Associação Brasileira de Divulgação Científica
dc.source.none.fl_str_mv Brazilian Journal of Medical and Biological Research v.37 n.6 2004
reponame:Brazilian Journal of Medical and Biological Research
instname:Associação Brasileira de Divulgação Científica (ABDC)
instacron:ABDC
instname_str Associação Brasileira de Divulgação Científica (ABDC)
instacron_str ABDC
institution ABDC
reponame_str Brazilian Journal of Medical and Biological Research
collection Brazilian Journal of Medical and Biological Research
repository.name.fl_str_mv Brazilian Journal of Medical and Biological Research - Associação Brasileira de Divulgação Científica (ABDC)
repository.mail.fl_str_mv bjournal@terra.com.br||bjournal@terra.com.br
_version_ 1754302933039579136