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