Shape variability of potentials recorded by a single-fiber electrode and its effect on jitter estimation

Technical problems accompanying the recording of fiber pair potentials introduce certain instability in the peak-to-peak interval (rise-time, RT) of these potentials. This study aims (1) to measure the variability observed in RT of a large number of sets of consecutive potentials recorded by a singl...

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Autores: Rodríguez Falces, Javier, Dimitrova, Nonna Alexandrovna, Dimitrov, George Vladimirov, Gila Useros, Luis
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2010
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:2454/55570
Acceso en línea:https://hdl.handle.net/2454/55570
Access Level:acceso abierto
Palabra clave:Single-fiber EMG
Shape instability
Peak-to-peak interval
Rise-time variability
Jitter distortion
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spelling Shape variability of potentials recorded by a single-fiber electrode and its effect on jitter estimationRodríguez Falces, JavierDimitrova, Nonna AlexandrovnaDimitrov, George VladimirovGila Useros, LuisSingle-fiber EMGShape instabilityPeak-to-peak intervalRise-time variabilityJitter distortionTechnical problems accompanying the recording of fiber pair potentials introduce certain instability in the peak-to-peak interval (rise-time, RT) of these potentials. This study aims (1) to measure the variability observed in RT of a large number of sets of consecutive potentials recorded by a single-fiber (SF) electrode and (2) to evaluate the effect of such variability on the jitter estimation. Using a SF electrode, 140 sets of consecutive potentials were recorded from the m. tibialis anterior of four healthy subjects. For each set, the rise-time variability (RTV) was calculated as the standard deviation of the RTs of the discharges within that set. The effect of RTV in the estimation of jitter from simulated fiber pairs with controlled values of neuromuscular jitter was analyzed. The RTVs of sets visually assessed as produced by a ‘‘single-fiber’’ were always less than 20 ls, whereas those of ‘‘composite’’ sets were normally higher than 20 ls. We found that the RTV always increased the estimated jitter of fiber pairs. Such increment depended on the amount of neuromuscular jitter. The RTV provides an estimate of the possible error introduced in jitter assessment. This could be important for the diagnosis of mild clinical manifestations of myasthenia gravis, myopathies, and Duchenne dystrophies.This work was supported by the Spanish Ministry of Education and Science under the project SAF2007-65383.SpringerIngeniería Eléctrica y ElectrónicaIngeniaritza Elektriko eta Elektronikoa Saila2010info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2454/55570reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarrainstname:Universidad Pública de NavarraInglésinfo:eu-repo/grantAgreement/MEC//SAF2007-65383© 2010 Biomedical Engineering Society.info:eu-repo/semantics/openAccessoai:academica-e.unavarra.es:2454/555702026-06-17T12:41:47Z
dc.title.none.fl_str_mv Shape variability of potentials recorded by a single-fiber electrode and its effect on jitter estimation
title Shape variability of potentials recorded by a single-fiber electrode and its effect on jitter estimation
spellingShingle Shape variability of potentials recorded by a single-fiber electrode and its effect on jitter estimation
Rodríguez Falces, Javier
Single-fiber EMG
Shape instability
Peak-to-peak interval
Rise-time variability
Jitter distortion
title_short Shape variability of potentials recorded by a single-fiber electrode and its effect on jitter estimation
title_full Shape variability of potentials recorded by a single-fiber electrode and its effect on jitter estimation
title_fullStr Shape variability of potentials recorded by a single-fiber electrode and its effect on jitter estimation
title_full_unstemmed Shape variability of potentials recorded by a single-fiber electrode and its effect on jitter estimation
title_sort Shape variability of potentials recorded by a single-fiber electrode and its effect on jitter estimation
dc.creator.none.fl_str_mv Rodríguez Falces, Javier
Dimitrova, Nonna Alexandrovna
Dimitrov, George Vladimirov
Gila Useros, Luis
author Rodríguez Falces, Javier
author_facet Rodríguez Falces, Javier
Dimitrova, Nonna Alexandrovna
Dimitrov, George Vladimirov
Gila Useros, Luis
author_role author
author2 Dimitrova, Nonna Alexandrovna
Dimitrov, George Vladimirov
Gila Useros, Luis
author2_role author
author
author
dc.contributor.none.fl_str_mv Ingeniería Eléctrica y Electrónica
Ingeniaritza Elektriko eta Elektronikoa Saila
dc.subject.none.fl_str_mv Single-fiber EMG
Shape instability
Peak-to-peak interval
Rise-time variability
Jitter distortion
topic Single-fiber EMG
Shape instability
Peak-to-peak interval
Rise-time variability
Jitter distortion
description Technical problems accompanying the recording of fiber pair potentials introduce certain instability in the peak-to-peak interval (rise-time, RT) of these potentials. This study aims (1) to measure the variability observed in RT of a large number of sets of consecutive potentials recorded by a single-fiber (SF) electrode and (2) to evaluate the effect of such variability on the jitter estimation. Using a SF electrode, 140 sets of consecutive potentials were recorded from the m. tibialis anterior of four healthy subjects. For each set, the rise-time variability (RTV) was calculated as the standard deviation of the RTs of the discharges within that set. The effect of RTV in the estimation of jitter from simulated fiber pairs with controlled values of neuromuscular jitter was analyzed. The RTVs of sets visually assessed as produced by a ‘‘single-fiber’’ were always less than 20 ls, whereas those of ‘‘composite’’ sets were normally higher than 20 ls. We found that the RTV always increased the estimated jitter of fiber pairs. Such increment depended on the amount of neuromuscular jitter. The RTV provides an estimate of the possible error introduced in jitter assessment. This could be important for the diagnosis of mild clinical manifestations of myasthenia gravis, myopathies, and Duchenne dystrophies.
publishDate 2010
dc.date.none.fl_str_mv 2010
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/2454/55570
url https://hdl.handle.net/2454/55570
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MEC//SAF2007-65383
dc.rights.none.fl_str_mv © 2010 Biomedical Engineering Society.
info:eu-repo/semantics/openAccess
rights_invalid_str_mv © 2010 Biomedical Engineering Society.
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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