Optimization of Interphase Intervals to Enhance the Evoked Muscular Responses of Transcutaneous Neuromuscular Electrical Stimulation

2.50
Hdl Handle:
http://hdl.handle.net/2336/620432
Title:
Optimization of Interphase Intervals to Enhance the Evoked Muscular Responses of Transcutaneous Neuromuscular Electrical Stimulation
Authors:
Vargas Luna, Jose Luis ( 0000-0002-5125-1999 ) ; Krenn, Matthias ( 0000-0002-3398-3627 ) ; Mayr, Winfried; Cortés Ramírez, Jorge Armando
Citation:
Optimization of Interphase Intervals to Enhance the Evoked Muscular Responses of Transcutaneous Neuromuscular Electrical Stimulation 2017, 41 (12):1145 Artificial Organs
Issue Date:
Dec-2017
Abstract:
Neuromuscular electrical stimulation (NMES) is a widely used technique for clinical diagnostic, treatment, and research. Normally, it applies charge-balanced biphasic pulses, which several publications have reported to be less efficient than monophasic pulses. A good alternative is the use of interphase intervals (IPI) on biphasic pulses that allows to achieve similar responses than those evoked by monophasic stimulation. This study analyzes the enhancing mechanism of the IPI and provides guidelines on how to optimize the IPI in order to reduce secondary effects such as the electrode corrosion. The tibial nerve was excited by NMES biphasic pulses with different IPI durations and polarities. Then, the elicited responses were recorded on the soleus muscle via electromyography. When cathodic-first pulses were applied, the responses increased proportionally to the IPI until the duration of 250 mu s, where the increase saturated at 30% of the original amplitude. The responses evoked during anodic-first were 6% to 30% smaller than those evoked during cathodic-first pulses and continuously increased until the IPI duration of 2500 mu s, where the responses reached an increase of around 30%. The results suggest that when a cathodic-first pulse is used, the IPI could be optimized (based on the setup geometry) to allow the action potentials to travel out of the hyperpolarization zone induced by the anodic phase. When anodic-first stimuli are applied, the IPI duration allows the fiber to recover from an apparent insensitive state induced by the anodic phase. The use of IPI is a viable option to improve the efficiency of actual stimulation systems, since only small modifications are required to significantly reduce the electrical charge required and boost the stimulation efficiency.
Description:
To access publisher's full text version of this article click on the hyperlink below
Additional Links:
http://doi.wiley.com/10.1111/aor.12921
Rights:
Archived with thanks to Artificial Organs

Full metadata record

DC FieldValue Language
dc.contributor.authorVargas Luna, Jose Luisen
dc.contributor.authorKrenn, Matthiasen
dc.contributor.authorMayr, Winfrieden
dc.contributor.authorCortés Ramírez, Jorge Armandoen
dc.date.accessioned2018-01-11T18:09:44Z-
dc.date.available2018-01-11T18:09:44Z-
dc.date.issued2017-12-
dc.date.submitted2018-
dc.identifier.citationOptimization of Interphase Intervals to Enhance the Evoked Muscular Responses of Transcutaneous Neuromuscular Electrical Stimulation 2017, 41 (12):1145 Artificial Organsen
dc.identifier.issn0160564X-
dc.identifier.doi10.1111/aor.12921-
dc.identifier.urihttp://hdl.handle.net/2336/620432-
dc.descriptionTo access publisher's full text version of this article click on the hyperlink belowen
dc.description.abstractNeuromuscular electrical stimulation (NMES) is a widely used technique for clinical diagnostic, treatment, and research. Normally, it applies charge-balanced biphasic pulses, which several publications have reported to be less efficient than monophasic pulses. A good alternative is the use of interphase intervals (IPI) on biphasic pulses that allows to achieve similar responses than those evoked by monophasic stimulation. This study analyzes the enhancing mechanism of the IPI and provides guidelines on how to optimize the IPI in order to reduce secondary effects such as the electrode corrosion. The tibial nerve was excited by NMES biphasic pulses with different IPI durations and polarities. Then, the elicited responses were recorded on the soleus muscle via electromyography. When cathodic-first pulses were applied, the responses increased proportionally to the IPI until the duration of 250 mu s, where the increase saturated at 30% of the original amplitude. The responses evoked during anodic-first were 6% to 30% smaller than those evoked during cathodic-first pulses and continuously increased until the IPI duration of 2500 mu s, where the responses reached an increase of around 30%. The results suggest that when a cathodic-first pulse is used, the IPI could be optimized (based on the setup geometry) to allow the action potentials to travel out of the hyperpolarization zone induced by the anodic phase. When anodic-first stimuli are applied, the IPI duration allows the fiber to recover from an apparent insensitive state induced by the anodic phase. The use of IPI is a viable option to improve the efficiency of actual stimulation systems, since only small modifications are required to significantly reduce the electrical charge required and boost the stimulation efficiency.en
dc.description.sponsorshipConsejo Nacional de Ciencia y Tecnologia (CONACYT, Mexico)en
dc.language.isoenen
dc.publisherWileyen
dc.relation.urlhttp://doi.wiley.com/10.1111/aor.12921en
dc.rightsArchived with thanks to Artificial Organsen
dc.subjectTaugaboðen
dc.subjectRafstraumuren
dc.subjectRES12en
dc.subject.meshTranscutaneous Electric Nerve Stimulationen
dc.subject.meshElectric Stimulation Therapyen
dc.titleOptimization of Interphase Intervals to Enhance the Evoked Muscular Responses of Transcutaneous Neuromuscular Electrical Stimulationen
dc.typeArticleen
dc.contributor.department1 ] Tecnol Monterrey, Escuela Ingn & Ciencias, Monterrey, Mexico Show more [ 2 ] Reykjavik Univ, Landspitali Univ Hosp, Hlth Technol Ctr, Reykjavik, Iceland Show more [ 3 ] Med Univ Vienna, Ctr Med Phys & Biomed Engn, Wahringer Gurtel 18-20-4L, A-1090 Vienna, Austria Show more [ 4 ] Vienna Univ Technol, Inst Electrodynam Microwave & Circuit Engn, Vienna, Austria Show more [ 5 ] Lodz Univ Technol, Lodz, Polanden
dc.identifier.journalArtificial Organsen
dc.rights.accessNational Consortium - Landsaðganguren
dc.contributor.institutionTecnológico de Monterrey; Escuela de Ingeniería y Ciencias; Monterrey Mexico-
dc.contributor.institutionCenter for Medical Physics and Biomedical Engineering; Medical University of Vienna-
dc.contributor.institutionCenter for Medical Physics and Biomedical Engineering; Medical University of Vienna-
dc.contributor.institutionTecnológico de Monterrey; Escuela de Ingeniería y Ciencias; Monterrey Mexico-
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