Potenciales Evocados Somatosensitivos (PESS) obtenidos por estimulación del nervio Mediano (registros espinal y craneano) en caninos

Autores
Pellegrino, F.C.; Sica, R.E.P.
Año de publicación
2005
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We investigated SSEPs in 22 normal dogs of both sexes (12 females), aged between 3 and 14 years (mean: 7 +/- 4 years old) by recording the electrical signal at the spinal cord (L7-S1 and L5-L6) and at the scalp (frontoparietal region) in response to median nerve stimulation. Conduction velocity (CV) of median nerve and its roots was calculated, measuring the distance between the stimulating cathode and the recording electrode, and dividing it into the latency of the of the spinal cord arrival corresponding negative peak. Central conduction time (CCT) was estimated subtracting the latencies of the spinal potencial from the cranial potential. We employed needle electrodes sited between C7-T1 and in the scalp, at the contralateral region respect to the stimulus. At the spinal level a triphasic wave was obtained, its first deflection being positive followed by a larger negative potential and ending up with another small positive deflection. The mean latency to the main negative peak was 4.95 ms +/-0.92 ms. The mean value of CV was 60.79 +/-13.53 m/s. Cranial SSEPs had a ?w? shape, their mean latency to the negative peak was 14.62 +/-1.83 ms. The mean value of CCT was 9.67 +/-2.02 ms. In 6 out of the 22 studied dogs, once the regular recording was obtained, the stimulating electrodes were moved distally and a new recording was acquired; this procedure allowed to measure the median nerve conduction velocity between the 1st and the 2nd sites of stimulation, in a restricted segment of the nerve trunk; following this procedure the mean value obtained was 59.83 +/-21.44 m/s, which did not significantly differ from the former calculation. In regards to the sources of these potentials, most probably the spinal one constitute the spatial sum of the electrical activity of the different structures sited in the recording site. The cranial response is brought about by the activation of the thalamo-cortical circuits and the neurons of the parietal cortex situated at the receiving area.
Fil: Pellegrino, F.C. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias. Departamento Fisiología y Ciencias Básicas. Buenos Aires, Argentina
Fil: Sica, R.E.P. Universidad de Buenos Aires. Facultad de Medicina. Cátedra de Neurología. Buenos Aires, Argentina
Se investigaron los PESS espinal y craneano y su génesis por estimulación del nervio mediano en 22 perros sanos cuya edad promedio fue 7 años. La velocidad de conducción (VC) del nervio surgió del cociente entre la distancia desde el estímulo al registro espinal y la latencia del pico negativo de la onda obtenida. Se obtuvo el tiempo de conducción central (TCC) midiendo la diferencia entre las latencias de los potenciales craneano y espinal. Se emplearon electrodos de aguja entre C7-T1 y en la piel del cráneo contralateralmente al estímulo. El potencial espinal mostró una primera deflexión positiva, seguida por una negativa finalizando con una positiva.La latencia media al pico negativo fue de 4.95+/-0.92ms. La media para la VC del nervio fue 60.79+/-13.53m/s. El potencial craneano tuvo forma de ?w?. La latencia media al pico negativo fue de 14.62+/-1.83ms. El TCC medio fue de 9.67+/-2.02ms. En 6 perros la estimulación se hizo también más distalmente, permitiendo medir la VC segmentaria del nervio; la media obtenida fue de 59.83+/-21.44m/s, que no difirió significativamente de la primera. El potencial espinal probablemente surja de la sumación espacial de la actividad de diferentes estructuras ubicadas en el lugar del registro, mientras que el obtenido en el cráneo sea debido a la acción de las conexiones tálamo-corticales y de la corteza de recepción.
