Synthesis of optimal electrical stimulation patterns for functional motion restoration: applied to spinal cord-injured patients.
We investigated the synthesis of electrical stimulation patterns for functional movement restoration in human paralyzed limbs. We considered the knee joint system, co-activated by the stimulated quadriceps and hamstring muscles. This synthesis is based on optimized functional electrical stimulation...
| Publicado en: | Medical & Biological Engineering & Computing Vol. 53; no. 3; pp. 227 - 241 |
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| Autores principales: | , , , , , |
| Formato: | Journal Article |
| Publicado: |
Springer Nature
Mar2015
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=101005647&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 101005647 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 01400118 PO0 jtl: Medical & Biological Engineering & Computing issn: 01400118 maglogo: N pubinfo: dt: Mar2015 vid: 53 iid: 3 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 101005647 101005647 NLM25430421 10.1007/s11517-014-1227-x NLM25430421 101005647 ppf: 227 ppct: 14 formats: fmt: @attributes: type: P tig: atl: Synthesis of optimal electrical stimulation patterns for functional motion restoration: applied to spinal cord-injured patients. aug: au: Benoussaad, Mourad Poignet, Philippe Hayashibe, Mitsuhiro Azevedo-Coste, Christine Fattal, Charles Guiraud, David affil: DEMAR Group, LIRMM, INRIA, University of Montpellier 2, CNRS, 860 Rue Saint Priest 34095 Montpellier Cedex 5 France sug: subj: Spinal Cord Physiopathology Spinal Cord Injuries Therapy Movement Physiology Recovery Physiology Models, Biological Muscle, Skeletal Physiopathology Motion Knee Joint Physiopathology Male Middle Age Young Adult Muscle Contraction Physiology Electric Stimulation Methods Adult Clinical Assessment Tools Scales Middle Aged: 45-64 years Adult: 19-44 years Male ab: We investigated the synthesis of electrical stimulation patterns for functional movement restoration in human paralyzed limbs. We considered the knee joint system, co-activated by the stimulated quadriceps and hamstring muscles. This synthesis is based on optimized functional electrical stimulation (FES) patterns to minimize muscular energy consumption and movement efficiency criteria. This two-part work includes a multi-scale physiological muscle model, based on Huxley's formulation. In the simulation, three synthesis strategies were investigated and compared in terms of muscular energy consumption and co-contraction levels. In the experimental validation, the synthesized FES patterns were carried out on the quadriceps-knee joint system of four complete spinal cord injured subjects. Surface stimulation was applied to all subjects, except for one FES-implanted subject who received neural stimulation. In each experimental validation, the model was adapted to the subject through a parameter identification procedure. Simulation results were successful and showed high co-contraction levels when reference trajectories were tracked. Experimental validation results were encouraging, as the desired and measured trajectories showed good agreement, with an 8.4 % rms error in a subject without substantial time-varying behavior. We updated the maximal isometric force in the model to account for time-varying behavior, which improved the average rms errors from 31.4 to 13.9 % for all subjects. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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