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Evolution of surface motor activation zones in hemiplegic patients during 20 sessions of FES therapy with multi-pad electrodes

Jovana Malešević, Matija Štrbac, Milica Isaković, Vladimir Kojić, Ljubica Konstantinović, Aleksandra Vidaković, Suzana Dedijer, Miloš Kostić, Thierry Keller
  • Matija Štrbac
    Tecnalia Serbia Ltd., Belgrade; University of Belgrade – School of Electrical Engineering, Belgrade, Serbia
  • Milica Isaković
    Tecnalia Serbia Ltd., Belgrade; University of Belgrade – School of Electrical Engineering, Belgrade, Serbia
  • Vladimir Kojić
    Tecnalia Serbia Ltd., Belgrade; Innovation Center, School of Electrical Engineering - University of Belgrade, Belgrade, Serbia
  • Ljubica Konstantinović
    Faculty of Medicine - University of Belgrade; Clinic for Rehabilitation “Dr Miroslav Zotović”, Belgrade, Serbia
  • Aleksandra Vidaković
    Faculty of Medicine - University of Belgrade; Clinic for Rehabilitation “Dr Miroslav Zotović”, Belgrade, Serbia
  • Suzana Dedijer
    University of Belgrade, Belgrade; Clinic for Rehabilitation “Dr Miroslav Zotović”, Belgrade, Serbia
  • Miloš Kostić
    Tecnalia Research & Innovation – Health Division, San Sebastián, Spain
  • Thierry Keller
    Tecnalia Research & Innovation – Health Division, San Sebastián, Spain

Abstract

The purpose of this study was to examine surface motor activation zones for wrist, fingers and thumb extension movements and their temporal change during 20 therapy sessions using advanced multi-pad functional electrical stimulation system. Results from four hemiplegic patients indicate that certain zones have higher probability of eliciting each of the target movements. However, mutual overlap and variations of the zones are present not just between the subjects, but also on the intrasubject level, reflected through these session to session transformations of the selected virtual electrodes. The obtained results could be used as a priori knowledge for semi-automated optimization algorithm and could shorten the time required for calibration of the multi-pad electrode.

Keywords

Functional electrical stimulation; Multi-pad electrode; Motor activation zones; Upper extremity; Stroke

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Submitted: 2016-06-06 12:52:13
Published: 2016-06-13 16:48:30
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Copyright (c) 2016 Jovana Malešević, Matija Štrbac, Milica Isaković, Vladimir Kojić, Ljubica Konstantinović, Aleksandra Vidaković, Suzana Dedijer, Miloš Kostić, Thierry Keller

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