Fuente
InVet, vol. 07, nº1
Materia
velocidad de conducción nerviosa
nervio mediano
potenciales evocados somatosensitivos
perros
nerve conduction velocity
median nerve
somatosensory evoked potentials
dogs
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
Repositorio Digital Institucional de la Universidad de Buenos Aires
Institución
Universidad de Buenos Aires
OAI Identificador
oai:RDI UBA:pveterinaria/invet:HWA_4602

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repository_id_str
network_name_str Repositorio Digital Institucional de la Universidad de Buenos Aires
spelling Potenciales Evocados Somatosensitivos (PESS) obtenidos por estimulación del nervio Mediano (registros espinal y craneano) en caninosSomatosensory Evoked Potentials Obtained by Stimulating the Median Nerve (Spinal Cord and Cranial Recordings) in DogsPellegrino, F.C.Sica, R.E.P.velocidad de conducción nerviosanervio medianopotenciales evocados somatosensitivosperrosnerve conduction velocitymedian nervesomatosensory evoked potentialsdogsWe investigated SSEPs in 22 normal dogs of both sexes (12 females), aged between 3 and 14 years (mean: 7 +/- 4 years old) by recording the electrical signal at the spinal cord (L7-S1 and L5-L6) and at the scalp (frontoparietal region) in response to median nerve stimulation. Conduction velocity (CV) of median nerve and its roots was calculated, measuring the distance between the stimulating cathode and the recording electrode, and dividing it into the latency of the of the spinal cord arrival corresponding negative peak. Central conduction time (CCT) was estimated subtracting the latencies of the spinal potencial from the cranial potential. We employed needle electrodes sited between C7-T1 and in the scalp, at the contralateral region respect to the stimulus. At the spinal level a triphasic wave was obtained, its first deflection being positive followed by a larger negative potential and ending up with another small positive deflection. The mean latency to the main negative peak was 4.95 ms +/-0.92 ms. The mean value of CV was 60.79 +/-13.53 m/s. Cranial SSEPs had a ?w? shape, their mean latency to the negative peak was 14.62 +/-1.83 ms. The mean value of CCT was 9.67 +/-2.02 ms. In 6 out of the 22 studied dogs, once the regular recording was obtained, the stimulating electrodes were moved distally and a new recording was acquired; this procedure allowed to measure the median nerve conduction velocity between the 1st and the 2nd sites of stimulation, in a restricted segment of the nerve trunk; following this procedure the mean value obtained was 59.83 +/-21.44 m/s, which did not significantly differ from the former calculation. In regards to the sources of these potentials, most probably the spinal one constitute the spatial sum of the electrical activity of the different structures sited in the recording site. The cranial response is brought about by the activation of the thalamo-cortical circuits and the neurons of the parietal cortex situated at the receiving area.Fil: Pellegrino, F.C. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias. Departamento Fisiología y Ciencias Básicas. Buenos Aires, ArgentinaFil: Sica, R.E.P. Universidad de Buenos Aires. Facultad de Medicina. Cátedra de Neurología. Buenos Aires, ArgentinaSe investigaron los PESS espinal y craneano y su génesis por estimulación del nervio mediano en 22 perros sanos cuya edad promedio fue 7 años. La velocidad de conducción (VC) del nervio surgió del cociente entre la distancia desde el estímulo al registro espinal y la latencia del pico negativo de la onda obtenida. Se obtuvo el tiempo de conducción central (TCC) midiendo la diferencia entre las latencias de los potenciales craneano y espinal. Se emplearon electrodos de aguja entre C7-T1 y en la piel del cráneo contralateralmente al estímulo. El potencial espinal mostró una primera deflexión positiva, seguida por una negativa finalizando con una positiva.La latencia media al pico negativo fue de 4.95+/-0.92ms. La media para la VC del nervio fue 60.79+/-13.53m/s. El potencial craneano tuvo forma de ?w?. La latencia media al pico negativo fue de 14.62+/-1.83ms. El TCC medio fue de 9.67+/-2.02ms. En 6 perros la estimulación se hizo también más distalmente, permitiendo medir la VC segmentaria del nervio; la media obtenida fue de 59.83+/-21.44m/s, que no difirió significativamente de la primera. El potencial espinal probablemente surja de la sumación espacial de la actividad de diferentes estructuras ubicadas en el lugar del registro, mientras que el obtenido en el cráneo sea debido a la acción de las conexiones tálamo-corticales y de la corteza de recepción.Universidad de Buenos Aires. Facultad de Ciencias Veterinarias.2005info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1514-6634 (impreso)1668-3498 (en línea)http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=pveterinaria/invet&cl=CL1&d=HWA_4602https://repositoriouba.sisbi.uba.ar/gsdl/collect/pveterinaria/invet/index/assoc/HWA_4602.dir/4602.PDFInVet, vol. 07, nº1reponame:Repositorio Digital Institucional de la Universidad de Buenos Airesinstname:Universidad de Buenos Airesspainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/2025-09-04T11:46:21Zoai:RDI UBA:pveterinaria/invet:HWA_4602instacron:UBAInstitucionalhttp://repositoriouba.sisbi.uba.ar/Universidad públicahttps://www.uba.ar/http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/oaiserver.cgicferrando@sisbi.uba.arArgentinaopendoar:2025-09-04 11:46:22.205Repositorio Digital Institucional de la Universidad de Buenos Aires - Universidad de Buenos Airesfalse
dc.title.none.fl_str_mv Potenciales Evocados Somatosensitivos (PESS) obtenidos por estimulación del nervio Mediano (registros espinal y craneano) en caninos
Somatosensory Evoked Potentials Obtained by Stimulating the Median Nerve (Spinal Cord and Cranial Recordings) in Dogs
title Potenciales Evocados Somatosensitivos (PESS) obtenidos por estimulación del nervio Mediano (registros espinal y craneano) en caninos
spellingShingle Potenciales Evocados Somatosensitivos (PESS) obtenidos por estimulación del nervio Mediano (registros espinal y craneano) en caninos
Pellegrino, F.C.
