For many decades chiropractors were having tremendous success with headache patients who had previously failed to get any help through medical treatments. The critics or skeptics insisted that the results were coincidental, ran their course, simply luck or psychosomatic origin since they could not find any anatomical connection between the cervical (neck) adjustments and the headaches. Finally scientists at the University of Maryland in 1996 discovered that a tiny muscle named the rectus capitus posterior minor (RCPM) actually attaches itself to the brain lining at the base of the skull while on the other end of the muscle attaches itself to the first cervical vertebra (atlas). Consequently any tension on this muscle pulls on the brain lining (dura) which is very sensitive to pain and will result in the patient feeling headaches. There is now an anatomical and structural connection providing a scientific basis for the exceptional results that chiropractors have had with headache patients.