Hi MVPA users, I am trying to perform multivariate analysis on multi-modal data (T1, FLAIR, and PET). All have been warped to MNI space and resliced to 2mm isotropic voxels. I may be wrong but I haven't seen much documented on the website integrating multiple modalities into an mvpa analysis. (I have seen separate analysis of different types of data (fmri or meg) but not integrated into a single dataset/analysis).
Currently I have stacked the images in the Z direction into one nifti file using fslmerge. I also had to stack 3 copies of a brainmask in the Z direction to properly mask out the brain regions. Originally, I had thought of just concatenating the data into time dimension so that I could use a single mask - but I am not sure if this is appropriate or not. The other reason for not using the time dimension is that I would like to add TBSS data from fsl into the analysis which would necessitate a different mask (something that I could do if I stacked the data in the Z direction). The data is reading in correctly and preliminary analyses seem to be working. I know that this is not an optimal solution. Is there a better method already packaged into mvpa? Thank you, Jeff Stout
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