[Mne_analysis] source localizing frequency bands

[Gustavo Sudre]

Hello,

I have a generic question about source localization. From what I've  
seen so far, when the goal is to localize the activity in certain  
frequency bands, it's common to use methods such as DICS or the  
variant of MCE for frequency bands. I was wondering if it is also  
correct to do source localization using a different method (e.g. MNE)  
with the whole signal (i.e. prior to band-pass filtering to specific  
bands) and then convert the signal in the localized sources to  
frequency domain. Another alternative would be to band-pass the signal  
to a certain frequency band in source space, and then run a different  
source localization method on it (e.g. MNE).

Could anyone elaborate on the advantages / disadvantages ( / validity)  
of these two methods?

Thank you,

Gus