mri_em_register -rusage /corral-repl/utexas/poldracklab/data/OpenNeuro/ds000114/derivatives/freesurfer-6.0.1/sub-09/touch/rusage.mri_em_register.dat -uns 3 -mask brainmask.mgz nu.mgz /opt/freesurfer/average/RB_all_2016-05-10.vc700.gca transforms/talairach.lta