Dear all, I have preprocessed functional data with 64x64x59x180 dimension, voxel size 3*3*3 and I would like map them to MNI space. To do this I used a flirt command with following structure: flirt -in 4Dinput -ref /usr/share/fsl/data/standard/MNI152_T1_2mm_brain.nii.gz -out output_MNI -omat output_mat The problem is that while this converts the data to MNI, the output is just a single volume instead of the original 180 volumes. How can I adapt this in order to map the entire 4D dataset to MNI? Would it be appropriate for instance to use the output transformation matrix ("-omat output_mat" above) from this single volume mapping to all volumes using -applyxfm? Thank you in advance. Best regards, Zdenko -- Zdenko KohĂșt PhD Student | Cognitive Neuroscience & Neuroimaging PS/C218, Department of Psychology University of York York, YO10 5DD UK