RT Journal Article SR Electronic T1 SENSORY, MOTOR, AND REFLEX CHANGES IN TWO CASES OF INTRACTABLE PAIN AFTER STEREOTACTIC MESENCEPHALIC TRACTOTOMY JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 299 OP 305 DO 10.1136/jnnp.22.4.299 VO 22 IS 4 A1 Ansgar Torvik YR 1959 UL http://jnnp.bmj.com/content/22/4/299.abstract AB