RT Journal Article SR Electronic T1 DOPAMINERGIC MECHANISMS JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 1137 OP 1137 DO 10.1136/jnnp.39.11.1137 VO 39 IS 11 A1 J. A. Simpson YR 1976 UL http://jnnp.bmj.com/content/39/11/1137.1.abstract AB