1. Behavioral and physiological effects of xanthines in nonhuman primates

   • L. L. Howell
   • Vicki L. Coffin
   • Roger D. Spealman

   REVIEW Pages: 1 - 14

2. Effect of naltrexone on subjective alcohol response in subjects at high and low risk for future alcohol dependence

   • Andrea C. King
   • Joseph R. Volpicelli
   • Charles P. O’Brien

   ORIGINAL INVESTIGATION Pages: 15 - 22

3. Influence of body size on lithium levels in rats

   • S. Levine
   • Arthur Saltzman
   • Thomas B. Cooper

   ORIGINAL INVESTIGATION Pages: 23 - 26

4. The inhibitory effects on sexual behavior and ambulatory activity of the mixed GABAA/GABAB agonist progabide are differentially blocked by GABA receptor antagonists

   • A. Ågmo
   • Raúl G. Paredes
   • Irma Garcés

   ORIGINAL INVESTIGATION Pages: 27 - 34

5. Nicotine self-administration in rats: strain and nicotine pre-exposure effects on acquisition

   • M. Shoaib
   • Charles W. Schindler
   • Steven R. Goldberg

   ORIGINAL INVESTIGATION Pages: 35 - 43

6. Differential effects of lithium on platelet protein phosphorylation in bipolar patients and healthy subjects

   • R. Zanardi
   • Giorgio Racagni
   • Jorge Perez

   ORIGINAL INVESTIGATION Pages: 44 - 47

7. Effect of destruction of the 5-hydroxytryptaminergic pathways on temporal memory: quantitative analysis with a delayed interval bisection task

   • S. S. A. Al-Zahrani
   • M.-Y. Ho
   • E. Szabadi

   ORIGINAL INVESTIGATION Pages: 48 - 55

8. Opiate withdrawal signs precipitated by naloxone following a single exposure to morphine: potentiation with a second morphine exposure

   • Gery Schulteis
   • Charles J. Heyser
   • George F. Koob

   ORIGINAL INVESTIGATION Pages: 56 - 65

9. Thiamine supplementation mood and cognitive functioning

   • D. Benton
   • Rebecca Griffiths
   • Jurg Haller

   ORIGINAL INVESTIGATION Pages: 66 - 71

10. Preference for saccharin-sweetened alcohol relative to isocaloric sucrose

    • Gene M. Heyman

    ORIGINAL INVESTIGATION Pages: 72 - 78

11. Blockade of phencyclidine-induced hyperlocomotion by olanzapine, clozapine and serotonin receptor subtype selective antagonists in mice

    • S. D. Gleason
    • Harlan E. Shannon

    ORIGINAL INVESTIGATION Pages: 79 - 84

12. Scopolamine impairs the ability of parturient ewes to learn to recognise their lambs

    • F. Lévy
    • Ph. Richard
    • N. Ravel

    ORIGINAL INVESTIGATION Pages: 85 - 90

13. Chronic nimodipine and acute metrifonate treatment decreases age-related cortical high voltage spindles in rats

    • P. Riekkinen Jr.
    • Bernard Schmidt
    • Markus Björklund

    ORIGINAL INVESTIGATION Pages: 91 - 95

14. Glycyldodecylamide, a phencyclidine behavioral antagonist, blocks cortical glycine uptake: implications for schizophrenia and substance abuse

    • D. C. Javitt
    • Mark Frusciante

    RAPID COMMUNICATION Pages: 96 - 98