It sounds like your BV activation map is in volumetric form, which means
it's worth a try to map it to the AFNI PALS surface.
I can try it on my end if you upload your NIFTI file to
http://pulvinar.wustl.edu/cgi-bin/upload.cgi ; or you can follow the
steps in part 5.1 (p. 67) of this tutorial:
Caret_Tutorial_Oct06.pdf
http://sumsdb.wustl.edu/sums/archivelist.do?archive_id=6602379
it.wustl.edu 59% 3dinfo /usr/local/afni/src/TT_N27+tlrc.HEAD
++ 3dinfo: AFNI version=AFNI_2007_05_29_1644 (Jan 29 2008) [64-bit]
Dataset File: TT_N27+tlrc
Identifier Code: XYZ_f_WYxX9pxjf56FV-eH36Dg Creation Date: Tue Mar 21
12:14:01 2006
Dataset Type: MRI Anatomy (-anat)
Byte Order: MSB_FIRST [this CPU native = LSB_FIRST]
Storage Mode: BRIK file
Storage Space: 4643401 (4.6 million) bytes
Data Axes Tilt: Unspecified, assumed plumb
Data Axes Orientation:
first (x) = Right-to-Left
second (y) = Anterior-to-Posterior
third (z) = Inferior-to-Superior [-orient RAI]
R-to-L extent: -80.000 [R] -to- 80.000 [L] -step- 1.000 mm [161
voxels]
A-to-P extent: -80.000 [A] -to- 110.000 [P] -step- 1.000 mm [191
voxels]
I-to-S extent: -65.000 [I] -to- 85.000 [S] -step- 1.000 mm [151
voxels]
Number of values stored at each pixel = 1
Use AFNI as the space or target surface. It will be closest to BV.
File: Open Data File: GIFTI surface file or functional file.
On 06/23/2010 10:18 AM, [email protected] wrote:
> Hi,
>
> I'm trying to display an activation map generated by BrainVoyager on an
> inflated
> cortical surface, using Caret. I've seen a few prior panlist emails on this
> topic but haven't found a concrete solution. As I see it, there are two
> approaches that might work --
>
> 1) Export the activation map as a NIFTI file, and load this in Caret. I have
> a
> NIFTI file with the activation map, which is in 1mm Talairach space; the
> dimensions of this image are 139x175x121, corresponding to a box around
> cerebral cortex with no padding. Is there a way to directly visualize this
> map
> in Caret, perhaps using the coordinate system for AFNI maps? On this note,
> does
> anyone happen to know of an example statistical map generated by AFNI that I
> might be able to download somewhere, so I can compare the dimensions, etc to
> my
> map? (I haven't used AFNI.)
>
> 2) Export the corresponding surface map as a GIFTI file, and load this in
> Caret.
> I also have a GIFTI file exported from BrainVoyager. How can this be loaded
> into Caret? I'm a new user and have searched the user's guides and internet
> for a guide on this, but haven't been able to find anything.
>
> Thanks for your help,
>
> Ben
> _______________________________________________
> caret-users mailing list
> [email protected]
> http://brainvis.wustl.edu/mailman/listinfo/caret-users
>
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