OpenViBE forum

Hi,
I'm afraid there is no other solution that clicking on the kbd-stim window to receive keyboard inputs in the running scenario. This is due to how the keyboard stims were originally designed.
Best regards

Hi Synchronizing OpenVibe with an external application is not an easy task... Triggers allows to insert event markers into the signal and are commonly used to synchronize OpenVibe with external applications. However it is not always easy to have accurate triggers. Hardware tagging provides the most ...

Hi Brendan,
You might want to have a look at OpenVibe's website that provides examples of scenarios using classifiers.
http://openvibe.inria.fr/documentation- ... umentation
http://openvibe.inria.fr/motor-imagery-bci/

Best regards

Hello
The computation of the coefficients of these filters is implemented in openvibe/contrib/plugins/processing/signal-processing/src/algorithms/ovpCComputeTemporalFilterCoefficients.cpp
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Hello,
On this webpage http://openvibe.inria.fr/start/ you'll find introduction videos to OpenVibe.
On this webpage http://openvibe.inria.fr/documentation-index/ you'll find General instructions, User documentation, and tutorials.
Best regards

Hi, You might want to have a look to some tutorials available on OpenVibe website: http://openvibe.inria.fr/motor-imagery-bci/ http://openvibe.inria.fr/motor-imagery-bci-with-common-spatial-pattern-filter/ http://openvibe.inria.fr/handball-demonstrator/ OpenVibe also comes with scenario examples tha...

Hi Aline, In the Lua Stimulator you can modify the Lua script. The way to send stimulations is as follows: box:send_stimulation(1, OVTK_StimulationId_ExperimentStart, t, 0) You can replace this stimulation by any other stimulation code from this page: http://openvibe.inria.fr/stimulation-codes/ Also...

Hi,
Yes indeed, the column Electrode contains the values from the acquisition.
Best regards

Hi Aline,
You might want to have a look at this scenario tutorial classification-0-training.xml in share/openvibe/scenarios/box-tutorials.
This will give you an example about how to use the classifier trainer.
Best regards

Hi, You might want to have a look at and get inspiration from the scenario neurofeedback.xml located in dist/share/openvibe/scenarios/bci-examples/neurofeedback. This scenario shows how the get the beta power from brain signals. For communication with external applications, I suggest you to look at ...

Hi, The format for raw signal output from the TCP Writer Box is described in the box documentation: http://openvibe.inria.fr/documentation/1.0.1/Doc_BoxAlgorithm_TCPWriter.html You will also find a client example in openvibe/applications/examples/openvibe-to-tcpip/src/tcpip-client.cpp that shows how...

Regarding the Amplitude input in the Graz vizualisation: it is used to display a feedback to the subject. See the scenario mi-csp-4-online.xml to see how it is used.

Best regards

Hi

Regarding the sound: the box "Graz vizualisation" no longer produces sounds. You need to use the Sound Player box (http://openvibe.inria.fr/documentation/ ... layer.html) to this end.

Best regards

Hi Sabeel Akhras,

I suggest you to have a look at this tutorial explaining how to use Matlab in OpenVibe:
http://openvibe.inria.fr/tutorial-using ... -openvibe/

I believe that after following this tutorial you'll be able to implement what you need.

Best regards

Hi

Please note that since the ratio between the P300 class and non-P300 class is 1:5, an accuracy of 80% indicates a bad accuracy, close to pure randomness.
This might explain your problem in online sessions.

Best regards