Compute PSD using source estimate and Beamformer

:question: If you have a question or issue with MNE-Python, please include the following info:

  • MNE version: 1.0.0
  • Ubuntu 18.04

I would like to know if it was possible to calculate the power spectral density after calculating the signal for the different sources. Indeed I used the Beamformer method to calculate the different sources, and it seems that the Welch method to calculate the PSD is implemented only in the case where we have the inverse operator.
This does not seem to be the case when using LCMV beamformer.
Thank you and have a nice day!

Hello @gulach and welcome to the forum!

I personally cannot help you there, but I’m summoning @britta-wstnr, our beamforming expert, who might have an idea!

Best wishes,


sorry for my late reply - I was out of office.
If you want to have power estimates in source space, you could consider using a DICS instead of LCMV beamformer, which gives you frequency-resolved estimates.
You can find an example for that here: Compute source power using DICS beamformer — MNE 1.0.3 documentation

Hope this helps,

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