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View Full Version : Re: Technical problems and solutions for measuring intramuscularEMG



Belluye Nicolas
02-09-1999, 07:11 PM
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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