Patients who have been randomized into Group 2 will undergo DBS implantation under general anesthesia in an operating room equipped with an intraoperative MRI. Once under anesthesia the patient will be placed into a rigid head holder, and an MRI scan will be obtained to register the navigation system. The location for the holes in the skull will be identified, and the surgery will be commenced. Once the holes have been made in the skull and the dura has been opened, a second MRI scan will be obtained to identify the target. A ceramic stylet will then be stereotactically introduced to the target, and a third MRI sequence will be performed to verify the stylet is indeed at the desired target. The DBS electrode will then be implanted after removing the stylet. A post-operative stereotactic CT scan will be performed to assess lead location and evaluate for intracranial bleeding.