Inclusion Criteria:  Male and female chronic pain patients Patients between the ages of 18-85 years Patients exhibiting the presence of symptoms in excess of 3 months duration Patients suffering from neuropathic (e.g., lower back pain), osteoarthritis, or muscular skeletal pain Patients with evidence of pathology related to the painful condition on which diagnosis was made (e.g., results of imaging or diagnostic pain code) Patients with NRS pain scores across the full range (0-10) at the time of testing  Exclusion Criteria:  • Patients with medically diagnosed psychotic illness, such as Schizophrenia  Patients with medically diagnosed drug or alcohol dependence in the past 12 months Patients with a medical history of head injury with loss of consciousness and amnesia (within the last 2 years) Patients with skull abnormalities that preclude the proper placement of the electrodes for EEG data acquisition Patients who have a spinal cord stimulator, neurological implants, deep brain stimulators, or other pain related implantable devices such as an intrathecal drug pump  Patients for whom the source of pain at the time of the evaluation is associated with: neurological disorders (multiple sclerosis, Parkinson, dementia), diabetes, migraines, or those with reflex / sympathetic dystrophy disorder/complex regional pain syndrome, fibromyalgia, or visceral pain  o Note: This does not exclude patients who suffer from these disorders if the current source of pain is not due to the disorder. For example, patients with diabetes are NOT excluded, but patients whose pain at the time of the evaluation is a result of diabetic neuropathy are excluded. Similarly, patients with a history of migraines but for whom a migraine is not the current source of pain at the time of the evaluation are NOT excluded.  Patients with cancer  o Note: This does not exclude patients who have been in complete remission for more than two years  Patients on workers compensation or disability or have other circumstances which may cause/incentive them to misreport their pain Patient on gabapentin or pregabalin (within the last month) Patients on experimental drugs (i.e. participating in drug trial), use off-label drugs, or are on unapproved dosages Patients who have a history of seizures (within the past 3 months)