mistake in ECoG tutorial

Hello,

In this tutorial: https://mne.tools/stable/auto_tutorials/clinical/30_ecog.html

it is said: “We can project gamma power from the sensor data to the nearest locations on the pial surface and visualize that:”

However, to my understanding:

src = mne.read_source_spaces(
    op.join(subjects_dir, 'fsaverage', 'bem', 'fsaverage-ico-5-src.fif'))

reads out sources located on the white matter surface, not the pial surface.

If we want sources on the pial surface, I believe one should first do:

src = mne.setup_source_space('fsaverage', subjects_dir=subjects_dir,
                              spacing='ico5', surface='pial')

Indeed,

src = mne.read_source_spaces(
    op.join(subjects_dir, 'fsaverage', 'bem', 'fsaverage-ico-5-src.fif'))

and

src = mne.setup_source_space('fsaverage', subjects_dir=subjects_dir,
                              spacing='ico5', surface='white')

give the same result.

[agramfort]

indeed ! either we fix the text or we fix the code

@alexrockhill wdyt?

[chapochn]

Thanks @alexrockhill and @larsoner!