[sdiy] brainwaves to CV :O)

[Karl Ekdahl]

On the note that the brain is 3-dimensional and EEG just measures the surface; If i'm not misstaken, one of the things ERP does is using multi electrode systems (32-64 electrodes rather then EEGs 3-8) to be able to pin-point signals in 3 dimensions.

Also the fact that the brain does not gain anything from emitting signals through the skull doesn't necessarily mean you can't eavesdrop...

A friend of mine brought a EEG system to me and i helped him making it work with his modular, instead of using it to monitor brain activity he used it to measure face muscle movement; 

http://www.jimmyjoeroche.com/labyrinth.html

Karl

--- Den fre 2010-09-10 skrev Tom Wiltshire <tom at electricdruid.net>:

> Från: Tom Wiltshire <tom at electricdruid.net>
> Ämne: Re: [sdiy] brainwaves to CV :O)
> Till: synth-diy at dropmix.xs4all.nl
> Datum: fredag 10 september 2010 13:42
> There has been work done in this area
> for the development of intelligent prosthetics.
> 
> Interestingly, these tend to follow Scott's logic, and use
> sensors attached to *muscles* (in the chest, in one example
> I remember) rather than trying to pick up the signal direct
> in the brain. That way the hardware doesn't have to do so
> much decoding, since the *purpose* is already present.
> 
> An example from the BBC News:
> 
> http://news.bbc.co.uk/1/hi/health/8677132.stm
> 
> T.
> 
> 
> 
> On 9 Sep 2010, at 23:24, Scott Gravenhorst wrote:
> 
> > Perhaps my expression "leave the brain" isn't accurate
> as is - sure signals leave the
> > brain, but they do so conducted by electochemical
> nervous connections, not by
> > through-the-air propogation or even bone-tissue-skin
> conduction which can be sensed by
> > electronic equipment.
> > 
> > My point is that the connections through nerves to
> activate muscles and receive sensory
> > signals were rewarded by evolution and their functions
> advanced due to the rewards.  No
> > such reward has been provided by nature regarding
> signals that can be sensed by elecronic
> > connections attached to the exterior of the skull.
> 
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