Normalize the channels before CSP?

mne-tools / mne-python

MNE: Magnetoencephalography (MEG) and Electroencephalography (EEG) in Python

https://mne.tools

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Normalize the channels before CSP? #8097

Open KarnBaca opened 4 years ago

KarnBaca commented 4 years ago

I have seen several examples where the normalization of channels before CSP is skipped but according to the reference [2] this step is part of the general framework.

Does the mne.compute covariance function take care of the data normalization or should I take care of it before to fit CSP?

Thanks!

agramfort commented 4 years ago

no it's not done by cov function as otherwise it would compute correlation matrices (not covariances).