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PostPosted: Wed Sep 13, 2017 7:46 am 
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Joined: Tue Dec 04, 2012 3:53 pm
Posts: 564
Location: INRIA Rennes, FRANCE
Hi Patrick, thanks for the heads-up!

The CoAdapt P300 speller works quite differently to the basic P300 and XDAWN spellers we have, and I actually expect it to work better if you get it to work (its better for example due to smarter selection of the number of flashes). However, the CoAdapt version is technically complicated to use and maintain. We didn't ultimately have anybody to keep it working along in newer openvibes. The original authors of the CoAdapt decided not to work on it anymore, but implemented yet another openvibe-based P300 which unfortunately at present is not included in OpenViBE or even public (afaik).


Cheers,
Jussi


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PostPosted: Wed Sep 13, 2017 7:58 am 
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Joined: Thu Jun 29, 2017 9:32 pm
Posts: 9
Hey Jussi,
thanks for your reply. I understand.

I tried installing again the new version from scratch, tried a different PC and a different OpenBCI board but all with the same result of 'A' prediction. I finally gave up and built a Matlab version and working on that at the moment. However if you want me to do some tests for you to track the issue, just let me know.

Thanks for all your replies, I can imagine the amount of requests you receive.

Patrick


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PostPosted: Wed Sep 13, 2017 8:20 am 
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Joined: Tue Dec 04, 2012 3:53 pm
Posts: 564
Location: INRIA Rennes, FRANCE
If you can get the matlab version working with a signal file you've recorded with the openvibe P300 stimulator scenario, but that doesn't work with our scenarios (for example gives only A predictions), I could try to figure out with the file whats wrong and try to compare whats different in the corresponding signal processing. Best would be to have one data file recorded for train, the other for test.

Have you had success with Matlab yet?

Thanks,
Jussi


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