Skin conductance measurement

[David Glasgow]

The guy that designed it was nice enough to send me a copy of his 
thesis.  This, plus the posts from the Revistas makes it clear this is 
way out of my league.  So unless I am offered a Chair at MIT.......

Thanks anyway, and if anyone does anything on physiological measurement 
and Rev, be sure to post the news!


Best Wishes,

David Glasgow
Carlton Glasgow Partnership

http://www.i-psych.co.uk

On 29 Aug 2006, at 6:00 pm, use-revolution-request at lists.runrev.com 
wrote:

>
> Don't forget that a Bluetooth interface will also give the maximum 
> electrical isolation for the subject!!! (that would actually be my 
> FIRST concern!)
>
> Optoisolators or transformers must be used (it's probably a law) 
> between a human subject and anything connected to mains-based devices.
>
> That would rule out any DC-scaled sensors (most optoisolators are not 
> linear) unless they're wired into a data acquisition module at the 
> patient end. Old systems probably used PWM for output to get through 
> the isolation.
>
> Isolation and safety should be foremost in medical equipment design. 
> (Duh)
>
> Me? I don't want to write software that can blow up something, hurt 
> someone or get me sued! ( I guess that also means defense contracts?)
>
>
> Good luck with your new project. Multiply your estimate of how much 
> time it will take by 10, unless you can get out-of-the-box products to 
> do what you want. Interfacing with the noisy, drifting, always 
> changing Analog world after being in a nice, save, digital-stepped 
> world can be a bit jarring.
>
> I'd love to have a software-hardware Bluetooth breadboard kit, with 
> rev XCMDs for all platforms.
>
> [I can dream - or make one!!]
>
>
> sqb
>
>>
>> Then you'll have to learn how to program the PIC microcontroller to
>> access the EDA device data and communicate with the main app. You
>> could probably get by without the Bluetooth if you could deal with the
>> limited portability, as that's what would eat up most of the battery
>> power, but portability seems one of the primary advantages of this
>> project. All in all, I think this isn't something I'd want to tackle
>> without having something like the resources of an MIT behind me - note
>> that this project was a Mechanical Engineering thesis.
>>
>> --
>> -Mark Wieder
>>  mwieder at ahsoftware.net