velocidad de conducción nerviosa
nervio mediano
potenciales evocados somatosensitivos
perros
nerve conduction velocity
median nerve
somatosensory evoked potentials
dogs
title_short Potenciales Evocados Somatosensitivos (PESS) obtenidos por estimulación del nervio Mediano (registros espinal y craneano) en caninos
title_full Potenciales Evocados Somatosensitivos (PESS) obtenidos por estimulación del nervio Mediano (registros espinal y craneano) en caninos
title_fullStr Potenciales Evocados Somatosensitivos (PESS) obtenidos por estimulación del nervio Mediano (registros espinal y craneano) en caninos
title_full_unstemmed Potenciales Evocados Somatosensitivos (PESS) obtenidos por estimulación del nervio Mediano (registros espinal y craneano) en caninos
title_sort Potenciales Evocados Somatosensitivos (PESS) obtenidos por estimulación del nervio Mediano (registros espinal y craneano) en caninos
dc.creator.none.fl_str_mv Pellegrino, F.C.
Sica, R.E.P.
author Pellegrino, F.C.
author_facet Pellegrino, F.C.
Sica, R.E.P.
author_role author
author2 Sica, R.E.P.
author2_role author
dc.subject.none.fl_str_mv velocidad de conducción nerviosa
nervio mediano
potenciales evocados somatosensitivos
perros
nerve conduction velocity
median nerve
somatosensory evoked potentials
dogs
topic velocidad de conducción nerviosa
nervio mediano
potenciales evocados somatosensitivos
perros
nerve conduction velocity
median nerve
somatosensory evoked potentials
dogs
dc.description.none.fl_txt_mv We investigated SSEPs in 22 normal dogs of both sexes (12 females), aged between 3 and 14 years (mean: 7 +/- 4 years old) by recording the electrical signal at the spinal cord (L7-S1 and L5-L6) and at the scalp (frontoparietal region) in response to median nerve stimulation. Conduction velocity (CV) of median nerve and its roots was calculated, measuring the distance between the stimulating cathode and the recording electrode, and dividing it into the latency of the of the spinal cord arrival corresponding negative peak. Central conduction time (CCT) was estimated subtracting the latencies of the spinal potencial from the cranial potential. We employed needle electrodes sited between C7-T1 and in the scalp, at the contralateral region respect to the stimulus. At the spinal level a triphasic wave was obtained, its first deflection being positive followed by a larger negative potential and ending up with another small positive deflection. The mean latency to the main negative peak was 4.95 ms +/-0.92 ms. The mean value of CV was 60.79 +/-13.53 m/s. Cranial SSEPs had a ?w? shape, their mean latency to the negative peak was 14.62 +/-1.83 ms. The mean value of CCT was 9.67 +/-2.02 ms. In 6 out of the 22 studied dogs, once the regular recording was obtained, the stimulating electrodes were moved distally and a new recording was acquired; this procedure allowed to measure the median nerve conduction velocity between the 1st and the 2nd sites of stimulation, in a restricted segment of the nerve trunk; following this procedure the mean value obtained was 59.83 +/-21.44 m/s, which did not significantly differ from the former calculation. In regards to the sources of these potentials, most probably the spinal one constitute the spatial sum of the electrical activity of the different structures sited in the recording site. The cranial response is brought about by the activation of the thalamo-cortical circuits and the neurons of the parietal cortex situated at the receiving area.
