Facial nerve electroneurography: variability in normal subjects

Facial nerve electroneurography: variability in normal subjects

Twenty normal individuals were submitted to facial nerve electroneurography using different techniques in order to determine the most accurate to obtain the latencies and amplitudes of the compound muscle action potentials (CMAP) of the facial muscles. First of all it was determined in which muscle or muscle group highest amplitude CMAP could be recorded with the lowest variability between sides and in test-retest. Different techniques were studied in order to determine which could give the best results. This was shown to be an arrangement of bipolar surface electrodes fixed to a plastic bar. The records with higher amplitude where obtained from the nasolabial fold muscles. Therefore 65 normal volunteers were examined using this technique and recording the potentials obtained over the nasolabial fold muscles. Normal values were determined (latency lower than 4.5 ms and amplitude larger than 2 mV - 95% confidence limits).

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Main Authors: Medeiros,Jovany Luis Alves de, Nobrega,João Antonio Maciel, Andrade,Luiz Augusto Franco de, Juliano,Yara
Format: Digital revista
Language:English
Published: Academia Brasileira de Neurologia - ABNEURO 1996
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X1996000300005
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spelling oai:scielo:S0004-282X19960003000052010-11-10Facial nerve electroneurography: variability in normal subjectsMedeiros,Jovany Luis Alves deNobrega,João Antonio MacielAndrade,Luiz Augusto Franco deJuliano,Yara facial nerve eletroneurography Twenty normal individuals were submitted to facial nerve electroneurography using different techniques in order to determine the most accurate to obtain the latencies and amplitudes of the compound muscle action potentials (CMAP) of the facial muscles. First of all it was determined in which muscle or muscle group highest amplitude CMAP could be recorded with the lowest variability between sides and in test-retest. Different techniques were studied in order to determine which could give the best results. This was shown to be an arrangement of bipolar surface electrodes fixed to a plastic bar. The records with higher amplitude where obtained from the nasolabial fold muscles. Therefore 65 normal volunteers were examined using this technique and recording the potentials obtained over the nasolabial fold muscles. Normal values were determined (latency lower than 4.5 ms and amplitude larger than 2 mV - 95% confidence limits).info:eu-repo/semantics/openAccessAcademia Brasileira de Neurologia - ABNEUROArquivos de Neuro-Psiquiatria v.54 n.3 19961996-09-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X1996000300005en10.1590/S0004-282X1996000300005
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Medeiros,Jovany Luis Alves de
Nobrega,João Antonio Maciel
Andrade,Luiz Augusto Franco de
Juliano,Yara
spellingShingle Medeiros,Jovany Luis Alves de
Nobrega,João Antonio Maciel
Andrade,Luiz Augusto Franco de
Juliano,Yara
Facial nerve electroneurography: variability in normal subjects
author_facet Medeiros,Jovany Luis Alves de
Nobrega,João Antonio Maciel
Andrade,Luiz Augusto Franco de
Juliano,Yara
author_sort Medeiros,Jovany Luis Alves de
title Facial nerve electroneurography: variability in normal subjects
title_short Facial nerve electroneurography: variability in normal subjects
title_full Facial nerve electroneurography: variability in normal subjects
title_fullStr Facial nerve electroneurography: variability in normal subjects
title_full_unstemmed Facial nerve electroneurography: variability in normal subjects
title_sort facial nerve electroneurography: variability in normal subjects
description Twenty normal individuals were submitted to facial nerve electroneurography using different techniques in order to determine the most accurate to obtain the latencies and amplitudes of the compound muscle action potentials (CMAP) of the facial muscles. First of all it was determined in which muscle or muscle group highest amplitude CMAP could be recorded with the lowest variability between sides and in test-retest. Different techniques were studied in order to determine which could give the best results. This was shown to be an arrangement of bipolar surface electrodes fixed to a plastic bar. The records with higher amplitude where obtained from the nasolabial fold muscles. Therefore 65 normal volunteers were examined using this technique and recording the potentials obtained over the nasolabial fold muscles. Normal values were determined (latency lower than 4.5 ms and amplitude larger than 2 mV - 95% confidence limits).
publisher Academia Brasileira de Neurologia - ABNEURO
publishDate 1996
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X1996000300005
work_keys_str_mv AT medeirosjovanyluisalvesde facialnerveelectroneurographyvariabilityinnormalsubjects
AT nobregajoaoantoniomaciel facialnerveelectroneurographyvariabilityinnormalsubjects
AT andradeluizaugustofrancode facialnerveelectroneurographyvariabilityinnormalsubjects
AT julianoyara facialnerveelectroneurographyvariabilityinnormalsubjects
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