******** Changes to the TT_avg152T1 Template ********

The TT_avg152 (but not TT_N27 or TT_icbm452) template distributed was
mistakenly left in MNI, instead of Talairach space. As a result, atlas-based
queries would be off by a few millimeters, mostly in the inferior to superior
direction. The localization error is on the order of a couple of millimeters in
most of the brain. The error is largest (about 4mm) at the very top or very
bottom of the cerebrum.

If you have automatic updates of afni, the new version (in TLRC space) of the
template should have replaced the old one in your afni bin directory. Otherwise,
you'll need to download the latest binaries archive from
[afni.nimh.nih.gov] .
For backward compatibility, the old template (in MNI space) is also provided
under the new name MNI_avg152T1+tlrc. If you download the templates individually
from the same link as above, you'll need to do so again at this moment. The script
@auto_tlrc will check for template version and will require that you install the
new ones.


To assess the effect of this template change on your results, the program
whereami has been modified to accept coordinates in MNI space. To get the
corrected report for a coordinate location from the old TT_avg152 template add
the option -space MNI.

For example, say you had a cluster center close to the top of the brain at
-12,-26, 76 (LPI) with the old template. whereami, assuming the coordinates are
in Talairach space, would report:

> whereami -12 -26 76 -lpi
> Focus point (LPI)=
-12 mm [L], -26 mm [P], 76 mm [S] {T-T Atlas}

Atlas CA_N27_MPM: Cytoarch. Max. Prob. Maps (N27)
Within 4 mm: Area 6
Within 7 mm: Area 4a

Atlas CA_N27_ML: Macro Labels (N27)
Within 1 mm: Left Paracentral Lobule
Within 6 mm: Left Precentral Gyrus
-AND- Left Postcentral Gyrus

However, since the old template was in MNI space, the location in Talairach
space is slightly lower. The correct report can be obtained by specifying the
correct coordinates' space:

> whereami -12 -26 76 -lpi -space MNI
> Focus point (LPI)=
-12 mm [L], -22 mm [P], 71 mm [S] {T-T Atlas}

Atlas TT_Daemon: Talairach-Tournoux Atlas
Within 4 mm: Left Precentral Gyrus
Within 6 mm: Left Medial Frontal Gyrus
-AND- Left Brodmann area 6
-AND- Left Brodmann area 4

Atlas CA_N27_MPM: Cytoarch. Max. Prob. Maps (N27)
Within 1 mm: Area 6

Atlas CA_N27_ML: Macro Labels (N27)
Focus point: Left Paracentral Lobule
Within 3 mm: Left Precentral Gyrus
Within 5 mm: Left SMA
Within 6 mm: Left Superior Frontal Gyrus

Volumes that have already been transformed with the old template can be put
in TLRC space using 3dWarp -mni2tta .

Also, TT_avg152EPI is now replaced by TT_EPI, which is a version of SPM's EPI
template in Talairach space.

Thanks go to Giuseppe Pagnoni for discovering the problem.

This message can also be found here:
[afni.nimh.nih.gov]