EEG in

[Thomas Hudson]

There is a internet project to design and build an inexpensive
EEG. See http://www.brainmaster.com (this seems to be down at the
moment, try http://www.nacs.net/~tomc/ ). It's supposed be an open
design, though I've been unable to locate schematics.

Don Lancaster mentions an application in his _Active Filter Cookbook_
using bandpass filters for EEG.

See http://www.nacs.net/~tomc/brain/vision/freqs for a list of
frequencies and associated states.

Thomas


> -----Original Message-----
> From: owner-synth-diy at mailhost.bpa.nl
> [mailto:owner-synth-diy at mailhost.bpa.nl]On Behalf Of Frank Lemieux
> Sent: Wednesday, September 09, 1998 3:14 PM
> To: synth-diy at mailhost.bpa.nl
> Subject: EEG in
>
>
> Late late last night, I was thinking once again of devious new ways to
> interface myself to my synths, when it occurred to me: A mini-EEG!
>
> I saw a setup on television a couple years ago.  There was a man wearing a
> headband in front of an oscilloscope, controlling the pattern upon it.
> After a while practicing, he was able to raise and lower the bias of the
> signal at will.  He eventually applied this to the steering system of his
> sailboat.  Cut to scene of him sitting serenely on the bow, with a knowing
> grin as the boat turns on a thought...
>
> I just keep thinking this would be so cool, to play a nice line with both
> hands, and then as I get more into it and concentrate, my brain controls
> resonance and as I focus it all goes into squealy heaven. :)
>
> Has anyone done experiments with this type of thing?  I imagine it'd be
> possible to DIY..  skin electrode to hi-gain low-noise amp, lopass filter
> at about 40 hz to reduce hum and noise and other signals not from the
> brain...
>
> Has anyone done anything remotely similar to this DIY?  I need a starting
> point...
>
> 		--kh/ev--
>
>