Due to the combination of severity of chronic pain SCI patients are faced with and the inadequate medical treatments available that this study is pertinent. Although, prior attempts at clinical studies to show efficacy of DBS for pain have essentially failed, the Investigators believe this current protocol offers some unique aspects. Likewise, as mentioned earlier, both neuropathic and nociceptive pain related to SCI is devastating for those afflicted. The Investigators have performed a detailed literature search and reviewed all papers related to DBS and pain. To date there has been very few studies looking at DBS for pain. Of those papers, the etiology of pain was very variable with only a small subset related to spinal cord injury. Of the papers, including spinal cord injury none were well controlled and even fewer reported detailed outcomes, other than to say there was no pain control. Also of importance was that none of those studies truly looked at the effects of chronic stimulation on pain control. This is to say, that each paper had as a criteria, that the patient felt immediate relief of pain at the time of surgery or else the leads were removed and no further stimulation was given. Most papers to date do not detail the outcome measures used to determine pain relief. There are various pain scales that can be used to determine level of pain control, some more accurate than others. Our study will also look at the effects of alternating stimulation parameters on a monthly basis from therapeutic stimulation parameters to sub-therapeutic parameters in a double blinded fashion (patient and examiner). This method of evaluation will give us a unique way to evaluate pain control yet to be performed in any of these prior studies. Likewise, the Investigators will also evaluate the subject's ability to decrease both antiepileptic drugs as well as narcotics as DBS progresses.