Thank you, Daniel.
Item four worked for me. However, I used 3dresample after 3dAllineate, too. These are the commands I used:
align_epi_anat.py -anat brain.nii.gz -epi fmri.nii -epi_base 5 -volreg off -tshift off -anat_has_skull no -epi_strip None
3dSurf2Vol -spec std.141.brain.spec -surf_A smoothwm -surf_B pial -grid_parent brain.nii.gz -sv brain.nii.gz -map_func ave -f_steps 20 -f_index points -sdata_1D mask.1d.dset -prefix mask.nii.gz
3dAllineate -prefix align_mask.nii.gz -source mask.nii.gz -NN -1Dmatrix_apply brain_al_mat.aff12.1D
3dresample -master fmri.nii -prefix final_mask.nii.gz -input align_mask.nii.gz
Edited 1 time(s). Last edit at 10/03/2021 06:01PM by Alireza.