Evaluation of the criteria to identify single-fibre potentials in human muscle fibres

Thecriterionnormallyusedtoidentifyapotential generated byasinglemusclefibre(SFAP)isthatitmusthave identical shape at consecutive discharges. Technical problemsaccompanyingtherecordingofsingle-fibreelectromyographic (SFEMG) potentials introduce certain variability in the shape of these potentials, th...

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Autores: Rodríguez Falces, Javier, Gila Useros, Luis, Dimitrova, Nonna Alexandrovna
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2012
País:España
Institución:Universidad Pública de Navarra
Repositorio:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
OAI Identifier:oai:academica-e.unavarra.es:2454/55575
Acceso en línea:https://hdl.handle.net/2454/55575
Access Level:acceso abierto
Palabra clave:Single-fibre EMG
Single-fibre criteria
Shape variability
Rise-time variability
Jitter distortion
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spelling Evaluation of the criteria to identify single-fibre potentials in human muscle fibresRodríguez Falces, JavierGila Useros, LuisDimitrova, Nonna AlexandrovnaSingle-fibre EMGSingle-fibre criteriaShape variabilityRise-time variabilityJitter distortionThecriterionnormallyusedtoidentifyapotential generated byasinglemusclefibre(SFAP)isthatitmusthave identical shape at consecutive discharges. Technical problemsaccompanyingtherecordingofsingle-fibreelectromyographic (SFEMG) potentials introduce certain variability in the shape of these potentials, thereby compromising the ability to detect pure SFAPs. This study aims to determine the conditions necessary for two fibres to generate a compound potential that fulfils the single-fibre criterion. This has been done by analysing the alterations in the waveform of compoundspikes formed bythesummationoftwoSFAPswhose relative weight in the composite potential can differ considerably. Several factors responsible for this shape variability, with a geometrical, physiological or accidental origin, have been included in our study. It has been shown that a distant interfering component will be hardly detected in the composite potential if it is smaller than approximately 15% of the main component. For this interfering component to generate a notch in the rising phase of the compound potential, it must be greater than about 30% of the main component. Acompound potential will fulfil the single-fibre criterion if the time dispersion between the individual components is less than 80–120µs. These results permit the estimation of the amplitude of interfering potentials so they could be useful in fibre density studies. The article also emphasises the inherent variability of SFEMG potentials and the impact of this variability on jitter estimation.SpringerIngeniería Eléctrica y ElectrónicaIngeniaritza Elektrikoa eta Elektronikoa2012info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2454/55575reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarrainstname:Universidad Pública de NavarraInglés© Springer-Verlag 2012info:eu-repo/semantics/openAccessoai:academica-e.unavarra.es:2454/555752026-06-17T12:41:47Z
dc.title.none.fl_str_mv Evaluation of the criteria to identify single-fibre potentials in human muscle fibres
title Evaluation of the criteria to identify single-fibre potentials in human muscle fibres
spellingShingle Evaluation of the criteria to identify single-fibre potentials in human muscle fibres
Rodríguez Falces, Javier
Single-fibre EMG
Single-fibre criteria
Shape variability
Rise-time variability
Jitter distortion
title_short Evaluation of the criteria to identify single-fibre potentials in human muscle fibres
title_full Evaluation of the criteria to identify single-fibre potentials in human muscle fibres
title_fullStr Evaluation of the criteria to identify single-fibre potentials in human muscle fibres
title_full_unstemmed Evaluation of the criteria to identify single-fibre potentials in human muscle fibres
title_sort Evaluation of the criteria to identify single-fibre potentials in human muscle fibres
dc.creator.none.fl_str_mv Rodríguez Falces, Javier
Gila Useros, Luis
Dimitrova, Nonna Alexandrovna
author Rodríguez Falces, Javier
author_facet Rodríguez Falces, Javier
Gila Useros, Luis
Dimitrova, Nonna Alexandrovna
author_role author
author2 Gila Useros, Luis
Dimitrova, Nonna Alexandrovna
author2_role author
author
dc.contributor.none.fl_str_mv Ingeniería Eléctrica y Electrónica
Ingeniaritza Elektrikoa eta Elektronikoa
dc.subject.none.fl_str_mv Single-fibre EMG
Single-fibre criteria
Shape variability
Rise-time variability
Jitter distortion
topic Single-fibre EMG
Single-fibre criteria
Shape variability
Rise-time variability
Jitter distortion
description Thecriterionnormallyusedtoidentifyapotential generated byasinglemusclefibre(SFAP)isthatitmusthave identical shape at consecutive discharges. Technical problemsaccompanyingtherecordingofsingle-fibreelectromyographic (SFEMG) potentials introduce certain variability in the shape of these potentials, thereby compromising the ability to detect pure SFAPs. This study aims to determine the conditions necessary for two fibres to generate a compound potential that fulfils the single-fibre criterion. This has been done by analysing the alterations in the waveform of compoundspikes formed bythesummationoftwoSFAPswhose relative weight in the composite potential can differ considerably. Several factors responsible for this shape variability, with a geometrical, physiological or accidental origin, have been included in our study. It has been shown that a distant interfering component will be hardly detected in the composite potential if it is smaller than approximately 15% of the main component. For this interfering component to generate a notch in the rising phase of the compound potential, it must be greater than about 30% of the main component. Acompound potential will fulfil the single-fibre criterion if the time dispersion between the individual components is less than 80–120µs. These results permit the estimation of the amplitude of interfering potentials so they could be useful in fibre density studies. The article also emphasises the inherent variability of SFEMG potentials and the impact of this variability on jitter estimation.
publishDate 2012
dc.date.none.fl_str_mv 2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2454/55575
url https://hdl.handle.net/2454/55575
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv © Springer-Verlag 2012
info:eu-repo/semantics/openAccess
rights_invalid_str_mv © Springer-Verlag 2012
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
instname:Universidad Pública de Navarra
instname_str Universidad Pública de Navarra
reponame_str Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
collection Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
repository.name.fl_str_mv
repository.mail.fl_str_mv
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