Towards operational definition of postictal stage Spectral entropy as a marker of seizure ending

Autores
Sanz García, Ancor; Vega Zelaya, Lorena; Pastor, Jesús; Sola, Rafael G; Ortega, Guillermo José
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The postictal period is characterized by several neurological alterations, but its exact limits are clinically or even electroencephalographically hard to determine in most cases. We aim to provide quantitative functions or conditions with a clearly distinguishable behavior during the ictal-postictal transition. Spectral methods were used to analyze foramen ovale electrodes (FOE) recordings during the ictal/postictal transition in 31 seizures of 15 patients with strictly unilateral drug resistant temporal lobe epilepsy. In particular, density of links, spectral entropy, and relative spectral power were analyzed. Partial simple seizures are accompanied by an ipsilateral increase in the relative Delta power and a decrease in synchronization in a 66% and 91% of the cases, respectively, after seizures offset. Complex partial seizures showed a decrease in the spectral entropy in 94% of cases, both ipsilateral and contralateral sides (100% and 73%, respectively) mainly due to an increase of relative Delta activity. Seizure offset is defined as the moment at which the “seizure termination mechanisms” actually end, which is quantified in the spectral entropy value. We propose as a definition for the postictal start the time when the ipsilateral SE reaches the first global minimum.
Fil: Sanz García, Ancor. Universidad Autonoma de Madrid. Hospital Universitario de la Princesa. Servicio de Neurocirugia. Grupo de Epilepsia; España
Fil: Vega Zelaya, Lorena. Universidad Autonoma de Madrid. Hospital Universitario de la Princesa. Servicio de Neurocirugia. Grupo de Epilepsia; España
Fil: Pastor, Jesús. Universidad Autonoma de Madrid. Hospital Universitario de la Princesa. Servicio de Neurocirugia. Grupo de Epilepsia; España
Fil: Sola, Rafael G. Universidad Autonoma de Madrid. Hospital Universitario de la Princesa. Servicio de Neurocirugia. Grupo de Epilepsia; España
Fil: Ortega, Guillermo José. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Autonoma de Madrid. Hospital Universitario de la Princesa. Servicio de Neurocirugia. Grupo de Epilepsia; España
Materia
ENTROPY
FORAMEN OVALE ELECTRODES
GRAPH THEORY
LIMBIC NETWORK
POSTICTAL
SYNCHRONIZATION
TEMPORAL LOBE EPILEPSY
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/72859
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/72859
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Towards operational definition of postictal stage Spectral entropy as a marker of seizure endingSanz García, AncorVega Zelaya, LorenaPastor, JesúsSola, Rafael GOrtega, Guillermo JoséENTROPYFORAMEN OVALE ELECTRODESGRAPH THEORYLIMBIC NETWORKPOSTICTALSYNCHRONIZATIONTEMPORAL LOBE EPILEPSYhttps://purl.org/becyt/ford/3.2https://purl.org/becyt/ford/3The postictal period is characterized by several neurological alterations, but its exact limits are clinically or even electroencephalographically hard to determine in most cases. We aim to provide quantitative functions or conditions with a clearly distinguishable behavior during the ictal-postictal transition. Spectral methods were used to analyze foramen ovale electrodes (FOE) recordings during the ictal/postictal transition in 31 seizures of 15 patients with strictly unilateral drug resistant temporal lobe epilepsy. In particular, density of links, spectral entropy, and relative spectral power were analyzed. Partial simple seizures are accompanied by an ipsilateral increase in the relative Delta power and a decrease in synchronization in a 66% and 91% of the cases, respectively, after seizures offset. Complex partial seizures showed a decrease in the spectral entropy in 94% of cases, both ipsilateral and contralateral sides (100% and 73%, respectively) mainly due to an increase of relative Delta activity. Seizure offset is defined as the moment at which the “seizure termination mechanisms” actually end, which is quantified in the spectral entropy value. We propose as a definition for the postictal start the time when the ipsilateral SE reaches the first global minimum.Fil: Sanz García, Ancor. Universidad Autonoma de Madrid. Hospital Universitario de la Princesa. Servicio de Neurocirugia. Grupo de Epilepsia; EspañaFil: Vega Zelaya, Lorena. Universidad Autonoma de Madrid. Hospital Universitario de la Princesa. Servicio de Neurocirugia. Grupo de Epilepsia; EspañaFil: Pastor, Jesús. Universidad Autonoma de Madrid. Hospital Universitario de la Princesa. Servicio de Neurocirugia. Grupo de Epilepsia; EspañaFil: Sola, Rafael G. Universidad Autonoma de Madrid. Hospital Universitario de la Princesa. Servicio de Neurocirugia. Grupo de Epilepsia; EspañaFil: Ortega, Guillermo José. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Autonoma de Madrid. Hospital Universitario de la Princesa. Servicio de Neurocirugia. Grupo de Epilepsia; EspañaMolecular Diversity Preservation International2017-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/72859Sanz García, Ancor; Vega Zelaya, Lorena; Pastor, Jesús; Sola, Rafael G; Ortega, Guillermo José; Towards operational definition of postictal stage Spectral entropy as a marker of seizure ending; Molecular Diversity Preservation International; Entropy; 19; 2; 2-2017; 1-161099-4300CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3390/e19020081info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/1099-4300/19/2/81info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:37:00Zoai:ri.conicet.gov.ar:11336/72859instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:37:01.063CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Towards operational definition of postictal stage Spectral entropy as a marker of seizure ending
title Towards operational definition of postictal stage Spectral entropy as a marker of seizure ending
spellingShingle Towards operational definition of postictal stage Spectral entropy as a marker of seizure ending
