Anatomical templates for visualizing source reconstructed activity
When visualizing source reconstructed activity, one can interpolate the activity maps onto a subject-specific anatomical image, using ft_sourceinterpolate. Subsequently, the interpolated activity can be spatially normalized (using volumetric normalization) using ft_volumenormalise. The activity can also be rendered onto the cortical surface. FieldTrip includes a set of template surfaces that have been derived from the Colin27 brain (in MNI152 space) with Freesurfer. These surfaces have been derived from the SPM Canonical Brain.
High resolution triangulations of the neocortical sheet
- surface defined at the gray/white matter boundary: surface_white_both/left/right.
- surface defined at the pial surface: surface_pial_both/left/right.
- inflated surface: surface_inflated_both/left/right.
- inflated surface generated with Caret (added May 26, 2014 using the command caret_command -surface-generate-inflated), preserving the main sulcal structure: surface_inflate_both/left/right_caret.
Volumetric anatomical image at 1mm isotropic resolution
The volumetric image fieldtrip/template/anatomy/single_subj_T1_1mm.nii is the colin27 brain at 1 mm resolution downloaded from the web: http://www.bic.mni.mcgill.ca/ServicesAtlases/Colin27.