Hi Maria

are they in register? If so you can do:

mri_convert -rl fmri_data.mgh ribbon.mgz mask.mgz
mri_mask fmri_data.mgh mask.mgz  masked_fmri.mgz

cheers
Bruce


On Mon, 10 Apr 2017, Maria Hakonen wrote:

Dear Freesurfer experts,
I have tried to mask fMRI data with grey matter mask as follows:
mri_mask fmri_data.mgh ribbon.mgz masked_fmri.mgz

However, I am getting an error " dimension mismatch between source and mask".

Could someone please let me know how to solve this problem?

Best,
Maria

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