Dear Bruce etal,
Let's say we have a list of Talairach coordinates from a database of
fMRI results, in a text file. Can we create a tcl script to read those
values and then find the nearest surface point for any subject to each
xyz Talairach value? The tcl script should just return a list of vertex
indices for each Talairach coordinate. Even better would be a small
patch for each Talairach coordinate, based on growing from the nearest
vertex found. Matlab has a function called dsearchn and Alex Wade sent
me some useful c code for the same process, do you have something like
that in the tcl commands? This tcl command below looks related, but
it's not clear what it will do when the x y z values do not fall
precisely on a vertex.
/select_talairach_point/ /*x y z*/
Takes the given talairach coordinate, writes it to the /edit.dat/
file, and then sets the cursor to that point. *x* *y* and *z* are
floating point talairach values.
Best, Darren
--
Darren L. Weber, Ph.D.
Visiting Postdoctoral Scholar
Dynamic Neuroimaging Laboratory, Department of Radiology,
University of California, San Francisco,
185 Berry Street, Suite 350, Box 0946,
San Francisco, CA 94107, USA.
Tel: +1 415 353-9444
Fax: +1 415 353-9421
www: http://dnl.ucsf.edu/users/dweber
"To explicate the uses of the brain seems as difficult
a task as to paint the soul, of which it is commonly
said, that it understands all things but itself."
--Thomas Willis (The Anatomy of the Brain and Nerves, 1664)
_______________________________________________
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
