The main safety concern associated with the experimental set-up is the potential for ferromagnetic objects to be pulled with great force into the bore of the fMRI magnet. To minimize this risk, all ancillary equipment, such as the shield and rolling table, are constructed from non-magnetic materials. As the haptic robot itself contains ferromagnetic materials, special care must be exercised with respect to its positioning. The robot is secured to the rolling table and the entire assembly is tethered to the wall prior to rolling the assembly into the magnet room. The length of the tether is designed so that the robot cannot move past the end of the patient table. Finally, to ensure safe operation, experimental personnel must take special care to follow the detailed protocol described elsewhere in this document.