Potenciales Evocados Somatosensitivos (PESS) obtenidos por estimulación del nervio Mediano (registros espinal y craneano) en caninos
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)...
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| Autores principales: | , |
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| Formato: | Artículo publishedVersion |
| Lenguaje: | Español |
| Publicado: |
Universidad de Buenos Aires. Facultad de Ciencias Veterinarias.
2005
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| Materias: | |
| Acceso en línea: | http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=pveterinaria/invet&cl=CL1&d=HWA_4602 http://repositoriouba.sisbi.uba.ar/gsdl/collect/pveterinaria/invet/index/assoc/HWA_4602.dir/4602.PDF |
| Aporte de: |
| id |
I28-R145-HWA_4602 |
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| record_format |
dspace |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-145 |
| collection |
Repositorio Digital de la Universidad de Buenos Aires (UBA) |
| language |
Español |
| orig_language_str_mv |
spa |
| topic |
velocidad de conducción nerviosa nervio mediano potenciales evocados somatosensitivos perros nerve conduction velocity median nerve somatosensory evoked potentials dogs |
| spellingShingle |
velocidad de conducción nerviosa nervio mediano potenciales evocados somatosensitivos perros nerve conduction velocity median nerve somatosensory evoked potentials dogs Pellegrino, F.C. Sica, R.E.P. Potenciales Evocados Somatosensitivos (PESS) obtenidos por estimulación del nervio Mediano (registros espinal y craneano) en caninos |
| topic_facet |
velocidad de conducción nerviosa nervio mediano potenciales evocados somatosensitivos perros nerve conduction velocity median nerve somatosensory evoked potentials dogs |
| 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. |
| format |
Artículo Artículo publishedVersion |
| author |
Pellegrino, F.C. Sica, R.E.P. |
| author_facet |
Pellegrino, F.C. Sica, R.E.P. |
| author_sort |
Pellegrino, F.C. |
| title |
Potenciales Evocados Somatosensitivos (PESS) obtenidos por estimulación del nervio Mediano (registros espinal y craneano) en caninos |
| 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 |
| publisher |
Universidad de Buenos Aires. Facultad de Ciencias Veterinarias. |
| publishDate |
2005 |
| url |
http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=pveterinaria/invet&cl=CL1&d=HWA_4602 http://repositoriouba.sisbi.uba.ar/gsdl/collect/pveterinaria/invet/index/assoc/HWA_4602.dir/4602.PDF |
| work_keys_str_mv |
AT pellegrinofc potencialesevocadossomatosensitivospessobtenidosporestimulaciondelnerviomedianoregistrosespinalycraneanoencaninos AT sicarep potencialesevocadossomatosensitivospessobtenidosporestimulaciondelnerviomedianoregistrosespinalycraneanoencaninos AT pellegrinofc somatosensoryevokedpotentialsobtainedbystimulatingthemediannervespinalcordandcranialrecordingsindogs AT sicarep somatosensoryevokedpotentialsobtainedbystimulatingthemediannervespinalcordandcranialrecordingsindogs |
| _version_ |
1766022757535973376 |
| spelling |
I28-R145-HWA_46022021-07-01 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 Pellegrino, F.C. Sica, R.E.P. 2005 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. application/pdf 1514-6634 (impreso) 1668-3498 (en línea) velocidad de conducción nerviosa nervio mediano potenciales evocados somatosensitivos perros nerve conduction velocity median nerve somatosensory evoked potentials dogs spa Universidad de Buenos Aires. Facultad de Ciencias Veterinarias. info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ InVet, vol. 07, nº1 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 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=pveterinaria/invet&cl=CL1&d=HWA_4602 http://repositoriouba.sisbi.uba.ar/gsdl/collect/pveterinaria/invet/index/assoc/HWA_4602.dir/4602.PDF |