[Mne_analysis] Single trial output from TF-MxNE via MVAR regression?

[Alexandre Gramfort]

hi Per,

>     I tried this without success, but let me revisit my efforts and get back to you. Even if this is a scaling issue, the solution with gradiometers-only should be successful(?). (If you can see the figures I uploaded, one is the successful "magnetometers-only" regression, and the other the unsuccessful "gradiometers-only".)

yes it should. As your example does not run on the MNE sample dataset I cannot
really reproduce.

>     In the meantime, if I could validate my primary assumption with you: that the relationship between the neural sources and the sensor measurements is fixed and linear (as long as the subject doesn't move in the scanner). This should apply for both magnetometers and gradiometers.

yes via the forward operator.

> I also assume that none of the preprocessing steps (whitening, scaling) are strictly necessary to maintain this?

if whatever you apply to the data (whitening, scaling) you apply it
too to the forward matrix yes you're good.

Alex