1. Caffeine physical dependence: a review of human and laboratory animal studies

   • Roland R. Griffiths
   • Phillip P. Woodson

   Reviews Pages: 437 - 451

2. Anxiogenic properties of beta-CCE and FG 7142: a review of promises and pitfalls

   • Marie-Hélène Thiébot
   • Philippe Soubrié
   • David Sanger

   Reviews Pages: 452 - 463

3. Acute alcohol effects on plasma estradiol levels in women

   • Jack H. Mendelson
   • Scott E. Lukas
   • Alicja Skupny

   Original Investigations Pages: 464 - 467

4. Role of primary sensory neurons in the central effects of nicotine

   • Mihály Hajós
   • Göran Engberg

   Original Investigations Pages: 468 - 470

5. Stereoselective binding of 11C-raclopride in living human brain — a search for extrastriatal central D2-dopamine receptors by PET

   • L. Farde
   • S. Pauli
   • S. Stone-Elander

   Original Investigations Pages: 471 - 478

6. Characteristics of ethanol tolerance in alcohol drinking (AA) and alcohol avoiding (ANA) rats

   • A. D. Lê
   • K. Kiianmaa

   Original Investigations Pages: 479 - 483

7. Buprenorphine and naloxone alone and in combination in opioid-dependent humans

   • Kenzie L. Preston
   • George E. Bigelow
   • Ira A. Liebson

   Original Investigations Pages: 484 - 490

8. Attenuation of scopolamine-induced impairment of spontaneous alternation behaviour by antagonist but not inverse agonist and agonist β-carbolines

   • Martin Sarter
   • Geert Bodewitz
   • David N. Stephens

   Original Investigations Pages: 491 - 495

9. Vasopressin but not oxytocin enhances cortical arousal: an integrative hypothesis on behavioral effects of neurohypophyseal hormones

   • Gabriele Fehm-Wolfsdorf
   • Georg Bachholz
   • Horst Lorenz Fehm

   Original Investigations Pages: 496 - 500

10. Cueing effects of anxiolytic benzodiazepines (DZP and RO 11-3128): stereospecificity and antagonism by the convulsant benzodiazepine Ro 5-3663

    • Torbjörn U. C. Järbe
    • Anders Östlund
    • Arto J. Hiltunen

    Original Investigations Pages: 501 - 506

11. Dopaminergic stimulation disrupts sensorimotor gating in the rat

    • Robert S. Mansbach
    • Mark A. Geyer
    • David L. Braff

    Original Investigations Pages: 507 - 514

12. A role played by sigma receptors in the conditioned suppression of motility in mice

    • Toshitaka Nabeshima
    • Hiroyuki Kamei
    • Tsutomu Kameyama

    Original Investigations Pages: 515 - 520

13. Short-term lithium administration to healthy volunteers produces long-lasting pronounced changes in platelet serotonin uptake but not imipramine binding

    • M. F. Poirier
    • A. M. Galzin
    • S. Z. Langer

    Original Investigations Pages: 521 - 526

14. The effect of sabeluzole (R 58735) on memory retrieval functions

    • L. Tritsmans
    • G. Clincke
    • W. K. Amery

    Original Investigations Pages: 527 - 531

15. Conditioned taste aversions produced by nicotine in Roman High and Low Avoidance strains of rats

    • M. J. Durcan
    • H. S. Garcha
    • I. P. Stolerman

    Original Investigations Pages: 532 - 535

16. Effects of nicotine on body weight in rats with access to “Junk” foods

    • Neil E. Grunberg
    • Kathryn A. Popp
    • Suzan E. Winders

    Original Investigations Pages: 536 - 539

17. Amelioration of naloxone-precipitated opioid withdrawal symptoms by peripheral administration of the enkephalinase inhibitor acetorphan

    • S. J. Livingston
    • R. D. E. Sewell
    • H. J. Smith

    Original Investigations Pages: 540 - 544

18. Changes in dopamine autoreceptor sensitivity in an animal model of depression

    • Richard Muscat
    • Anthony Towell
    • Paul Willner

    Original Investigations Pages: 545 - 550

19. The effects of chronic chlordiazepoxide administration on ingestion of edible and nonedible substances by rats

    • Astrid Posadas-Andrews
    • Javier Nieto

    Original Investigations Pages: 551 - 557

20. Fawn hooded rats are subsensitive to the food intake suppressant effects of 5-HT agonists

    • Philip Wang
    • Charanjit S. Aulakh
    • Dennis L. Murphy

    Original Investigations Pages: 558 - 562

21. Loss of acute nicotine tolerance and severity of cigarette withdrawal

    • R. West
    • M. A. H. Russell

    Original Investigations Pages: 563 - 565

22. Drop in heart rate following smoking cessation may be permanent

    • R. West
    • Nina Schneider

    Original Investigations Pages: 566 - 568

23. Announcements

    Announcement Pages: 569 - 569