Average Reference for Source Stimation

[tourette95]

Hi everybody!
I was reading the discuss about average reference in soruce stimation, and now I have a question:

Does Brainstorm software force my eeg to average reference in order to compute sources, or I need to do it before the computation?

If I need to change the recording’s reference to average, in wich step should it be done? before compute noise covariance? Before any step?

Thanks in advance

[Francois]

Brainstorm forces your recordings to an average reference before source estimation, you don't have to do it explicitly.
For details, refer to this thread:

Reference of the gain matrix - EEG OPENMEEG BEM in Brainstorm

Hi Rasheeda, The models in Brainstorm convert all the EEG/ECOG/sEEG recordings to an average reference, you don’t need to do it explicitly. If you do want to apply an average reference montage to your recordings, use the process “Standardize > Apply montage”. To learn how to use the new montage interface, please read the EEG/Epilepsy tutorial. For questions on OpenMEEG, please contact the OpenMEEG developers: http://openmeeg.github.io/ Cheers, Francois

[tourette95]

Thank you!
I didn’t want to write another thing but post system demands me to write at least 20 character in order to submit my post