[FieldTrip] anatomical labelling of dipole positions

[Tom Marshall]

Hi Trippers,

I have performed dipole fitting on some data and I would like to 
identify the anatomical regions in which various dipoles are located - 
ie, to make statements of the sort, 'dipole X was (best) localised to 
the right superior parietal cortex'. Specifically - I have the output 
from ft_dipolefitting which gives positions in the head space of the 
individual subjects, and I would like to anatomically label the dipoles 
according to the AAL atlas, which is based on the MNI template brain.

I *think* what I will need to do is apply some warping of the subject 
MRI to the MNI template, and then apply the same warping to the dipole 
co-ordinate. However it is not clear to me how to warp a single point, 
rather than an entire volume. Is there some fieldtrip function that 
could be used for this?

I do not think the approach detailed in 
/<http://fieldtrip.fcdonders.nl/example/create_single-subject_grids_in_individual_head_space_that_are_all_aligned_in_mni_space>/ 
will be much use here, since (if I understand correctly) the MNI-aligned 
grid created here would only be used as a starting point for 
ft_dipolefitting. In the end a given dipole might not correspond to any 
grid point.

Can anybody advise me on how to set about this?

Thanks a lot.

Best,
Tom
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