I am new to MNE. Can you just indicate whether I can use
mne_volume_source_space to generate a cortical ribbon volume constrained
source space (as opposed to constrained to cortical surface). In that case,
is it ?h.white the inner boundary surface that I have to use as argument?
I am interested in getting both hemispheres, of course.
Please advise, thank you very much,
mne_volume_source_space can only create a volumetric grid inside one boundary surface, not one between two surfaces. Why would you like a *volume* source space on the cortical mantle, which is essentially a surface?
I am working with an ecog based BEM and need to define the source space.
You are right, the differences between the cortical ribbon and surface are
small. What I want to do in the end is to create a source space consisting
of a denser grid for the cortical ribbon (or surface, as you pointed out),
and sparser (reduced, kind of adaptive) for the rest of the brain volume
(deep nuclei, wm).
Can this be done, such as running the mne_volume_source_space twice, with
boundaries, say ?h.pial, and ?h.white with denser and sparser grid,
respectively, then removing the inner source layer generated with ?h.pial?
Alternatively, do you see combining the output of the mne_make_source_space
with pial surfaces (dense), and the mne_volume_source_space with ?h.white
(sparse)?
Another related question, do I have to combine the lh and rh boundary
surfaces (such as pial or white) when using mne_volume_source_space, or do
I run the command twice for each side?
Thank you very much,