investigation of the role of noradrenaline ( na ) and dopamine ( da ) in self-stimulation showed that d-amphetamine ( which releases more da than does l-amphetamine , but not more na ) was much more effective than l-amphetamine in enhancing self-stimulation of na sites in the locus coeruleus and near-lateral hypothalamus .
C0011812
d-amphetamine
C0002658
amphetamine