Guest guest Posted May 28, 2006 Report Share Posted May 28, 2006 Our understanding is that is was a couple batches and they were fairly recent. I'm using recent ones and have had no problems--like others who have written to the group--but I also know tthat several folks got discouraged when two or three replacements failed in a row and gave up on them. If yours are working and have been, then it's likely you got a set from the batches that were not faulty. Pete > > From: " A " <PetePixxx@...> > Date: 2006/05/28 Sun PM 05:11:52 EDT > < > > Subject: Re: Active EEG system > > I've also got the active EEG 'trodes. I haven't had any problems so far. My concern is that when they short out they damage the box. Is there any way to check that if 'trodes are the bad kind? Perhaps a certain kind of twist or pull typically will hit the weak point? Is it safer to just get a new set? For replacement, is just one color bad, or could it be any of them? I'm starting to get worried. Is there a standard procedure, email , or call to make for this fix? Thanks! > > ~ A > Do Something Useful > > Active EEG system > > > Hi Pete: > > I just read your post about the problems folks have been having with > the actives. I,too, have/have had similar problems, but intermittently. > I've practically gone nuts (and required additional NF to restore > sanity!)trying to figure out wherein lies the problem. I'm using both > infinity with EEG-Z and BE systems. With the infinity, is it possible > that the black lead problem could cause an EEG-Z to burnout? Also, is > it possible that this has been the reason my BE system doesn't work at > all? The latter just gave up the ghost two weeks ago and I've been > thinking the problem was with the pendant or the dongle. Finally, if > there is a fix for the black lead (i.e. replacement), how do I get it. > Will it cost anything? > > Thanks Mucho, > Jeff > > > > > > > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted May 29, 2006 Report Share Posted May 29, 2006 Nick, There's nothing to do. If they don't work, you know it quite quickly--at least everyone who's had problems so far has--and if they are not the bad batch, then they'll work fine and you don't need to worry about it. The shorting takes place somehow inside the electrode, if I understand correctly. Pete > > From: NICK MAMMANO <nickmammano@...> > Date: 2006/05/29 Mon AM 06:08:32 EDT > > Subject: Re: Active EEG system > > I don't follow the argument that " shorting out the Active Electrodes " > damages the box " . When the linked-ear setup is used, the reference electrodes are effectively being shorted (impedance = 0) > > What exactly do we have to avoid when using these electrodes? > > nick Quote Link to comment Share on other sites More sharing options...
Guest guest Posted May 29, 2006 Report Share Posted May 29, 2006 Thanks, Pete. Just for the record--mine have worked perfectly for over a year with disposable Ag/AgCl pellets, Best investment I ever made. nick Van Deusen <pvdtlc@...> wrote: Nick,There's nothing to do. If they don't work, you know it quite quickly--at least everyone who's had problems so far has--and if they are not the bad batch, then they'll work fine and you don't need to worry about it. The shorting takes place somehow inside the electrode, if I understand correctly.Pete> > From: NICK MAMMANO <nickmammano@...>> Date: 2006/05/29 Mon AM 06:08:32 EDT> > Subject: Re: Active EEG system> > I don't follow the argument that "shorting out the Active Electrodes"> damages the box". When the linked-ear setup is used, the reference electrodes are effectively being shorted (impedance = 0) > > What exactly do we have to avoid when using these electrodes?> > nick Quote Link to comment Share on other sites More sharing options...
Guest guest Posted May 29, 2006 Report Share Posted May 29, 2006 Pete and Listmates, Just an FYI on the whole active electrode issue. I've had some problems over the last six weeks or so with my PET/active electrodes as well. The problem is only intermittend so i've been able to continue working with clients without significant difficulty. The problem seems to be with just one electrode - the Reference Ch 2 (yellow). If it stops working during a session, i just wiggle/tap on it and it seems to work again - sometimes indefinitely, other times it remained problematic for the rest of the day. This has only happened a handful of times though. Not sure if this is the same problem everyone else is having, or is unique to my PET.Thanks, Simone--- Van Deusen <pvdtlc@...> wrote: Nick, There's nothing to do. If they don't work, you know it quite quickly--at least everyone who's had problems so far has--and if they are not the bad batch, then they'll work fine and you don't need to worry about it. The shorting takes place somehow inside the electrode, if I understand correctly. Pete > > From: NICK MAMMANO <nickmammano@...> > Date: 2006/05/29 Mon AM 06:08:32 EDT > > Subject: Re: Active EEG system > > I don't follow the argument that "shorting out the Active Electrodes" > damages the box". When the linked-ear setup is used, the reference electrodes are effectively being shorted (impedance = 0) > > What exactly do we have to avoid when using these electrodes? > > nick __________________________Stops spam 100% for your email accounts or you get paid. http://www.cashette.com Quote Link to comment Share on other sites More sharing options...
Guest guest Posted May 29, 2006 Report Share Posted May 29, 2006 Simone, Inspect the electrode carefully from the wire coming out of the unit to the electrode itself. Make sure there are no crimps or breaks in the insulation and that the electrode head is not loose on the wire. You may beve an intermittent short in the electrode; if so, finding it early and getting it fixed or replaced before it fails can save you a lot of frustration down the road. Pete > > From: Simone Esquibel <simoneesq@...> > Date: 2006/05/29 Mon PM 01:57:43 EDT > > Subject: Re: Re: Active EEG system > > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted May 29, 2006 Report Share Posted May 29, 2006 Pete, I wonder if you might also comment about how you know when Neurotrodes have passed their expiration date? Does it show up in the signal? I've been using the same set for some time now, although I remember you saying 20 sessions might be the limit. Mark Darling Re: Active EEG system >> >> I don't follow the argument that " shorting out the Active Electrodes " >> damages the box " . When the linked-ear setup is used, the reference >> electrodes are effectively being shorted (impedance = 0) >> >> What exactly do we have to avoid when using these electrodes? >> >> nick > > > > > > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted May 30, 2006 Report Share Posted May 30, 2006 Mark, I've used mine more than 20 sessions. I watch the silver/silver-chloride central electrode for discoloration. Pete > > From: " Mark Darling " <mdarling@...> > Date: 2006/05/29 Mon PM 09:52:14 EDT > < > > Subject: Re: Re: Active EEG system > > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted May 30, 2006 Report Share Posted May 30, 2006 I've found that in about 5-10 uses, the dark silver-chloride starts to wear off and the silver shows through. I've changed them at that point. I'm still early in getting to know the Actives, but I remember once when the signal didn't look good, and looked good after the change to a fresh one. Pete, when you were here, yours were silver....and you said you wait for yours to start getting dark again. So??? I'll experiment some more with letting them go longer and get all silver... Re: Re: Active EEG system >> >> > > > > > > Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You are posting as a guest. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.