[Noisebridge-discuss] openeeg

[Mikael Vejdemo Johansson]

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On Mar 17, 2009, at 2:33 PM, Meredith L. Patterson wrote:
> I dunno, reading Vlad's post, it sounds more like he'd be writing
> scripts that read in time-domain data and translate that into music.
> Automatic music generation is pretty interesting, and you can often  
> get
> something that even sounds like music once you find a pattern in the
> original source. Think of it as "audialization" rather than  
> "visualization".
>

Sonification is the term used by the geeks in that particular area. :-)

> I'd be interested to hear what different people's brains "sound"  
> like in
> various conditions. A friend is getting my husband an OpenEEG for his
> birthday, so when that gets here, one of the things I want to play
> around with is just mapping the serial output to a tone generator in
> various ways -- linear or geometric translations to something
> human-audible, operations on derivatives of the curve described by the
> serial output, I dunno. It's math. Sometimes it sounds like things.
>

Sounds like stuff you could have fun with!

> --mlp
>
> Jonathan Foote wrote:
>> Judging by some of this traffic, I think people have misconsceptions
>> regarding EEGs and would do well to read up on it a bit. EEGs are not
>> a "brain jack." You are not going to control anything reliably, and
>> even detecting anything is hard. (Yes, you've seen the monkey move  
>> the
>> robot arm video. That's not EEG: that measured specific neural  
>> regions
>> using electrodes inserted through a hole in the skull.)
>>
>> At best, you can measure the energy in the various bands (alpha,  
>> beta,
>> etc.) with pro EEG gear and (lots of) good electrodes. How and  
>> whether
>> this correlates with particular mental activities or emotions is  
>> still
>> an open research question. With practice, you can likely change your
>> alpha/beta ratio but it's going to take the better part of a minute  
>> if
>> you can do it at all.  And noise and muscle movements (e.g. blinking)
>> will give you 10x the signal of anything going on in the brain.
>>
>> I don't mean to say that this isn't an excellent thing to be
>> interested in or to hack on, just that it's much easier to get your
>> expectations up than it is to get anything actually working -- see
>> Emotiv as an example of hype vs. reality.
>>
>> Art projects using the EEG like Kal's robot or the Monochrom drink
>> machine are cool and fun, but they basically use EEG as a glorified
>> random noise source. It would be excellent to do something better.
>>
>>
>> On Tue, Mar 17, 2009 at 1:16 PM, Vlad Spears  
>> <spears at 2secondfuse.com> wrote:
>>>> Al Billings wrote:
>>>>> Jake has mentioned some interest in hacking openeeg. This has been
>>>>> discussed here before.
>>>>>
>>>>> Other than him and I, who else is interested in this kind of  
>>>>> project?
>>>
>>> I'd definitely like to work on an OpenEEG project.  I've  
>>> considered building
>>> my own several times in the past, but thought I would give Emotiv  
>>> a bit more
>>> time to reach the market.  My end goal would be to use the stream  
>>> of data to
>>> guide musical machinery in Max/MSP, Pd and bridged DAW  
>>> environments using
>>> OSC or MIDI.
>>>
>>> I bet I can make my brain sound like drum 'n' bass.
>>>
>>> Vlad
>>> _______________________________________________
>>> Noisebridge-discuss mailing list
>>> Noisebridge-discuss at lists.noisebridge.net
>>> https://www.noisebridge.net/mailman/listinfo/noisebridge-discuss
>>>
>> _______________________________________________
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>> https://www.noisebridge.net/mailman/listinfo/noisebridge-discuss
>
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Mikael Vejdemo Johansson, Dr.rer.nat
Postdoctoral researcher
mik at math.stanford.edu





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