[Mne_analysis] a junior question on mne_setup_source_space

[Alexandre Gramfort]

>> yes it's not really meant to be visualized. I can send you script used
>> to make the figure on the frontiers paper if you want.
>
> Thanks, it will help.

https://gist.github.com/agramfort/9772976

>> > 2. I tried the example in the script you provided (watershed), error
>> Try
>>
>> mne make_scalp_surfaces
>>
>> if you have mne python installed correctly.
>>
>> but it's just for visualization not computation.
>
> OK, I will double check my Matlab routes and try Python if it still doesn't
> work.
>>
>>
>> > 3. If my data are MEG instead of EEG, do I still need to use this skin,
>> > skull, brain segmentations from watershed or mne_setup_source_space on
>> > brain
>> > surfaces is already sufficient?
>>
>> you need the inner skull. This command should do the job:
>>
>> mne_setup_forward_model --homog --surf --ico 4
>
> Does that mean I will set my source space on inner skull? Would you think it
> better on the surface of white matter better or practically no much
> difference?

there is 2 different and independent things here:
- source space
- surfaces for forward model

skull is for the forward model and has nothing to do with the source space.

HTH
A