1. Fetal and maternal brain and plasma levels of cocaine and benzoylecgonine following chronic subcutaneous administration of cocaine during gestation in rats

   • Linda Patia Spear
   • Nancy A. Frambes
   • Cheryl L. Kirstein

   Original Investigations Pages: 427 - 431

2. Functional consequences following methamphetamine-induced neuronal damage

   • Michael J. De Vito
   • George C. Wagner

   Original Investigations Pages: 432 - 435

3. Functional role of 5-HT₂ receptors in the regulation of sleep and wakefulness in the rat

   • Christine Dugovic
   • Albert Wauquier
   • Paul A. J. Janssen

   Original Investigations Pages: 436 - 442

4. Food intake in baboons: effects of diazepam

   • Richard W. Foltin
   • Marian W. Fischman
   • Maryanne F. Byrne

   Original Investigations Pages: 443 - 447

5. Tolerance to behavioral effects of physostigmine under interval schedules of positive or negative reinforcement

   • Gregory Galbicka
   • Timothy F. Elsmore
   • Jeffrey M. Witkin

   Original Investigations Pages: 448 - 455

6. Effects of 5-HT_1A agonists and 5-HT₂ antagonists on haloperidol-induced dyskinesias in squirrel monkeys: no evidence for reciprocal 5-HT-dopamine interaction

   • Jeffrey M. Liebman
   • Susan C. Gerhardt
   • Richard Gerber

   Original Investigations Pages: 456 - 461

7. Previous experience disrupts d-amphetamine-induced stereotypic diving in rats

   • Allen D. Petree
   • Terry L. DeVietti

   Original Investigations Pages: 462 - 465

8. Discriminative stimulus properties of midazolam: comparison with other benzodiazepines

   • Fred Woudenberg
   • Jef L. Slangen

   Original Investigations Pages: 466 - 470

9. Cortisol and treatment of depression: predictive value of spontaneous and suppressed cortisol levels and course of spontaneous plasma cortisol

   • P. Christensen
   • A. Lolk
   • S. Nielsen

   Original Investigations Pages: 471 - 475

10. Enhancement of pavlovian conditioned suppression by mild ethanol intoxication

    • Linda L. Hernandez
    • James D. Valentine

    Original Investigations Pages: 476 - 480

11. A fixed dose study of the plasma concentration and clinical effects of thioridazine and its major metabolites

    • Bruce M. Cohen
    • Joseph F. Lipinski
    • Christine Waternaux

    Original Investigations Pages: 481 - 488

12. Effects of serotonin receptor antagonists on PAG stimulation induced aversion: different contributions of 5HT₁, 5HT₂ and 5HT₃ receptors

    • François Jenck
    • Chris L. E. Broekkamp
    • Anton M. L. Van Delft

    Original Investigations Pages: 489 - 495

13. Chronic neuroleptic effects on spatial reversal learning in monkeys

    • Edward D. Levin
    • Lars M. Gunne

    Original Investigations Pages: 496 - 500

14. Role of specific dopamine receptor subtypes in amphetamine discrimination

    • Forrest L. Smith
    • Christopher St. John
    • William H. Lyness

    Original Investigations Pages: 501 - 506

15. The role of 5HT1A receptors in the modulation of the acoustic startle reflex in rats

    • Kevin P. Nanry
    • Hugh A. Tilson

    Original Investigations Pages: 507 - 513

16. Discriminable effects of phencyclidine analogs evaluated by multiple drug (PCP versus other) discrimination training

    • Donald A. Overton
    • C. Frank Shen
    • Lisa P. Gazdick

    Original Investigations Pages: 514 - 520

17. Time-dependent deficits in delay conditioning produced by trimethyltin

    • David B. Peele
    • Jackie D. Farmer
    • Janice E. Coleman

    Original Investigations Pages: 521 - 528

18. Chronic and acute tolerance to the heart rate effects of nicotine

    • Kenneth A. Perkins
    • Leonard H. Epstein
    • Rolf G. Jacob

    Original Investigations Pages: 529 - 534

19. Self-administration of cocaine on a progressive ratio schedule in rats: dose-response relationship and effect of haloperidol pretreatment

    • David C. S. Roberts
    • Elliot A. Loh
    • Gary Vickers

    Original Investigations Pages: 535 - 538

20. Tobacco “chippers” —individual differences in tobacco dependence

    • Saul Shiffman

    Original Investigations Pages: 539 - 547

21. Effect of single and repeated electroconvulsive shock on the hypothalamic-pituitary-adrenal axis and plasma catecholamines in rats

    • Arun B. Thiagarajan
    • Christoph H. Gleiter
    • David J. Nutt

    Original Investigations Pages: 548 - 552

22. Yawning and suppression of exploration in amphetamine-treated rats, incompatibility with the autoreceptor hypothesis

    • Lars Ståhle
    • Urban Ungerstedt

    Original Investigations Pages: 553 - 560

23. Radioreceptor assay for checking benzodiazepine intake

    • S. J. Dencker
    • G. Johansson

    Letter to the Editors Pages: 561 - 562