Search found 12 matches

by TPAC
Wed Nov 28, 2012 11:17 am
Forum: Acquisition server and drivers
Topic: Acquisition of signals from 2 Emotiv Epoc headsets
Replies: 15
Views: 29054

Re: Acquisition of signals from 2 Emotiv Epoc headsets

Hi Maarten, Do you use the Emotiv Research Edition SDK_v1.0.0.5-PREMIUM ? From my experience, there is no hope with older versions of the SDK... I also remember that one should plug each headset sequentially : first plug dongle 1, then set headset 1 to ON (check the two green lights on the dongle), ...
by TPAC
Mon Apr 30, 2012 2:43 pm
Forum: Designer
Topic: Run Openvibe in batch mode ?
Replies: 4
Views: 5788

Re: Run Openvibe in batch mode ?

Hi,

This is exactly what I wanted !
Thank you very much !

TPAC
by TPAC
Fri Apr 27, 2012 12:33 pm
Forum: Designer
Topic: Run Openvibe in batch mode ?
Replies: 4
Views: 5788

Run Openvibe in batch mode ?

Hi all, The optimization of BCI performance may sometimes require the fine tuning of many parameters. I'm thus wondering if it is possible to run Openvibe in batch mode instead of using the GUI. Indeed, it would be really interesting (and time-saving) to have the possibility to train a BCI automatic...
by TPAC
Tue Mar 20, 2012 2:19 pm
Forum: Acquisition server and drivers
Topic: Acquisition of signals from 2 Emotiv Epoc headsets
Replies: 15
Views: 29054

Re: Acquisition of signals from 2 Emotiv Epoc headsets

Hi all, Finally, it seems that getting the signals from 2 Emotiv headsets in Openvibe is possible, provided that : 1) you use the Emotiv Research Edition SDK_v1.0.0.5-PREMIUM 2) in ovasCDriverEmotivEPOC.cpp, you search for this line : if(m_bReadyToCollect) and you replace it with : if(m_bReadyToColl...
by TPAC
Mon Jan 16, 2012 2:40 pm
Forum: Acquisition server and drivers
Topic: Acquisition of signals from 2 Emotiv Epoc headsets
Replies: 15
Views: 29054

Re: Acquisition of signals from 2 Emotiv Epoc headsets

Hello all, Sorry for giving my feedback so late. After my first investigations, it appeared that 2 headsets (Research edition) can be seen by the same machine using the Control Panel and Test Bench softwares from the EMOTIV company. Actually, it is not a big discovery. This is just a confirmation of...
by TPAC
Thu Sep 29, 2011 8:48 am
Forum: Acquisition server and drivers
Topic: Acquisition of signals from 2 Emotiv Epoc headsets
Replies: 15
Views: 29054

Re: Acquisition of signals from 2 Emotiv Epoc headsets

Hello Laurent, Yann,

Thank you for your help. I will investigate this and will give you a feedback...

Regards,

TPAC
by TPAC
Wed Sep 21, 2011 2:40 pm
Forum: Acquisition server and drivers
Topic: Acquisition of signals from 2 Emotiv Epoc headsets
Replies: 15
Views: 29054

Acquisition of signals from 2 Emotiv Epoc headsets

Hi all, I'm wondering if it is possible to get the signals from 2 (or more) EMOTIV Epoc headsets in Openvibe. For instance, this would allow to create nice multi-player games based on motor-imagery or any other BCI paradigm... Emotiv people told me it was definitely possible to connect several heads...
by TPAC
Mon Mar 28, 2011 11:57 am
Forum: Boxes
Topic: P300 LDA classifier with GDF and OV input files
Replies: 4
Views: 3783

Re: P300 LDA classifier with GDF and OV input files

Hello ddvlamin, Thank you for your quick response ! As you explained, the difference between the generic stream reader/writer and gdf reader/writer is the number of streams of stimulations available (limited to 1 in the case of gdf). Your idea is great and is totally working for me: 1) convert the ....
by TPAC
Mon Mar 28, 2011 9:53 am
Forum: Boxes
Topic: P300 LDA classifier with GDF and OV input files
Replies: 4
Views: 3783

P300 LDA classifier with GDF and OV input files

Hi all, I succeeded in training an LDA classifier for a P300 BCI application, using experimental data recorded in a .ov file. I tried to do the same job with the same data but first converted in a GDF file. In this case, my scenario is not working, and is pending forever... It seems that information...
by TPAC
Mon Mar 28, 2011 9:07 am
Forum: Boxes
Topic: About GDF writer after decimation or channel selection
Replies: 4
Views: 3546

Re: About GDF writer after decimation or channel selection

Yes actually it happens with EEGLAB, which works (via Biosig) with GDF files version 2.11, whereas Openvibe manages GDF files version 1.25. The problem I was mentioning is that after decimation or channel selection, the gdf file header (at least seen by EEGLAB) is not modified... one can of course l...
by TPAC
Fri Mar 11, 2011 11:16 am
Forum: Boxes
Topic: About GDF writer after decimation or channel selection
Replies: 4
Views: 3546

About GDF writer after decimation or channel selection

Hi all, I experienced some trouble with the GDF file writer after having used the decimation or channel selection boxes. The file is well created, but apparently, the header is not updated with the new values of parameters like number of channels or sampling frequency. This causes trouble when readi...
by TPAC
Thu Mar 10, 2011 10:40 am
Forum: Discussion about OpenViBE
Topic: ANT EEprobe .cnt to Openvibe .gdf
Replies: 7
Views: 8791

Re: ANT EEprobe .cnt to Openvibe .gdf

Hi, Openvibe apparently manages GDF files in version V1.25. If you export EEG data from EEGLAB in a GDF file, this will be created using the gdf 2.11 version, which is not readable by Openvibe (you get the warning message indicating the presence of channels with different sampling rates). As a simpl...