OpenViBE forum

Hi,

Before trying the impossible, I just want to check with you experts, is it possible to use 2 matlab boxes, in a a que, meaning that after one is done it's sends a stimulation to the second box and only than the second one starts the initialization followed by the process part?

Many thanks,
Yael

Hi Everyone, I am trying to connect to the driver "Brain product amplifiers [through brain vision recorder]", and I've encountered a few issues: 1. When connecting to port 51244 which is the port of the recorder and I've checked that is active, I receives an header error "First message received is n...

Dear Thibaut and Jussi, I really need your help and guidance in connecting the Openvibe with the brain product recview software. the reason I need it is to use the openvibe in an MRI environment. I've downloaded the RDAServer.dll file from the BCI2000 kit, and built the filter tree as bellow. Yet I ...

Hi, I want to use the openvibe in MRI environment, therefore I am trying to connect to the openvibe with Recview software (brain product). I've downloaded the RDA dll file that was designed forBCI2000 but suppose to work for openvibe as well, yet I don't know how to make the acquisition work with th...

Thanks, So just to make sure the problem is in the names, meaning that if I wanted channel 6- C4 - it did record this channel and this electrode and not channel 4 (F4) like written in the Channels names. The Openvibe acquisition can't change the specification of the cap right?

Many thanks,
Yael

Dear Jussi, I am using the brain product MR device with the 32 cap (BC-MR-32). According to the caps coordinates, channels 6 is C4 (for example). In the Openvibe designer I choose via the channel selector box channels (6;11-14;16;29-30) which correspond to (C4,F7,F8,T7,T8,P8,TP9,TP10) according to t...

Dear Jussi, I'm happy to say that I've manged to conduct my first experiment with Openvibe so many thanks for all your help. Now I am trying to make the procedure more user friendly and I do have some issues that require your assistance: 1. My procedure is build from several programs in the designer...

Thanks, I think I know why, the Epoch in the CSV file was set to 49 in a batch instead of 50.

Thanks again,
Yael

Hi,

When using clock frequency of 50Hz in the Matlab scripting box, the nb samples per buffer is 49, why is that?

Many thanks,
Yael

Thanks, I did transfer the box_in to the next function and retrieved it, this is how I solved the problem, as I said stupid mistake, that took me a whole day.

Thanks again,
Yael

Thanks for all your help, I've figured it out, stupid mistake.

Thanks again,
Yael

Hi, thanks, now I know what is the problem I am calling another function from the process function. the function is located just bellow in the process function code. I thought that the user data variables are global, do you have any idea how can I call them without doing upload of the file? can I de...

Thanks Jussi, sorry on the delay, we had many holidays and vacation time :) I managed to fix the problem by deleting this line from the code: box_in = OV_addOutputBuffer(box_in,1,start_time,end_time,matrix_data); I don't know why but it works perfectly without it. The only problem I have now is when...

Hi,

So when I attach my code onto tutorial 2 code it works, but when I delete the parts of the tutorial that I don't need the system crash again. meaning the openvibe designer shutdown.

please what am I doing wrong?

Many thanks,
Yael

Hi, I've seriously tried everything, yet I can't figure out what is the problem. The matlab tutorials works fine, that means that there is no problem with the matlab engine calling, yet when I try to write a basic scenario the whole system crash. Please help. here are the matlab code (since I can't ...