[Mne_analysis] Welch PSD in source space

Denis-Alexander Engemann denis.engemann at gmail.com
Mon Nov 7 10:11:32 EST 2016
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No only for the Fourier coefficients is valid once you compute the power
it's non-linear.

Use apply_inverse_epochs and do a welch on the output with the private
function and accumulate the result.

That's anyways what I will do.

On Mon, Nov 7, 2016 at 4:09 PM Laetitia Grabot <laetitia.grabot at gmail.com>
wrote:

> Yes, I'ld be happy to use your code. I was also thinking about source
> reconstructing PSD computed on the epochs, do you think it is valid?
>
> 2016-11-07 16:03 GMT+01:00 Denis-Alexander Engemann <
> denis.engemann at gmail.com>:
>
> Hi Laetitia I would simply source localize epochs and compute the Welch on
> the output. I happen to write some code for this right now, I'm happy to
> share it with you. We can then make a PR to MNE. Currently the API there
> does not seam to support this yet.
> Denis
>
> On Mon, Nov 7, 2016 at 3:55 PM Laetitia Grabot <laetitia.grabot at gmail.com>
> wrote:
>
> Dear MNE-users,
>
> I would like to compute PSD in source space using Welch's method. I did
> not find how to do it with the currently implemented functions:
> - compute_source_psd is doing it but from raw file, yet I'ld like to
> perform the analysis only on some parts of epochs,
> - compute_source_psd_epochs is using multitaper,
> - psd_welch had epochs/evoked instances as argument and not source data
>
> How could I do it?
>
> Thanks a lot,
> Best,
> Laetitia G.
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