[FieldTrip] using AAL atlas on sourcemodel

[Raghavan Gopalakrishnan]

Hi all,

I am trying to use AAL atlas on cortical mesh generated for individual
subjects using freesurfer.

When I do it on standard (template) sourcemodel, it works fine.

aal = ft_read_atlas(
'/Users/gopalar/Documents/MATLAB/fieldtrip-20140430/template/atlas/aal/ROI_MNI_V4.nii'
);

sourcemodel=ft_read_headshape('cortex_8196.surf.gii');

sourcemodel2=ft_sourceinterpolate(cfg,atlas,sourcemodel);
sourcemodel2.tissue has all the parcellations numbered and indexed.

when sourcemodel was generated for individual subjects, the above steps
does not work well. ft_sourceinterpolate do not yield all parcellations and
they are anatomically skewed. I guess some co-registration of individual
cortical mesh with standard template needed. Or are grids are the only
other option. I really would like to use the cortical mesh instead of grids
in my analysis.

Thanks for your help

Raghavan




-- 
*Raghavan Gopalakrishnan,*
*Principal Research Engineer, *
*Cleveland Clinic*
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