[EEG] From the God Helmet to the Math Helmet?

[Harry Meier]

Is anyone out there working on a "safe" DIY design for a tDCS device?

I've been out looking at the commercial devices used in this study, and
while they're a bit more than just a 9V battery, they're certainly not too
complex. It looks to me like just a low amperage DC power supply with a
built in ammeter feedback loop and safeties to make sure only the prescribed
1-2mA is being delivered. The simplest design would just involve a power
regulator circuit, a micro controller, a digitally variable current divider,
some resistors, and some electrodes ... and a 9V battery.

Harry
Heatsync Labs
Chandler, AZ

On Tue, Nov 9, 2010 at 3:38 PM, Jean Rintoul <jean.rintoul at gmail.com> wrote:

> Yeah tDCS seems interesting. Amazing!
>
> All you need is a 9V battery. Sweet.
> http://brainstimulant.blogspot.com/2008/06/tdcs.html
> and
> http://www.cell.com/current-biology/abstract/S0960-9822%2810%2901234-0
>
> It enhances existing networks, instead of disrupting them like TMS. I'd be
> more into that than TMS, and the device sounds simple to make.  It's very
> general and not particularly localized though. Not many studies so far, and
> its simplicity makes it sound dodgy. Sometimes the best ideas are the
> simplest though, so eh.
>
> Also, they can apparently use pulsed ultrasound for noninvasive localized
> brain stimulation(from another another list).
>
> http://pages.synsonix.com/technology/scientific-overview
> http://spectrum.ieee.org/tech-talk/biomedical/devices/bursts-of-lowintensity-ultrasound-make-neurons-fire
> http://www.cell.com/neuron/abstract/S0896-6273(10)00376-4<http://www.cell.com/neuron/abstract/S0896-6273%2810%2900376-4>
>
> Jean
>
>
> On Tue, Nov 9, 2010 at 8:21 AM, Jonathan Foote <jtfoote at ieee.org> wrote:
>
>> This is pretty wild:  "Brain stimulation [TCDS] to the parietal cortex
>> can enhance or impair numerical abilities"
>>
>> http://bit.ly/bUUaq2
>>
>> (Ridiculous original url:
>>
>> http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VRT-51D0G1V-2&_user=10&_coverDate=11%2F04%2F2010&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort=d&_docanchor=&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=6231a654fac92715d5d05475735f5ca2&searchtype=a
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>
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