Inclusion Criteria:  Adults 18-65 years of age Have chronic low back pain primarily in the L4-5 area that has persisted at least 3 months and has resulted in pain on at least half the days in the past 6 months  Exclusion Criteria:  Systemic joint disease (e.g. rheumatoid arthritis, psoriasis arthritis) Fracture Infection Tumor Neurological disorders (e.g., radiculopathy, myelopathy, cauda equina syndrome) Cancer Raynaud's disease Pregnancy, previous low back surgery Immunocompromised disease (e.g., diabetes mellitus, HIV, AIDS, lupus) Bleeding disorders (e.g. hemophilia) Use of anti-coagulants (e.g. Coumadin) A history of significant head trauma An electrical, magnetic, or mechanical implantation (e.g. cardiac pacemakers or intracerebral vascular clip) A metal implantation in the head and neck areas, A history of seizures or unexplained loss of consciousness An immediate family member with epilepsy Use of seizure threshold lowering medicine Current abuse of alcohol or drugs A history of psychiatric illness requiring medication controls Inability to maintain the testing and treatment positions (i.e., slightly leaning forward while sitting and prone-lying) for 15 minutes at a time