Hello,
I am having an issue with a discrepancy between talairach coordinates I plug into tkmedit tool bar, and what gets displayed when I generate a time course for this voxel.
FREESURFER_HOME: /usr/local/freesurfer/stable4
Build stamp: freesurfer-Linux-centos4-stable-v4.2.0-20090128
RedHat release: CentOS release 4.6 (Final)
Kernel info: Linux 2.6.9-67.ELsmp i686
NMR Center info (/space/freesurfer exists):
machine: seymour
SUBJECTS_DIR: /space/seymour/4/users/joshdata/
PWD: /space/seymour/4/users/joshdata
When I generated the time course. the overlay I loaded onto the orig volume is
/space/seymour/4/users/joshdata/CC-n8_fixed/bold/EMerror/tal-ffx/ASevfix/cespct.bhdr.
Registration file is: /space/seymour/4/users/joshdata/CC-n8_fixed/bold/EMerror/tal-ffx/register.dat.
The voxel I want to generate a time course for has these coordinates: X -3.96 Y - -20.22 Z - -15.81
When I plug these into the tkmedit tool bar, the emerging time course graph has coordinates X- -4.00 Y - -20.00 Z- -20.00.
While the X and Y coordinates are close enough, the Z is off.
If I change the Z coordinate in the toolbar to -12.3, it will give me a -15. 8 value for the Z coordinate on the time course plot caption.
Is this image legitimate? Which image accurately represents the original coordinates I want to use?
Please write back when you can, and thank you,
Dave Brohawn