Hi,

Yes, you can do this, but you will need to create dummy registration directories.

The easiest way to do this is to do the following:

 - run one subject through a normal FEAT analysis (first level)

 - in the "reg" subdirectory that it produces:

- replace all the *.mat files with a copy of $FSLDIR/etc/flirtsch/ident.mat (do not delete these files or change their name)

- delete all the *warp* files

 - run updatefeatreg in the feat directory

The resulting "reg" subdirectory can then be copied into your first level analysis directories and this will allow you to use your data in MNI space (without it being changed/resampled).

All the best,

Mark

On 6 Aug 2014, at 00:32, Leslie Cao <[log in to unmask]> wrote:

Dear FSL experts,

I have a question about how to do higher level group analysis without first-level registration. Since we used different approach to preprocess our data, registration was done by other pipeline through MNI warping and brain masking, so all our data are in MNI space now. We have all the feats for individuals but didn't do the preprocessing and registration using FEAT. When I tried to run an group level analysis, it suggested registration has not been run for all the feat directories that you have selected for group analysis， please turn on and set up registration. Is there a way to way group analysis without the registration since our data's already warped into MNI space?

Thanks,

Wen