[Mne_analysis] Correspondence of sources with parcellation

[thierry nieus]

        External Email - Use Caution        

Hi Mina,
thank you very much for the code.
I was getting closer to the solution but your help was quite appreciated!
Best
Thierry

On Fri, Aug 30, 2019 at 11:27 AM Mina Jamshidi <jamshidi at cbs.mpg.de> wrote:

>         External Email - Use Caution
>
> Hi Thierry,
>
> I use this function:
>
> def label2idx(src, label):
>     """
>     finding the vertex numbers corresponding to vertices in parcel
> specified in label
>     :param src: source spaces
>     :param label: label object of the desired parcel
>     :return: parc_idx: indexes of the vertices in label,
>              parc_hemi_idx: indexes of the vertices in label, but in the
> corresponding hemisphere
>     """
>     offset = src[0]['vertno'].shape[0]
>     this_hemi = 0 if (label.hemi == 'lh') else 1
>     idx = np.intersect1d(label.vertices, src[this_hemi]['vertno'])
>     parc_hemi_idx = np.searchsorted(src[this_hemi]['vertno'], idx)
>     parc_idx = parc_hemi_idx + offset * this_hemi
>     return parc_idx, parc_hemi_idx
>
> Best,
> Mina
>
> ----- Original Message -----
> From: "thierry nieus" <thierry.nieus at unimi.it>
> To: "Discussion and support forum for the users of MNE Software" <
> mne_analysis at nmr.mgh.harvard.edu>
> Sent: Thursday, August 29, 2019 6:06:45 PM
> Subject: [Mne_analysis] Correspondence of sources with parcellation
>
> External Email - Use Caution
>
>
> Dear MNE community,
> I would like to determine the correspondence between the sources of a
> forward model (say fsaverage, ico 4 5124 sources) and the labels of a
> parcellation (say aparc). I found some nice examples on MNE website in
> which the activity of the sources are averaged over a given label (
> Generate a functional label from source estimates ) but I am actually
> looking for something simpler (for a given parcellation find the
> corresponding indexes of the sources).
> I believe it should be feasible.
> Any ideas?
> Thanks in advance
> Thierry
>
>
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Department of Biomedical and Clinical Sciences "Luigi Sacco"
University of Milan
Phone: +39 02 503 19731
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