1. (R)-Methanandamide and Δ⁹-THC as discriminative stimuli in rats: tests with the cannabinoid antagonist SR-141716 and the endogenous ligand anandamide

   • T. Järbe
   • R. Lamb
   • A. Makriyannis

   Original Investigation Pages: 369 - 380

2. Effects of contextual or olfactory cues previously paired with morphine withdrawal on behavior and pain sensitivity in the rat

   • Gavan P. McNally
   • Huda Akil

   Original Investigation Pages: 381 - 387

3. Effects of smoking/nicotine on performance and event-related potentials during a short-term memory scanning task

   • Michael E. Houlihan
   • Walter S. Pritchard
   • John H. Robinson

   Original Investigation Pages: 388 - 396

4. Facilitation and inhibition of retrieval in two aversive tasks in rats by intrahippocampal infusion of agonists of specific glutamate metabotropic receptor subtypes

   • Germán Szapiro
   • Daniela M. Barros
   • Ivan Izquierdo

   Original Investigation Pages: 397 - 401

5. L-Dopa induces dyskinesia in normal monkeys: behavioural and pharmacokinetic observations

   • R. Pearce
   • M. Heikkilä
   • P. Jenner

   Original Investigation Pages: 402 - 409

6. Intravenous self-administration of the cannabinoid CB1 receptor agonist WIN 55,212-2 in rats

   • Liana Fattore
   • Gregorio Cossu
   • Walter Fratta

   Original Investigation Pages: 410 - 416

7. Comparative effects of melatonin, zolpidem and diazepam on sleep, body temperature, blood pressure and heart rate measured by radiotelemetry in Wistar rats

   • François Mailliet
   • Paul Galloux
   • Denise Poisson

   Original Investigation Pages: 417 - 426

8. Temporal factors affecting cocaine-opioid interactions: a cocaine drug discrimination study in rats

   • K. Green-Jordan
   • L. Warren
   • K. Kantak

   Original Investigation Pages: 427 - 434

9. Physiological, subjective and reinforcing effects of oral and intravenous cocaine in humans

   • Brandi J. Smith
   • Hendree E. Jones
   • Roland R. Griffiths

   Original Investigation Pages: 435 - 444

10. Age-related differences in sensitivity to the antinociceptive effects of opioids in male rats

    • Mark A. Smith
    • Jason D. Gray

    Original Investigation Pages: 445 - 453

11. Opposite effects of nefazodone in two human models of anxiety

    • Marilei Silva
    • Luiz B. Hetem
    • Frederico G. Graeff

    Original Investigation Pages: 454 - 460

12. Different types of GABA_A receptors may mediate the anticonflict and response rate-decreasing effects of zaleplon, zolpidem, and midazolam in squirrel monkeys

    • Carol A. Paronis
    • Eric D. Cox
    • Jack Bergman

    Original Investigation Pages: 461 - 468

13. Once weekly administration of nicotine produces long-lasting locomotor sensitization in rats via a nicotinic receptor-mediated mechanism

    • Dennis K. Miller
    • Lincoln H. Wilkins
    • Linda P. Dwoskin

    Original Investigation Pages: 469 - 476

14. Tryptophan depletion increases aggression in women during the premenstrual phase

    • Alyson J. Bond
    • Janet Wingrove
    • Gail D. Critchlow

    Rapid Communication Pages: 477 - 480

15. The chronic effects of an extract of Bacopa monniera (Brahmi) on cognitive function in healthy human subjects

    • C. Stough
    • J. Lloyd
    • P. Nathan

    Rapid Communication Pages: 481 - 484