Sanz García, Ancor
ENTROPY
FORAMEN OVALE ELECTRODES
GRAPH THEORY
LIMBIC NETWORK
POSTICTAL
SYNCHRONIZATION
TEMPORAL LOBE EPILEPSY
title_short Towards operational definition of postictal stage Spectral entropy as a marker of seizure ending
title_full Towards operational definition of postictal stage Spectral entropy as a marker of seizure ending
title_fullStr Towards operational definition of postictal stage Spectral entropy as a marker of seizure ending
title_full_unstemmed Towards operational definition of postictal stage Spectral entropy as a marker of seizure ending
title_sort Towards operational definition of postictal stage Spectral entropy as a marker of seizure ending
dc.creator.none.fl_str_mv Sanz García, Ancor
Vega Zelaya, Lorena
Pastor, Jesús
Sola, Rafael G
Ortega, Guillermo José
author Sanz García, Ancor
author_facet Sanz García, Ancor
Vega Zelaya, Lorena
Pastor, Jesús
Sola, Rafael G
Ortega, Guillermo José
author_role author
author2 Vega Zelaya, Lorena
Pastor, Jesús
Sola, Rafael G
Ortega, Guillermo José
author2_role author
author
author
author
dc.subject.none.fl_str_mv ENTROPY
FORAMEN OVALE ELECTRODES
GRAPH THEORY
LIMBIC NETWORK
POSTICTAL
SYNCHRONIZATION
TEMPORAL LOBE EPILEPSY
topic ENTROPY
FORAMEN OVALE ELECTRODES
GRAPH THEORY
LIMBIC NETWORK
POSTICTAL
SYNCHRONIZATION
TEMPORAL LOBE EPILEPSY
purl_subject.fl_str_mv https://purl.org/becyt/ford/3.2
https://purl.org/becyt/ford/3
dc.description.none.fl_txt_mv The postictal period is characterized by several neurological alterations, but its exact limits are clinically or even electroencephalographically hard to determine in most cases. We aim to provide quantitative functions or conditions with a clearly distinguishable behavior during the ictal-postictal transition. Spectral methods were used to analyze foramen ovale electrodes (FOE) recordings during the ictal/postictal transition in 31 seizures of 15 patients with strictly unilateral drug resistant temporal lobe epilepsy. In particular, density of links, spectral entropy, and relative spectral power were analyzed. Partial simple seizures are accompanied by an ipsilateral increase in the relative Delta power and a decrease in synchronization in a 66% and 91% of the cases, respectively, after seizures offset. Complex partial seizures showed a decrease in the spectral entropy in 94% of cases, both ipsilateral and contralateral sides (100% and 73%, respectively) mainly due to an increase of relative Delta activity. Seizure offset is defined as the moment at which the “seizure termination mechanisms” actually end, which is quantified in the spectral entropy value. We propose as a definition for the postictal start the time when the ipsilateral SE reaches the first global minimum.
Fil: Sanz García, Ancor. Universidad Autonoma de Madrid. Hospital Universitario de la Princesa. Servicio de Neurocirugia. Grupo de Epilepsia; España
Fil: Vega Zelaya, Lorena. Universidad Autonoma de Madrid. Hospital Universitario de la Princesa. Servicio de Neurocirugia. Grupo de Epilepsia; España
Fil: Pastor, Jesús. Universidad Autonoma de Madrid. Hospital Universitario de la Princesa. Servicio de Neurocirugia. Grupo de Epilepsia; España
Fil: Sola, Rafael G. Universidad Autonoma de Madrid. Hospital Universitario de la Princesa. Servicio de Neurocirugia. Grupo de Epilepsia; España
Fil: Ortega, Guillermo José. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Autonoma de Madrid. Hospital Universitario de la Princesa. Servicio de Neurocirugia. Grupo de Epilepsia; España
description The postictal period is characterized by several neurological alterations, but its exact limits are clinically or even electroencephalographically hard to determine in most cases. We aim to provide quantitative functions or conditions with a clearly distinguishable behavior during the ictal-postictal transition. Spectral methods were used to analyze foramen ovale electrodes (FOE) recordings during the ictal/postictal transition in 31 seizures of 15 patients with strictly unilateral drug resistant temporal lobe epilepsy. In particular, density of links, spectral entropy, and relative spectral power were analyzed. Partial simple seizures are accompanied by an ipsilateral increase in the relative Delta power and a decrease in synchronization in a 66% and 91% of the cases, respectively, after seizures offset. Complex partial seizures showed a decrease in the spectral entropy in 94% of cases, both ipsilateral and contralateral sides (100% and 73%, respectively) mainly due to an increase of relative Delta activity. Seizure offset is defined as the moment at which the “seizure termination mechanisms” actually end, which is quantified in the spectral entropy value. We propose as a definition for the postictal start the time when the ipsilateral SE reaches the first global minimum.
publishDate 2017
dc.date.none.fl_str_mv 2017-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/72859
Sanz García, Ancor; Vega Zelaya, Lorena; Pastor, Jesús; Sola, Rafael G; Ortega, Guillermo José; Towards operational definition of postictal stage Spectral entropy as a marker of seizure ending; Molecular Diversity Preservation International; Entropy; 19; 2; 2-2017; 1-16
1099-4300
CONICET Digital
CONICET
url http://hdl.handle.net/11336/72859
identifier_str_mv Sanz García, Ancor; Vega Zelaya, Lorena; Pastor, Jesús; Sola, Rafael G; Ortega, Guillermo José; Towards operational definition of postictal stage Spectral entropy as a marker of seizure ending; Molecular Diversity Preservation International; Entropy; 19; 2; 2-2017; 1-16
1099-4300
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.3390/e19020081
info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/1099-4300/19/2/81
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Molecular Diversity Preservation International
publisher.none.fl_str_mv Molecular Diversity Preservation International
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846083491984310272
score 13.221938

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