The memory enhancing effects of a Ginkgo biloba/Panax ginseng combination in healthy middle-aged volunteers K.A. WesnesT. WardO. Petrini Original Investigation Pages: 353 - 361
The effects of d-amphetamine, chlordiazepoxide, α-flupenthixol and behavioural manipulations on choice of signalled and unsignalled delayed reinforcement in rats Rudolf N. CardinalTrevor W. RobbinsBarry J. Everitt Original Investigation Pages: 362 - 375
Acute exposure to caffeine selectively disrupts context conditioning in rats Keith P. CorodimasJennifer C. PruittJennifer M. Stieg Original Investigation Pages: 376 - 382
Prefrontal cortical hypometabolism during low-dose interferon alpha treatment Freimut D. JuenglingDieter EbertKlaus Lieb Original Investigation Pages: 383 - 389
Effects of central 5-hydroxytryptamine depletion on sensitivity to delayed and probabilistic reinforcement S. MobiniT.-J. ChiangE. Szabadi Original Investigation Pages: 390 - 397
Effects of GABA agonists and GABA-A receptor modulators on cocaine discrimination in rhesus monkeys S. Stevens NegusNancy K. MelloPeter A. Fivel Original Investigation Pages: 398 - 407
Association between the serotonin 2C receptor gene and tardive dyskinesia in chronic schizophrenia: additive contribution of 5-HT2Cser and DRD3gly alleles to susceptibility Ronnen H. SegmanUriel Heresco-LevyBernard Lerer Original Investigation Pages: 408 - 413
Self-administration of two long-acting monoamine transport blockers in rhesus monkeys Joshua A. LileDrake MorganMichael A. Nader Original Investigation Pages: 414 - 421
Effects of opioid receptor blockade on defensive behavior elicited by electrical stimulation of the aversive substrates of the inferior colliculus in Rattus norvegicus (Rodentia, Muridae) N.C. CoimbraM.Y. OsakiC.R. Biojone Original Investigation Pages: 422 - 430
Periodic postpartum separation from the offspring results in long-lasting changes in anxiety-related behaviors and sensitivity to morphine in Long-Evans mother rats Mikhail KalinichevKeith W. EasterlingStephen G. Holtzman Original Investigation Pages: 431 - 439
Effects of repeated withdrawal from continuous amphetamine administration on brain reward function in rats Neil E. PatersonCynthia MyersAthina Markou Rapid Communication Pages: 440 - 446
