[Eeglablist] Electrolyte gel question

[Makoto Miyakoshi]

We (Swartz Center) use Signa gel, manufactured by Parker.

Makoto

On Wed, Dec 2, 2015 at 12:42 PM, Stephen Politzer-Ahles <
stephen.politzer-ahles at ling-phil.ox.ac.uk> wrote:

> Hi Pamela,
>
> Most of the gels I have used also have [small] bubbles in them, and as
> far as I know it hasn't affected the recording quality; they get
> rubbed out anyway when I apply the gel and rub it around, abrade the
> skin, etc.
>
> In my experience, I can get the gel I use to be less bubbly if I stir
> it vigorously, although I'm not sure if it really matters.
>
> I've generally had good luck with SuperVisc high viscosity gel
> recently (
> http://www.brainproducts.com/files/public/products/brochures_material/pr_articles/0801_SuperVisc_FM.pdf
> ),
> and with similar gels in the past (although I don't have the exact
> names on hand; I think the manufacturer was ElectroCap).
>
> Best,
> Steve
>
> On 12/2/15, Makoto Miyakoshi <mmiyakoshi at ucsd.edu> wrote:
> > Dear Pamela,
> >
> > Would you mind letting me know source of info that bubbles in the gel
> > affect recording quality? I want to learn it more.
> >
> > Makoto
> >
> > On Tue, Dec 1, 2015 at 2:29 PM, Pamela Leigh Stevenson <
> > pamela.stevenson at unb.ca> wrote:
> >
> >> Hello everyone!
> >>
> >>
> >> I would like to get your advice on an issue related to electrolyte gel:
> >>
> >>
> >> We ordered some electrolyte gel this summer and noticed that it arrived
> >> full of bubbles. We contacted the company to let them know and they send
> >> us
> >> some replacement gel. Unfortunately, the replacement gel has just as
> many
> >> bubbles as the original batch. We sought advice on how to decrease the
> >> amount of bubbles from the company who makes the gel, but nothing they
> >> suggested has helped. This has made data collection much more difficult
> >> (in
> >> terms of reducing electrode impedance).
> >>
> >>
> >> Have any of you experienced this? If so, have you been able to reduce
> the
> >> amount of bubbles in the gel? Can anyone suggest a brand of gel that you
> >> have had a good experience with?
> >>
> >>
> >> Thank you for your advice/suggestions!
> >>
> >> Pam
> >>
> >>
> >> _______________________________________________
> >> Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html
> >> To unsubscribe, send an empty email to
> >> eeglablist-unsubscribe at sccn.ucsd.edu
> >> For digest mode, send an email with the subject "set digest mime" to
> >> eeglablist-request at sccn.ucsd.edu
> >>
> >
> >
> >
> > --
> > Makoto Miyakoshi
> > Swartz Center for Computational Neuroscience
> > Institute for Neural Computation, University of California San Diego
> >
>
>
> --
>
> ---
> Stephen Politzer-Ahles
> University of Oxford
> Language and Brain Lab, Faculty of Linguistics, Phonetics & Philology
> http://users.ox.ac.uk/~cpgl0080/
> <http://www.nyu.edu/projects/politzer-ahles/>
>



-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sccn.ucsd.edu/pipermail/eeglablist/attachments/20151202/af33f3b9/attachment.html>