[Mne_analysis] Visualizing power spectrum density of sources on the brain

[Alexandre Gramfort]

> Could anyone explain why MNE should be used instead of dSPM to get the power
> plots? The tutorial on the MNE website says to use dSPM as the solver.

dSPM is just a normalized/scaled version of MNE (scaling is obtained
form the noise standard deviation derived from the noise cov). So
basically it's just a scaling factor. If you apply a baseline /
contrast with a log ratio of power then there is no diff between the
2.

HTH
Alex