pellegrino 2.2.p65
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 tibial 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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| Acceso en línea: | http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=pveterinaria/invet&cl=CL1&d=HWA_5524 https://repositoriouba.sisbi.uba.ar/gsdl/collect/pveterinaria/invet/index/assoc/HWA_5524.dir/5524.PDF |
| Aporte de: |
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I28-R145-HWA_5524 |
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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 tibial Potenciales evocados somatosensitivos Perros Nerve conduction velocity Tibial nerve Somatosensory evoked potentials Dogs |
| spellingShingle |
Velocidad de conducción nerviosa Nervio tibial Potenciales evocados somatosensitivos Perros Nerve conduction velocity Tibial nerve Somatosensory evoked potentials Dogs Pellegrino, F.C. Sica, R.E.P. pellegrino 2.2.p65 |
| topic_facet |
Velocidad de conducción nerviosa Nervio tibial Potenciales evocados somatosensitivos Perros Nerve conduction velocity Tibial 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 tibial nerve stimulation. Conduction velocity (CV) of tibial 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 L7-S1 and L5-L6, and in the scalp. At the lumbosacral spinal level (L7-S1) 3 succesive potentials were obtained: the first is a triphasic wave; its first deflection being positive (P1-N1-P2) followed by a larger biphasic potential negative-positive (N2-P3) and ending down with another small biphasic wave negative- positive (N3-P4). The mean latency to the main negative peak (N2) was 6.21 ms +/-1.44 ms. The mean value for CV of tibial nerve was 59.03 +/-8.56 m/s. At the L5-L6 spinal level a triphasic wave was obtained, its first deflection being positive followed by a larger negative potential, ending with another small positive deflection. Cranial SSEPs had a "w" shape, their mean latency to the negative peak was 20.46 +/-3.15 ms. The mean value for CCT was 12.06 +/-2.28 ms. In regards to the sources of the L7-S1 potential, they may be attributed to the activity of the neurons located at the ganglia of the dorsal roots, the spinal roots, and the dorsal horn of the spinal cord, while L5-L6 potential may be due to the spatial summation activity of the different structures 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 |
pellegrino 2.2.p65 |
| title_short |
pellegrino 2.2.p65 |
| title_full |
pellegrino 2.2.p65 |
| title_fullStr |
pellegrino 2.2.p65 |
| title_full_unstemmed |
pellegrino 2.2.p65 |
| title_sort |
pellegrino 2.2.p65 |
| 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_5524 https://repositoriouba.sisbi.uba.ar/gsdl/collect/pveterinaria/invet/index/assoc/HWA_5524.dir/5524.PDF |
| work_keys_str_mv |
AT pellegrinofc pellegrino22p65 AT sicarep pellegrino22p65 AT pellegrinofc potencialesevocadossomatosensitivosobtenidosporestimulaciondelnerviotibialregistrosespinalycraneanoencaninos AT sicarep potencialesevocadossomatosensitivosobtenidosporestimulaciondelnerviotibialregistrosespinalycraneanoencaninos AT pellegrinofc somatosensoryevokedpotentialsobtainedbystimulatingthetibialnervespinalcordandcranialrecordingsindogs AT sicarep somatosensoryevokedpotentialsobtainedbystimulatingthetibialnervespinalcordandcranialrecordingsindogs |
| _version_ |
1824359811140026368 |
| spelling |
I28-R145-HWA_55242024-11-05 pellegrino 2.2.p65 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 tibial nerve stimulation. Conduction velocity (CV) of tibial 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 L7-S1 and L5-L6, and in the scalp. At the lumbosacral spinal level (L7-S1) 3 succesive potentials were obtained: the first is a triphasic wave; its first deflection being positive (P1-N1-P2) followed by a larger biphasic potential negative-positive (N2-P3) and ending down with another small biphasic wave negative- positive (N3-P4). The mean latency to the main negative peak (N2) was 6.21 ms +/-1.44 ms. The mean value for CV of tibial nerve was 59.03 +/-8.56 m/s. At the L5-L6 spinal level a triphasic wave was obtained, its first deflection being positive followed by a larger negative potential, ending with another small positive deflection. Cranial SSEPs had a "w" shape, their mean latency to the negative peak was 20.46 +/-3.15 ms. The mean value for CCT was 12.06 +/-2.28 ms. In regards to the sources of the L7-S1 potential, they may be attributed to the activity of the neurons located at the ganglia of the dorsal roots, the spinal roots, and the dorsal horn of the spinal cord, while L5-L6 potential may be due to the spatial summation activity of the different structures 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 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 tibial en 22 perros sanos cuya edad promedio fue de 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 registrada. 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 L7-S1 y L5-L6, y en la piel del cráneo. El potencial espinal en L7-S1 muestra 3 potenciales sucesivos, el primero trifásico con la primera deflexión positiva (P1-N1-P2), seguido de un gran potencial negativo/positivo (N2-P3) finalizando con uno pequeño negativo/positivo (N3-P4). La latencia media al pico negativo N2 fue 6.21+/-1.44ms. La media para la VC fue 59.03+/-8.56m/s. En L5-L6 el potencial es positivo/ negativo/positivo. El potencial craneano tuvo forma de "w". La latencia media al pico negativo fue de 20.46+/-3.15ms. El TCC medio fue 12.06+/-2.28ms. Los potenciales sucesivos en L7-S1 probablemente surjan de la actividad a nivel del ganglio espinal, la raíz dorsal y el cuerno medular, mientras que en L5- L6 sea debido a la sumación espacial de la actividad de distintas estructuras ubicadas en el sitio de registro. La actividad a nivel craneano podría deberse a la acción de las conexiones tálamo-corticales y de la corteza somatosensitiva. application/pdf 1514-6634 (impreso) 1668-3498 (en línea) Velocidad de conducción nerviosa Nervio tibial Potenciales evocados somatosensitivos Perros Nerve conduction velocity Tibial 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 obtenidos por estimulación del nervio Tibial (registros espinal y craneano) en caninos Somatosensory Evoked Potentials Obtained by Stimulating the Tibial 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_5524 https://repositoriouba.sisbi.uba.ar/gsdl/collect/pveterinaria/invet/index/assoc/HWA_5524.dir/5524.PDF |