4Johnson T, Monk T, Rasmussen I.S, et al. postoper-ative cognitive dysfunction in middle-aged patients. Anesthesiol, 2002,96 : 1351-1357.
5Introini-conison IB. Memory enhancement with intra amygdah post-training naloxone is blocked by concurrent administration of propranolol.Brain Res, 1989,476:94.
6Goldmen-Rakic PS. Regional and cellular fraetionation of working memory. Proc Nail Acad Sci USA, 1996, 93:13473-13480.
7Gonzalez-Islas C, Hablitz JJ. Dopamine enhances EPSCs in layer-pyramidal neurons in rat pre-frontal cortex. J Neurosci, 2003,23:867-875.
8Volkow ND, Fowler JS, Wang GJ, et al. Role of dopamine, the frontal cortex and memory circuits in drug addition: insight from imaging studies. Neur-oblol Learn Mem, 2002, 78:610-624.
