[Mne_analysis] customizing the source space

[Jeff Eriksen]

I worked a bit learning MNE last Oct-Nov, then had to do other things for a
while. Now I am diving back into MNE, trying to relearn what I did last
fall. One new area I am curious about is how to make a customized source
space. Reading the V2.9 Dec 2007 manual sections 3.5 and 5.4 it seems one
can use the "traditional" or "icosahedral" methods. The latter is clear to
me, but the "traditional" method is not ­ what do you mean by traditional
method here?

What I really want is to be able to pre-specify functional areas and use
them as the basic elements of the source space. We are considering
functional networks defined by fMRI experiments, but for the sake of
argument we can here consider Brodmann areas. Can you imagine or suggest a
way that I could use an individual subject's Brodmann areas as the source
space? At one extreme would be assigning a single dipole to each Brodman
area in one hemisphere. At the other would be to model each Brodmann area as
a set of adjacent dipoles uniformly covering it, but linked as a unit.

Thanks,
-Jeff



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