OpenViBE forum

Can I use Python scripting box with different version of Python?
Is my one and only option the Python 3.7.8 on Windows 10? Or can I use any other different version?

I am trying to train a classifier that will detect left and right hand movement. I successfully create the .cfg file for each user. What I would like to achieve is to create a more general model (.cfg file) that will generally work for all users using MI. Is such a thing possible? If not why? If yes...

Does anyone know where I can find the video recording of the 4th International OpenViBE workshop held on September 11, 2021 ?
Link: http://openvibe.inria.fr/the-4th-intern ... -workshop/

Thanks in advance.

How can I add a 3rd class of Resting state? I want to train my classifier recognizing left-right hand movement and resting state if the user don't trying to imagine anything.

How can training scenario knows if the user predict the right class in Motor Imagery? The .ov file in Motor Imagery saves if the trial arrow was LEFT or Right to predict the accuracy in the training scenario?

Hello, When i run this scenario at the end i take Accuracy = 0.0? Why is this happening and why generated confusion matrix in the acquisition phase? RESULTS: [ INF ] At time 430.594 sec <Box algorithm:: (0x02e67945, Ox5ea8d309) aka Classifier trainer> Finished with partition 6 / 7 (performance : 26....

I am creating an application in Unity that will be controlled with MI. I use LSL to send the markers into Unity and I face the following problem: In motor-imagery-bci-3-online.xml when I place the LSL in the acquisition client box I get the markers for the appearance of the cross, beginning of the t...

Thanks for the answer. Last thing and I may state the obvious, but checking the electrodes are well positioned and making sure the mapping in OpenViBE is correct. Do you mean if the electrodes are in the right position on the scalp? Also you mean OpenViBE Acquisition Sever / (OpenBCI) Driver Propert...

I'm trying to train the classifier for MI but the accuracy results I get are very bad. I'm using Channel Selector Box with channels: (C3; C4; P3; P4; T3; T4; F3; F4) and Surface Laplacian Box with coefficients: (4; 0; -1; 0; -1; 0; -1; 0; 0; 4; 0; -1; 0; -1; 0; -1), 8 inputs and 2 outputs, Temporal ...

Thomas thanks for your response. You mention this: Here, the results are not great. Target 1: 43.9 56.1% -> means that 43.9% of feature vector for Target 1 were actually predicted as target 1. Target 2: 54.1 45.9% -> means that 45.9% of feature vector for Target 2 were actually predicted as target 2...

Hello all, I trained my classifier with left and right hand movement (Not fantasy but real movement) and Ι got the results below. Can anyone explain to me what this results means? When I ran the motor-imagery-bci-3-online.xml file the accuracy was poor. Thank you in Advance! Results: [ INF ] At time...

Thomas thanks for your response.

What are these 3 accelerometer channels and what are their use?

I don't think I have something like this in OpenBCI device. I have only 2 earclips and my 8 or 16 electrode channels.

What should I put as accelerometer channels?

Thanks,
M.

I m not sure if I understand. Lets say I set indexes in OpenVibe : 1, 2, 3, 4, 5, 6, 7, 8 respectively -> O1, O2, P7, P8, C3, C4, FP1, FP2 I need to Connect the cable of O1 electrode on the N1P pin and O2 electrode on the N2P pin on the OpenBCI ganglion board and etc.? If I connect the O1 electrode ...

Hello all, I have 2 questions. How does OpenVibe recognize which channel comes from a specific sensor on the OpenBCI device? Logically I have to adjust it somehow. I have OpenBCI device and I m trying to run MI example. The box Reference channel must be removed because there are ear-clips as referen...

Hello all, I have a couple of questions. How does OpenVibe recognize which channel comes from a specific sensor on the OpenBCI device? Logically I have to adjust it somehow. I have OpenBCI device and I m trying to run MI example. The box Reference channel must be removed because there are ear-clips ...