Search found 40 matches
- Tue Jul 05, 2016 3:24 pm
- Forum: Scenarios and BCI design
- Topic: Recreate Region Based Speller
- Replies: 1
- Views: 3247
Re: Recreate Region Based Speller
Hi I believe that the P300 speller xDawn is a good start to implement the behavior you want. You can for instance create a Lua script to implement any flashing strategy and connect it to the P300 Visualisation box. The configuration file p300-speller-visualisation.cfg will allow you to modify the di...
- Thu Jun 30, 2016 10:00 am
- Forum: Acquisition server and drivers
- Topic: Sending External Stimulation
- Replies: 10
- Views: 14070
Re: Sending External Stimulation
Hi klaro, I think the problem you have is related to the fact that 'bytes' is different in python2 and python3. The example script was written for python 3. All you have to do is to replace bytes by bytearray. This should work for both python 2 and python 3. The example script will be changed accord...
- Thu Jun 23, 2016 1:10 pm
- Forum: Help for building the software
- Topic: help building open vibe
- Replies: 3
- Views: 10767
Re: help building open vibe
Hi, OpenVibe mainly supports 3 systems: Windows, Ubuntu and Fedora. It might work on other platforms but with more effort. If you want to avoid hacking to make it work on your system (which can be time-consuming and tedious), I recommend you to use one of the supported platforms (http://openvibe.inr...
- Tue Jun 21, 2016 1:35 pm
- Forum: Help for building the software
- Topic: help building open vibe
- Replies: 3
- Views: 10767
Re: help building open vibe
Hi Natacha
Could you please tell about the system on which you're trying to install OpenVibe ?
Cheers
Could you please tell about the system on which you're trying to install OpenVibe ?
Cheers
- Tue Jun 21, 2016 1:33 pm
- Forum: Designer
- Topic: How do I go for more than 2 to match brain wave data?
- Replies: 1
- Views: 3678
Re: How do I go for more than 2 to match brain wave data?
Could you please give more information about your setting ? What information do you intend to match ?
- Fri May 20, 2016 4:43 pm
- Forum: OpenViBE News
- Topic: OpenViBE v 1.2.0 is available (+ v1.2.1 + v1.2.2)
- Replies: 4
- Views: 21016
Re: OpenViBE v 1.2.0 is available
Release Notes / ChangeLog version 1.2.0 Tests: Added Shrinkage LDA tests to the build automation Demos: Updated the Motor Imagery scenarios to use TCP Tagging Build: Addressed Ogre/CEGUI Find problems on Fedora 21 Plugins: Fixed problem of xval setting placement in Classifier Trainer Applications: D...
- Fri May 20, 2016 4:24 pm
- Forum: OpenViBE News
- Topic: OpenViBE v 1.2.0 is available (+ v1.2.1 + v1.2.2)
- Replies: 4
- Views: 21016
OpenViBE v 1.2.0 is available (+ v1.2.1 + v1.2.2)
The OpenViBE development team is happy to announce the release of v1.2.0. You can find it here . Highlights OpenViBE 1.2.0 comes with many improvements of the general quality of the code base. New tests have been added to extend the code coverage and assess sensitive parts of the project such as tim...
- Wed May 18, 2016 6:14 pm
- Forum: Scenarios and BCI design
- Topic: How to change the classifiers of P300 and SSVEP scenarios?
- Replies: 2
- Views: 3539
Re: How to change the classifiers of P300 and SSVEP scenari
Hi, With the P300 speller, the processing pipeline includes an XDAWN spatial filter to enhance the classification with LDA. It may have less effect with other classifiers. When working with P300 ERP, the typical electrodes used are: Fz, Cz, C3, C4, Pz, P3, P4, P7, P8, Oz, O1, O2, but it can also wor...
- Tue Apr 19, 2016 8:44 am
- Forum: Discussion about OpenViBE
- Topic: Sending data out from OpenViBE to LABVIEW
- Replies: 2
- Views: 4447
Re: Sending data out from OpenViBE to LABVIEW
Hi
I suggest to send stimulations with the TCP writer box in OpenVibe and implement basic TCP/IP communication in your LabView program.
Best regards
I suggest to send stimulations with the TCP writer box in OpenVibe and implement basic TCP/IP communication in your LabView program.
Best regards
- Fri Apr 08, 2016 2:37 pm
- Forum: Designer
- Topic: Saving classifier output as trigger in the EEG file
- Replies: 3
- Views: 5729
Re: Saving classifier output as trigger in the EEG file
Hello,
As far as I understand you don't need hardware trigger nor software trigger. Your Matlab box simply needs to output a stimulation that you connect to your file writer box in the designer.
Hope this helps!
Best regards
As far as I understand you don't need hardware trigger nor software trigger. Your Matlab box simply needs to output a stimulation that you connect to your file writer box in the designer.
Hope this helps!
Best regards
- Tue Mar 15, 2016 1:30 pm
- Forum: Tutorial scenarios
- Topic: LDA classifier trainer
- Replies: 2
- Views: 11035
Re: LDA classifier trainer
Hi LDA in OpenVibe is multiclass, and classifies a vector X in class k = argmax_i { P(class=i | vector=X) } There is one set of weights associated to each class to compute P(class=i | vector=X). For more details: plugins/processing/classification/src/algorithms/ovpCAlgorithmClassifierLDA.cpp and plu...
- Wed Mar 02, 2016 10:03 am
- Forum: Scenarios and BCI design
- Topic: SSVEP-BCI Spatial Filter Box error
- Replies: 4
- Views: 7906
Re: SSVEP-BCI Spatial Filter Box error
Ok it seems that one of our recent changes screwed things up...
Thank you for reporting this issue!
FYI OpenVibe's bugtracker is hosted there: http://openvibe.inria.fr/tracker/my_view_page.php
Cheers
Thank you for reporting this issue!
FYI OpenVibe's bugtracker is hosted there: http://openvibe.inria.fr/tracker/my_view_page.php
Cheers
- Wed Mar 02, 2016 9:25 am
- Forum: Scenarios and BCI design
- Topic: P300 speller co-adapt with Emotiv Epoc - Not working
- Replies: 3
- Views: 5463
Re: P300 speller co-adapt with Emotiv Epoc - Not working
Hello The P300 Speller coadapt relies on shared memory tagging to send event markers. We have noticed a time drift of the tagging, which degrades the performances of the classifier over time. We are about to release a new version of the P300 Speller which corrects this issue. In the meantime I recom...
- Tue Feb 23, 2016 4:06 pm
- Forum: Scenarios and BCI design
- Topic: SSVEP-BCI Spatial Filter Box error
- Replies: 4
- Views: 7906
Re: SSVEP-BCI Spatial Filter Box error
Hello These error messages occur when the dimensions of the filter are inconsistent with the number of channels (number of coefficients should be equal to number of input channels * number of output channels) I'm not sure why you get this problem, but this might be due to an irrelevant filter parame...
- Tue Feb 02, 2016 11:29 am
- Forum: Scenarios and BCI design
- Topic: Problem running p300 with Emotiv
- Replies: 1
- Views: 3023
Re: Problem running p300 with Emotiv
Hi
Could you please describe more the problem you get when connecting the Emotiv headset to the acquisition server? Do you get an error message in the logs?
Thanks
Could you please describe more the problem you get when connecting the Emotiv headset to the acquisition server? Do you get an error message in the logs?
Thanks