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Hi Neil and all, As you know there are numerous practical problems associated with EMG based control. Not to mention all the various bits of hardware usually required just reproduce a reliable single switch contact. In the case of the Cyberlink (as far as I know) that also includes the computer. I was looking into this last year and came across a device called the Myoswitch sold by the Bloorview Macmillan Centre in Toronto that 'appears' to be right for the job: http://www.ortc.on.ca/red/html/electronics.html. I don't have any experience of using this device as it doesn't have a supplier in the UK. Also, as far I'm aware the Myoswitch isn't yet CE marked under the MDD. If anyone out there does have further info about this it would be much appreciated here as well. (Is there anyone involved with the provision of myoelectically conrolled prostheses on Assistech yet?) Regards, Aejaz Zahid Clinical Scientist SYC-HAZ Clinical Engineering Service Barnsley DGH NHS Trust, UK T:01226-730000 x2159 F:01226-208159 -----Original Message----- From: p=NHS NATIONAL INT;a=NHS;c=GB;dda:RFC-822=ASSISTECH(a)JISCMAIL.AC.UK; Sent: Monday, November 12, 2001 2:08 PM To: p=NHS NATIONAL INT;a=NHS;c=GB;dda:RFC-822=ASSISTECH(a)JISCMAIL.AC.UK; Subject: EMG Switching Dear All, Does anybody have some good ideas about reliable EMG sensing equipment used to create an on/off output, i.e. for switching. The device would need to easily set up by a non-technical person and as small as possible. Isolation of the patient electrically is of course paramount. Devices we've tried in the past are listed below. We would now like to extend our possibilities. ProComp from Though Technology, http://www.thoughttechnology.com and Myo-electric from Aleph 1, http://www.aleph1.co.uk/bio/ds02.html To give you some background we have various patients/clients with brain injuries such as Brain Stem Stroke that result in only eye movement or cheek movement and we want to use this movement functionally for as much communication independence as possible. Thanks, Neil Gregory Clinical Engineer Access to Communication and Technology West Midlands Rehabilitation Centre, England [log in to unmask] Tel. UK +44 (0)121-627 8235 Fax. UK +44 (0)121-627 8892 This e-mail contains proprietary information some or all of which may be legally privileged. It is for the intended recipient only. If an addressing or transmission error has misdirected this e-mail, please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail.