Hi Arkadeb,
If the fMRI has been co-registered to the anatomical volume, as you say
(or at least infer) below, then try this:
1. Load the fiducial surface in Caret.
2. Load the anatomical to which the fMRI is co-registered using File:
Open Data File: Volume Anatomy file.
3. Ensure alignment of fiducial to anatomical using D/C: Volume Surface
Outline -- toggle on the fiducial surface. The surface should run
roughly along the cortical midthickness. If the
scale/rotation/translation is off, this problem must be resolved first.
4. Load the functional using File: Open Data File: Volume Functional file.
5. Ensure alignment of functional to anatomical using D/C:
Overlay/Underlay and toggle on functional as primary overlay. Make sure
there is no misalignment between functional and anatomical.
6. Attributes: Map volume to Surface: Metric
Add loaded volumes
Map to caret
The rest is pretty much like the tutorial.
Often there is trouble at steps 3 or 5. I've got my fingers crossed you
have no trouble.
Donna
On 09/15/2010 04:56 AM, Arkadeb Dutta wrote:
> Dear All,
> I am recently trying to visualize BOLD-fMRI
> activations in MACAQUE brain in its own fiducial and flattened surface
> by using CARET (version 5.614).
> I have analysed fMRI data in SPM5 and seen the activations in the
> coregisterd anatomical image. Now I want to visualize the SPM5
> activations in flattened and fiducial surface of the same monkey in
> Caret. I dont want to do normalization. Please help me to know the
> steps that I should do to get the desired results.
> Thanking at an early opportunity.
> Regards,
>
> Arkadeb Dutta
> Research Associate,
> Systems Neuroscience Division,
> National Brain Research Centre,
> Manesar, India.
>
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>
>
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