Search found 264 matches

by Thibaut
Tue May 18, 2021 1:33 pm
Forum: Designer
Topic: Computing alpha power
Replies: 6
Views: 7803

Re: Computing alpha power

HI, You have the time based epoching, he make an epoch of your duration and if the interval is inferior of duration you avec a moving windows as you wan't. Thibaut PS : in your image it's better to make channel selector before temporal filter (to avoid apply temporal filter on all channel before sel...
by Thibaut
Mon Apr 19, 2021 10:00 am
Forum: Scenarios and BCI design
Topic: Clarification for output format - epochs
Replies: 5
Views: 13084

Re: Clarification for output format - epochs

Hello,
I just saw your files, I think you are receiving the stimulation from your EEG file while the epoch is not yet finished (received after 0.3s while the epoch duration is 0.6). Use a listener stimulation at the exit of your file to see if the stimulations are correctly "timed".
Thibaut
by Thibaut
Fri Apr 16, 2021 9:05 am
Forum: Scenarios and BCI design
Topic: Clarification for output format - epochs
Replies: 5
Views: 13084

Re: Clarification for output format - epochs

HI,
Can you link the scenario and the CSV file.
I'm not sure to understand
Thibaut
by Thibaut
Tue Apr 13, 2021 9:37 am
Forum: Scenarios and BCI design
Topic: Clarification for output format - epochs
Replies: 5
Views: 13084

Re: Clarification for output format - epochs

Hi, I'm not sure to understand all with the fragment of csv in example. For CSV Output you have column to help you but I can add informations, You have epochs but an epoch is not only an exact T time but for example a bloc of 1s and if you avec a 250Hz signal during one second you have 250 T time so...
by Thibaut
Tue Apr 13, 2021 9:23 am
Forum: Designer
Topic: Invoke Python Classifiers from OpenVibe
Replies: 1
Views: 6573

Re: Invoke Python Classifiers from OpenVibe

HI,
With the OV version 3.0.0 you have in contrib pybox boxes wich use sklearn classifier.
Thibaut
by Thibaut
Tue Apr 13, 2021 9:21 am
Forum: Discussion about BCI and related topics
Topic: A question about the “Epoch averaging” in BCI P300
Replies: 2
Views: 6646

Re: A question about the “Epoch averaging” in BCI P300

Hi, 1) 250Hz is 250 per seconds so 4ms is right. 3) I don't understand your parameter... Epoch average is here to set an epoch and an epoch with a time of 0 is not an epoch it's a classical sample, so you take only the sample by channel after 0.4s of your stimulation. If you wan't to take all the 0....
by Thibaut
Tue Apr 13, 2021 9:10 am
Forum: Acquisition server and drivers
Topic: Acquisition server and LSL with 2 different PC
Replies: 4
Views: 8013

Re: Acquisition server and LSL with 2 different PC

Hi, My First question is why 2 computer ? Basically if you need 2 computer because of computes power. One of them can have all acquisition (EEG and Marker) and the second the process. If it's impossible, To minimize ethernet communication your configuration with EEG and process in one computer and t...
by Thibaut
Mon Mar 29, 2021 1:42 pm
Forum: Scenarios and BCI design
Topic: motor-imagery-bci-1-acquisition.xml
Replies: 7
Views: 8213

Re: motor-imagery-bci-1-acquisition.xml

HI,
I have down some hello world game with Unity
See : viewtopic.php?p=16495#p16495
viewtopic.php?p=16511#p16511
Thibaut
by Thibaut
Mon Mar 29, 2021 8:50 am
Forum: Discussion about OpenViBE
Topic: OpenVibe stop giving signal / timeout for OpenBCI hardware
Replies: 1
Views: 6041

Re: OpenVibe stop giving signal / timeout for OpenBCI hardware

Hi, If I understand weel, Your hardware shutdown (or other problem) the acquisition server is not perturbated by that and show a flat signal. The scenario doesn't recognize a timeout. For me it's normal you have a signal (wrong but present). If it is exceptional, I would take the part of letting the...
by Thibaut
Mon Mar 29, 2021 8:42 am
Forum: Scenarios and BCI design
Topic: motor-imagery-bci-1-acquisition.xml
Replies: 7
Views: 8213

Re: motor-imagery-bci-1-acquisition.xml

HI,
The acquisition scenario is used for..... acquisition^^, you train your classifier with the next scenario : train. An example eeg file is already set in this scenario
Thibaut
by Thibaut
Thu Mar 25, 2021 2:24 pm
Forum: Acquisition server and drivers
Topic: TCP TAGGING
Replies: 15
Views: 24498

Re: TCP TAGGING

Hi,
For the next release we don't have an exact date yet sorry^^
Thibaut
by Thibaut
Thu Mar 25, 2021 2:22 pm
Forum: Box and application development
Topic: Vertical Feedback Bar Graz Visualisation
Replies: 1
Views: 6253

Re: Vertical Feedback Bar Graz Visualisation

HI,
I haven't reed your complete message but since OpenViBE 3.0.0. I have added a box multimodal graz (a display with vertical bar and N class not fixed by 2). Maybe you can use it or you can see the code of this for your formula.
Thibaut
by Thibaut
Thu Mar 25, 2021 2:20 pm
Forum: Scenarios and BCI design
Topic: Displaying the CSP filter/pattern
Replies: 1
Views: 6062

Re: Displaying the CSP filter/pattern

Hello, To simplify the CSP allows to create a matrix which makes it possible to pass from a space of N dimension to M by maximizing the differences. The result following this matrix is a space of M fictitious electrodes from your N real electrodes. It is difficult in my opinion to just say these are...
by Thibaut
Mon Mar 22, 2021 10:27 am
Forum: Acquisition server and drivers
Topic: TCP TAGGING
Replies: 15
Views: 24498

Re: TCP TAGGING

Hi,
Now it's on development branch
THibaut
by Thibaut
Fri Mar 05, 2021 4:22 pm
Forum: Help for building the software
Topic: How and where is the build after Visual Studio 2013 Community building success
Replies: 1
Views: 6131

Re: How and where is the build after Visual Studio 2013 Community building success

HI,
You have to rerun the script build.cmd the build in visual studio is not the same (it's boring but soon changed)
Thibaut