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Glad its helpful! The words+ EMG box - are you sure it wasn't the impulse? They were selling that for sometime.. I understand its still available in the US.. We have the twitch switch - its pretty much a piezo plate - no gel required. Its a bit tricky to keep attached.. and its a bit flaky about reliably setting thresholds due to this. Sound switch - got a couple of those. They can be pretty good - and we recently met someone who has been using this reliably for sometime. For a call alarm, a switch that requires power I guess is going to get a few points marked off the risk/benefit analysis.. Good luck with it all - and yep, keep us posted :) w > On 31 Mar 2015, at 09:31, Gregory, Neil <[log in to unmask]> wrote: > > Will, > > This is extremely helpful thank you. > > I seem to recall a Words+ device (from way back), rpesume not available as I couldn't uncover it on the web. > > Sound Operated Switch - I've asked Inclusive if they still have the piezo part as it's not coming up on their website > Twitch Switch - I've requested a number of details, CE marking, how to attach the sensors, if gel is required etc. > > I think the RAATE conference would also be a useful forum for this not directly working in AAC. > > I'll aim to keep you/group informed as I get details. > > There have been very few responses, which makes me think that EMG switching is done very rarely. > > In my situatino I'll need to consider carefully the reliability and accuracy of the system as the specific needs are for attention calling. Risk/benefit to be done! > > Kind regards, > > Neil Gregory > Senior Bio-Engineer > WeSTMARC - West of Scotland Mobility and Rehabilitation Centre > Southern General Hospital, Glasgow > Email: [log in to unmask] > Web: www.nhsggc.org.uk/your-health/health-services/westmarc/ > > Tel - 0844 8113001 (Lo-Call) > Fax - 0141-201 2649 > <image001.png> > > From: A discussion list for Assistive Technology professionals. [mailto:[log in to unmask]] On Behalf Of Will Wade > Sent: 27 March 2015 16:31 > To: [log in to unmask] > Subject: Re: EMG Switches? > > I think EMG switches are great. > The problem is finding the right one. In short there isn’t much out there right now that’s commercially available in the UK. This is my current list of products out there.. > https://gist.github.com/willwade/d64458a1f557b0ced6a3 > > Yes, as Geoff H has pointed out before, I’m terming these all very loosely in that document... Plux, EMGSwitch, Neuroswitch, Impulse and Brainfingers are the only ones in that list that are truly EMG. Brain fingers is even a bit wooly – It does more than just EMG but most of the demos I’ve seen of it for AAC/AT usage is just as a EMG switch.. > > We’ve got a case study who has trialled the neuroswitch. It went really well. They went quickly from a large twitch (sensors on Vastus Lateralis R) to un-noticeable twitch – with a marked decrease in associated postural reactions. However I think this is somewhat due to the way the neuroswitch works (and should I say Brainfingers – and also Plux – but that is quite unreliable) in that you get a realtime graph of your muscle contractions. You can tenuate your contractions down along with the graph. This biofeedback is pretty useful in the training of use of a switch. You can do it without that – its not that big a deal but I feel (and that’s the crucial word here – there is little written evidence for all of this in this field) that it would probably lead to a quicker learning curve. > > However.. The neuroswitch is tied to a computer. Which is a pain (and yes, its a little expensive..). The alternative is the EMGSwitch from tinkertron. This has really good battery life – is relatively cheap – and works reliably. The downside – with both this and the neuroswitch – is having three electrodes (one being the reference electrode). However if you are looking for use with AAC then its ok as your likely to use it every day all the time. The other downside for the UK is that there are only two units in the UK – and one has only been on loan – the other is sitting by the side of me. It leads to a fun question about CE marking - If anyone is wanting to buy one for NHS work we have gone through the risk assessment process for it and happy to share the documentation if required (we are seeking clarification from MHRA on CE marking for it – before it ends up with a client..). > > I’m intending to write a paper for CM on the topic – if it gets accepted I’ll be there and give you a demo of the one from Tinkertron. > > I have a hunch that you should be able to scan far far quicker than any other regular physical pressure switch due to the reduced co-ordination required. This is a nice little demo from Michael Phillips using neuroswitch (NB: That’s real time scan speed). https://www.youtube.com/watch?v=oSM6rLGz14s > > w > > From: <Gregory>, Neil <[log in to unmask]> > Reply-To: "A professionals." <[log in to unmask]> > Date: Friday, 27 March 2015 15:46 > To: "A professionals." <[log in to unmask]> > Subject: EMG Switches? > > Hi All, > > Friday afternoon question. I wonder what peoples' experiences are with EMG Switches? It has been quite a while since I've used on. How easy are they to set up, how reliable are they etc? I have a boy with Duchenne's MD and this may be a suitable option. > > Regards, > > Neil Gregory > Senior Bio-Engineer > WeSTMARC - West of Scotland Mobility and Rehabilitation Centre > Southern General Hospital, Glasgow > Email: [log in to unmask] > Web: www.nhsggc.org.uk/your-health/health-services/westmarc/ > > Tel - 0844 8113001 (Lo-Call) > Fax - 0141-201 2649 > <image001.png> > > **************************************************************************** > NHSGG&C Disclaimer > > The information contained within this e-mail and in any attachment is > confidential and may be privileged. 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