Neither MNI nor Talairach space is not one specific space, but each corresponds to a kind of family of spaces. MNI has about a dozen popular variants. The Desai atlases were made using AFNI’s @auto_tlrc function by alignment to the TT_N27 space. Consequently, the atlas is the TT_N27 variant of Talairach space.
Consider the following options to transform data or coordinates between MNI and Talairach spaces :
- Affine, 2-piece affine and 12-piece affine transformations to go from generic Talairach to generic MNI.
https://afni.nimh.nih.gov/afni/community/board/read.php?1,157350,157357#msg-157357
https://afni.nimh.nih.gov/afni/community/board/read.php?1,75269,75394#msg-75394 - 12-piece affine to go from TT_N27 to MNI_N27, and MNI_N27 to TT_N27.
https://afni.nimh.nih.gov/afni/community/board/read.php?1,164385,164470#msg-164470
https://afni.nimh.nih.gov/afni/community/board/read.php?1,157350,157357#msg-157357 (same as in #1) - Affine+nonlinear warp to go from TT_N27 to MNI_2009c
https://afni.nimh.nih.gov/pub/dist/atlases/MNI_Desai/ - Use FreeSurfer parcellations for MNI_2009c instead of Desai atlases. See aparc+aseg+REN_all.nii.gz in compressed file below.
https://afni.nimh.nih.gov/pub/dist/tgz/suma_MNI152_2009.tgz