From: peterson_at_d...
Date: 2001-04-04 21:52:49
Just what is it you folks have against "goop" anyway? I've been
using electrodes with abrasive goop, with sticky goop, and with just
plain gooey goop for years, and if the alternative is expensive wet
(rather than gooey) electrodes, I guess my patients (and I) will just
have to put up with goop for another bunch of years.
Jim
--- In buildcheapeeg_at_yahoogroups.com, rfphill_at_h... wrote:
> You said:
> > Finally, you mentioned you were in discussion with an electrode
> > supplier. What kind of electrodes are you thinking of using? Is
> it
> > possible to use flextrodes (from Brainmaster) which require no
gel?
>
>
> In response to your question about flextrodes. A quick evaluation
of
> this item and one might quickly realize how easily they can be
> constructed with the right materials. The electrodes themselves
are
> standard cup types wrapped in a sponge (I think a cotton felt).
The
> electrode holder itself might be difficult to duplicate as it might
> be a custom design. But careful inspection could yield a few
> alternatives for the mechanically minded. The holders are by far
the
> most engineered aspect of the headgear, and it's two pieces of
> plastic (not to belittle it by any way, I would buy Flextrodes in a
> second if 200 dollars were easy to come by). That's an
> oversimplification of course, but I think an mechanical engineer
> could find a alternative design using off the shelf items in any
> hardware store. Add elastic and velcro and viola! Again, I think
> it's creator did a great job of designing a simple but effective
> alternative to the goop methods.
>
> The idea of using an electrolyte soaked sponge as a substitute for
a
> dollop of paste is not new is it? I'm asking. In my web searches
in
> search of an alternative to paste/gels without the cost of
> Flextrodes, I think I've seen a few ideas that were similar.
> Brainmaster has simply packaged the idea up in a sensible device in
a
> sensible manner.
>
> I'm no engineer and a relative newcomer to NF so take my comments
> with a grain of salt, I guess. I'm just envisioning a companion
> design doc illustrating the building of a cheap "flextrode"-type
> headgear using readily available items (to go along with a cheap
eeg
> design doc).
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