Ah, I see. But what do the 27307 rows represent and why are there 6 values per row?
Thanks,
Afsana ______________________________ Afsana Afzal Clinical Research Coordinator Massachusetts General Hospital Division of Neurotherapeutics Department of Psychiatry: Neurosciences 149 13th St, Room 2612 Charlestown, MA 02129 Phone: 617-643-5129 Fax: 617-726-4078
________________________________________ From: freesurfer-bounces@nmr.mgh.harvard.edu [freesurfer-bounces@nmr.mgh.harvard.edu] on behalf of Douglas N Greve [greve@nmr.mgh.harvard.edu] Sent: Tuesday, November 03, 2015 1:31 PM To: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] Extracing values from ces.nii
It should be interpreted as a 2D structure of size 27307*6 = 163842 which are the number of vertices in fsaverage
On 10/29/2015 11:41 AM, Afzal, Afsana wrote:
Hi,
I'm trying to extract the contrast values from ces.nii.gz after first-level analysis. My goal is to average the contrast values for each voxel across subjects for a given condition and see where an individual from a separate population falls within the distribution of contrast values.
The ces.nii file I'm working with has the following dimension: (27307, 1, 6, 1), which I interpreted as containing information about 27307 voxels in a 3D matrix. What does the information in the 6 rows for each voxel represent? I was expecting to get a single raw b-value for each voxel. The structure is consistent with sig.nii and t.nii files as well.
Thanks for any help,
Afsana ______________________________ *Afsana Afzal* Clinical Research Coordinator Massachusetts General Hospital Division of Neurotherapeutics Department of Psychiatry: Neurosciences 149 13th St, Room 2612 Charlestown, MA 02129 Phone: 617-643-5129 Fax: 617-726-4078
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