Re: [caret-users] help needed

[Donna Dierker]

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


Jiyo cricket on Yahoo! India cricket 

Yahoo! Messenger Mobile 
 
Stay in touch with your buddies all the time.




___
caret-users mailing list
caret-users@brainvis.wustl.edu
http://pulvinar.wustl.edu/mailman/listinfo/caret-users
 




--
Donna L. Dierker
(Formerly Donna Hanlon; no change in marital status -- see 
http://home.att.net/~donna.hanlon for details.)

Re: [caret-users] help needed

[shantanu ghosh]

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





-
 Jiyo cricket on Yahoo! India cricket
Yahoo! Messenger Mobile Stay in touch with your buddies all the time.