[EEG] open eeg/ocz nia "success"

Jonathan Foote jtfoote at ieee.org
Mon Oct 5 09:35:34 PDT 2009


Hey Josh,

Welcome! Our group has lost a little momentum so it's great to hear
from new people.

Our grand plan was to  build a multi-channel rig using multiple
OpenEEG boards. Several of us have built two-channel versions; the
digital motherboard will support up to six (three analog boards). We
have acquired a 19(?) -electrode head cap and Tracy built a nice
enclosure with mini-XLR jacks. We have some neurobiology, signal
processing and machine learning expertise on board, so now I think all
we need to do is to put everything together!

If you want to, skim the mailing list archives
https://www.noisebridge.net/pipermail/eeg/ and we look forward to
meeting you in person.

(To the group: I noticed our wiki page either disappeared in the reorg
or never existed, so I made one: https://www.noisebridge.net/wiki/EEG)

Cheers,

Jon


On Sun, Oct 4, 2009 at 11:56 PM, Josh Bailey <josh at anarkiwi.com> wrote:
>
> What an inspiration it is to have other local enthusiasts. Found I had an
> obsolete motherboard with a real parallel port on it, and lashed it
> together long enough to run Linux off of DVD and run sp12 on it.
>
> Now my openeeg is breathing and I can get a test pattern all the way
> through from the analog board. Nice.
>
> I suppose the next stage is electrodes. Oh well. Back to the day job for
> now.
>
> On Mon, 5 Oct 2009, Josh Bailey wrote:
>
>>
>> Hi all;
>>
>> Am completely new to the group; happy that there are other people local
>> playing with this stuff!
>>
>> Seen some discussion re both OpenEEG and the OCZ NIA.
>>
>> I have an OCZ NIA and have gotten some joy, with some very very hacky code
>> just reading from Linux USB HID "stack" (on taking this guy to pieces it's
>> seems to be just an audio b/w stereo DAC that just streams samples at you
>> all day long):
>>
>> http://casuallethality.com/?p=199
>>
>> I freely admit I have no real clue, but I think I have gotten beta out of
>> it at 28Hz (and a big 60Hz spike where I expect it to be). Perhaps someone
>> with more clue than I would care to venture an opinion as to whether my
>> results are plausible? I'll happily share my code with other OCZ owners
>> (well, anyone really).
>>
>> If I'm going in the right direction figured it might make more sense to
>> record a lot more data (say, overnight), so ICA has something to feed on.
>> Bit challenging with this device as it's only two channels, the electrodes
>> are pretty perspiration sensitive, and the device's grounding SUCKS!
>>
>> Regarding OpenEEG - I have built up both an analog and digital board pair,
>> but I don't have an old Windows box to program the Atmel on the digital
>> board (I'm an all Linux/Mac shop, one has one's principles).
>>
>> I don't suppose anyone would happen to be willing to flash my Atmel so I
>> don't have to buy an old clunker and put Windows on it? Programmer won't
>> work under Vista because of excessive parallel port HAL, and it wants to
>> bit bang - I think - I am not a strong enough Windows guy.
>>
>> Last thing. Friend of mine at the VA is studying whether concussion
>> injuries can be diagnosed by EEG. She keeps claiming to be able to give me
>> some 256-channel recordings - I will follow that up. If it's OK with
>> her/ethics/anonymised and all that will seek permission to obtain and
>> share it (at the very least may be a good control set vs. homebrew).
>>
>> Sorry for the long post,
>>
>>
>
> --
> Josh Bailey (josh at anarkiwi.com)
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>



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