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Re: Technical problems and solutions for measuring intramuscularEMG

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  • Re: Technical problems and solutions for measuring intramuscularEMG

    Hello,
    You can find solutions for measuring intramuscular EMG in reading the
    following thesis :
    Planquart Vincent, Etude du cycle allongement - raccourcissement de six
    muscles du membre inférieur de l’Homme par une mesure non invasive de la
    pression intramusculaire, thèse de doctorat de l’université de Bordeaux 2
    (France), 22 janvier 1999

    Good luck,
    BELLUYE Nicolas

    Adrian Bisig a écrit :

    > Dear Listmembers,
    > Recently I asked for solutions of problems in measuring intramuscular
    > EMG using fine-wire electrodes.
    >
    > There were a few replies which I want to post on Biomch-L. Thank you
    > very much for your answers:
    >
    > To avoid or solve problems during measuring intramuscular EMG using fine
    > wire electrodes you can / should ...
    >
    > -take a impedance meter and check each electrode within the needle
    > before insertion
    >
    > -secure if the leads are not to short (which would produce a flat line)
    >
    > -secure if the ends of the wires are staggered enough, so that the
    > stripped ends do not make any contact
    >
    > -stripping the insulation off the ends of the wires for 1 mm
    >
    > -interface the proximal ends of the wire into coils of springs directly
    > taped to the skin near insertion side
    >
    > -be very carefully not to pull the wires after successful application
    > (because of the possible lost of staggering into the muscle)
    >
    > -try to pull one wire carefully if you do not measure any signal
    >
    > -twist the two wires after it has been threaded into the needle
    > (twisting reduces noise)
    >
    > -add a extra coat of teflon insulation to ensure adequate insulation
    > (especially at the sharp end of the needle insulation can be faulty and
    > make contact)
    >
    > -use ultrasound to confirm correct placement of the wires
    >
    > -find helpful information in:
    > Burgar C.G., Valero-Cuevas F.J. and Hentz V.R. (1997). Fine-wire
    > electromyographic recording during force generation. Application to the
    > index finger kinesiologic studies. Am J Phys Rehabil 76(6):494-501
    >
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    adr:;;Laboratoire,Mécanique Physique, Université Bordeaux I, 351 cours de la Libération;Talence;;33405;FRANCE
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    title:Engineer PhD & Biomechanical Consulting
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