Fil: Pellegrino, F.C. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias. Departamento Fisiología y Ciencias Básicas. Buenos Aires, Argentina
Fil: Sica, R.E.P. Universidad de Buenos Aires. Facultad de Medicina. Cátedra de Neurología. Buenos Aires, Argentina
Se investigaron los PESS espinal y craneano y su génesis por estimulación del nervio mediano en 22 perros sanos cuya edad promedio fue 7 años. La velocidad de conducción (VC) del nervio surgió del cociente entre la distancia desde el estímulo al registro espinal y la latencia del pico negativo de la onda obtenida. Se obtuvo el tiempo de conducción central (TCC) midiendo la diferencia entre las latencias de los potenciales craneano y espinal. Se emplearon electrodos de aguja entre C7-T1 y en la piel del cráneo contralateralmente al estímulo. El potencial espinal mostró una primera deflexión positiva, seguida por una negativa finalizando con una positiva.La latencia media al pico negativo fue de 4.95+/-0.92ms. La media para la VC del nervio fue 60.79+/-13.53m/s. El potencial craneano tuvo forma de ?w?. La latencia media al pico negativo fue de 14.62+/-1.83ms. El TCC medio fue de 9.67+/-2.02ms. En 6 perros la estimulación se hizo también más distalmente, permitiendo medir la VC segmentaria del nervio; la media obtenida fue de 59.83+/-21.44m/s, que no difirió significativamente de la primera. El potencial espinal probablemente surja de la sumación espacial de la actividad de diferentes estructuras ubicadas en el lugar del registro, mientras que el obtenido en el cráneo sea debido a la acción de las conexiones tálamo-corticales y de la corteza de recepción.
description We investigated SSEPs in 22 normal dogs of both sexes (12 females), aged between 3 and 14 years (mean: 7 +/- 4 years old) by recording the electrical signal at the spinal cord (L7-S1 and L5-L6) and at the scalp (frontoparietal region) in response to median nerve stimulation. Conduction velocity (CV) of median nerve and its roots was calculated, measuring the distance between the stimulating cathode and the recording electrode, and dividing it into the latency of the of the spinal cord arrival corresponding negative peak. Central conduction time (CCT) was estimated subtracting the latencies of the spinal potencial from the cranial potential. We employed needle electrodes sited between C7-T1 and in the scalp, at the contralateral region respect to the stimulus. At the spinal level a triphasic wave was obtained, its first deflection being positive followed by a larger negative potential and ending up with another small positive deflection. The mean latency to the main negative peak was 4.95 ms +/-0.92 ms. The mean value of CV was 60.79 +/-13.53 m/s. Cranial SSEPs had a ?w? shape, their mean latency to the negative peak was 14.62 +/-1.83 ms. The mean value of CCT was 9.67 +/-2.02 ms. In 6 out of the 22 studied dogs, once the regular recording was obtained, the stimulating electrodes were moved distally and a new recording was acquired; this procedure allowed to measure the median nerve conduction velocity between the 1st and the 2nd sites of stimulation, in a restricted segment of the nerve trunk; following this procedure the mean value obtained was 59.83 +/-21.44 m/s, which did not significantly differ from the former calculation. In regards to the sources of these potentials, most probably the spinal one constitute the spatial sum of the electrical activity of the different structures sited in the recording site. The cranial response is brought about by the activation of the thalamo-cortical circuits and the neurons of the parietal cortex situated at the receiving area.
publishDate 2005
dc.date.none.fl_str_mv 2005
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 1514-6634 (impreso)
1668-3498 (en línea)
http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=pveterinaria/invet&cl=CL1&d=HWA_4602
https://repositoriouba.sisbi.uba.ar/gsdl/collect/pveterinaria/invet/index/assoc/HWA_4602.dir/4602.PDF
identifier_str_mv 1514-6634 (impreso)
1668-3498 (en línea)
url http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=pveterinaria/invet&cl=CL1&d=HWA_4602
https://repositoriouba.sisbi.uba.ar/gsdl/collect/pveterinaria/invet/index/assoc/HWA_4602.dir/4602.PDF
dc.language.none.fl_str_mv spa
language spa
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidad de Buenos Aires. Facultad de Ciencias Veterinarias.
publisher.none.fl_str_mv Universidad de Buenos Aires. Facultad de Ciencias Veterinarias.
dc.source.none.fl_str_mv InVet, vol. 07, nº1
reponame:Repositorio Digital Institucional de la Universidad de Buenos Aires
instname:Universidad de Buenos Aires
reponame_str Repositorio Digital Institucional de la Universidad de Buenos Aires
collection Repositorio Digital Institucional de la Universidad de Buenos Aires
instname_str Universidad de Buenos Aires
repository.name.fl_str_mv Repositorio Digital Institucional de la Universidad de Buenos Aires - Universidad de Buenos Aires
repository.mail.fl_str_mv cferrando@sisbi.uba.ar
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