Hi Shantanu,
There are a couple of ways to do this. If you're lucky enough to have
access to either a ROI or functional volume (e.g., AFNI +tlrc or FSL/SPM
avg152 space group statistical output maps), then you can map them onto
the PALS atlas using the procedure outlined in the PALS_B12 tutorial
http://sumsdb.wustl.edu:8081/sums/directory.do?dir_id=6332260
If you just have a stereotaxic coordinate, then you can use the Layers:
Foci: Map Stereotaxic Focus feature. See page 43 of this tutorial:
Caret 5.2 Tutorial - Introduction, Installation, Visualization, and
Registration
http://brainmap.wustl.edu/caret/pdf/Caret_5_12_Tutorial_Intro.pdf
When doing metanalyses, one thing to keep in mind is that people use the
term Talairach loosely. They may call coordinates talairach, when
they're really in another stereotaxic space (e.g., icbm 152 or Wash U's
711-2B). The PALS atlas contains several different average fiducial
surfaces (in the Caret data_files/fmri_mapping_fils directory) to
support various grids. See this link for more details:
http://brainvis.wustl.edu/help/pals_volume_normalization/
When mapping foci or functional data, make sure you use the average
fiducial surface that most closely resembles the space of your
coordinates/volume. If they're different, then your results are garbage.
On 04/26/2006 04:35 AM, shantanu ghosh wrote:
Dear Caret support
How can I paint Talairach coordinates for different tasks with
different colors onto a single cortical surface for illustration in
metaanalysis?
thanks in advance,
shantanu
Shantanu Ghosh, PhD
Department of Humanities and Social Sciences
Indian Institute of Technology, Delhi
Hauz Khas
New Delhi 110016
INDIA
Tel.: +91-11-2659 6589
Fax: +91-11-2659 6509
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