1. L-Tryptophan administered to chronic sleep-onset insomniacs: Late-appearing reduction of sleep latency

   • Cheryl L. Spinweber

   Original Investigations Pages: 151 - 155

2. Brain sites involved in the mediation of the behavioral effects of intraventricularly administered (−)-nicotine

   • Victor J. DeNoble
   • Paul C. Mele

   Original Investigations Pages: 156 - 159

3. Tetrahydrocannabinol content and differences in marijuana smoking behavior

   • Ronald I. Herning
   • William D. Hooker
   • Reese T. Jones

   Original Investigations Pages: 160 - 162

4. Potentiation of morphine analgesia by d-amphetamine

   • Stephen Sasson
   • Ellen M. Unterwald
   • Conan Kornetsky

   Original Investigations Pages: 163 - 165

5. Does the excitatory amino acid receptor antagonist 2-APH exhibit anxiolytic activity?

   • D. N. Stephens
   • B. S. Meldrum
   • M. Grützner

   Original Investigations Pages: 166 - 169

6. Emotional hyperthermia in spontaneously hypertensive rats

   • Mihály Hajós
   • Göran Engberg

   Original Investigations Pages: 170 - 172

7. The effects of FG 7142 and RO 15-1788 on the release of punished responding produced by chlordiazepoxide and ethanol in the rat

   • G. F. Koob
   • C. Braestrup
   • K. Thatcher Britton

   Original Investigations Pages: 173 - 178

8. The acute effects of ethanol on auditory event-related potentials

   • Richard K. C. Teo
   • David A. Ferguson

   Original Investigations Pages: 179 - 184

9. Temperature dependence of ethanol depression in rats

   • D. A. Finn
   • D. C. Boone
   • R. L. Alkana

   Original Investigations Pages: 185 - 189

10. Effects of centrally administered H₂ antagonists in the behavioral despair test

    • Katherine A. O'Neill
    • Sheldon B. Gertner

    Original Investigations Pages: 190 - 192

11. Discriminative stimulus properties of the serotonin agonist MK 212

    • K. A. Cunningham
    • P. M. Callahan
    • J. B. Appel

    Original Investigations Pages: 193 - 197

12. Reversal by alpha-2 agonists of diazepam withdrawal hyperactivity in rats

    • Joseph Kunchandy
    • S. K. Kulkarni

    Original Investigations Pages: 198 - 202

13. Influence of p-chloroamphetamine and methysergide on the escape deficits provoked by inescapable shock

    • Margaret E. Hamilton
    • Robert M. Zacharko
    • Hymie Anisman

    Original Investigations Pages: 203 - 206

14. Effects of zolpidem, a new imidazopyridine hypnotic, on the acquisition of conditioned fear in mice

    • D. J. Sanger
    • D. Joly
    • B. Zivkovic

    Original Investigations Pages: 207 - 210

15. Methylphenidate and memory: Dissociated effects in hyperactive children

    • Randall W. Evans
    • C. Thomas Gualtieri
    • Ingrid Amara

    Original Investigations Pages: 211 - 216

16. An observational analysis of the effect of the selective kappa opioid agonist, U-50,488H, on feeding and related behaviours in the rat

    • Anne Jackson
    • Steven J. Cooper

    Original Investigations Pages: 217 - 221

17. Agonist and antagonist effects of prototype opiate drugs in fentanyl dose-dose discrimination

    • Francis C. Colpaert
    • Paul A. J. Janssen

    Original Investigations Pages: 222 - 228

18. Specific disruption of spatial behaviour in rats by central muscarinic receptor blockade

    • Paul Willner
    • David Wise
    • Tim Ellis

    Original Investigations Pages: 229 - 235

19. Lithium effects on adjunctive alcohol consumption in rats

    • Garth Hines
    • Deanna F. Henslee

    Original Investigations Pages: 236 - 238

20. The effects of (+)-amphetamine and apomorphine on responding for a conditioned reinforcer

    • Evalynn J. Mazurski
    • Richard J. Beninger

    Original Investigations Pages: 239 - 243

21. The possible modulation of morphine analgesia by the supramolecular GABA receptor complex

    • Ö. Palaoğlu
    • İ. H. Ayhan

    Original Investigations Pages: 244 - 246

22. The effects of haloperidol on amphetamine-and methylphenidate-induced conditioned place preferences and locomotor activity

    • S. Mithani
    • M. T. Martin-Iverson
    • H. C. Fibiger

    Original Investigations Pages: 247 - 252

23. Apomorphine response plasticity in lesioned rats: Supersensitivity dependency and lack of drug- or non-drug-associated environmental cuing

    • D. M. Coward

    Original Investigations Pages: 253 - 258

24. Effects of fixed-ratio length on the development of tolerance to decreased responding by l-nantradol

    • James B. Smith

    Original Investigations Pages: 259 - 262

25. The opiate antagonist naloxone does not arouse man from natural delta sleep

    • J. Netz
    • H. A. Medert
    • J. O. Arndt

    Original Investigations Pages: 263 - 267

26. Increased central alpha₂-adrenoceptor sensitivity in panic disorder

    • David J. Nutt

    Rapid Communications Pages: 268 - 269

27. Fluphenazine activity and antipsychotic response

    • Robert J. Hitzemann
    • David L. Garver
    • Frank P. Zemlan

    Rapid Communications Pages: 270 - 273

28. Reversal of scopolamine-induced amnesia by phosphatidylserine in rats

    • Adriano Zanotti
    • Luigi Valzelli
    • Gino Toffano

    Rapid Communications Pages: 274 - 275

29. Prediction of cortisol response to dexamethasone from age and basal cortisol in normal volunteers: A negative study

    • Marc Ansseau
    • Remy von Frenckell
    • Georges Franck

    Rapid Communications Pages: 276 - 277

30. RO 15-1788 does not influence postpartum aggression in lactating female rats

    • Jan Mos
    • Berend Olivier

    Rapid Communications Pages: 278 - 280

31. Substance P injected into the region of the nucleus basalis magnocellularis facilitates performance of an inhibitory avoidance task

    • E. Kafetzopoulos
    • M. -S. Holzhäuer
    • J. P. Huston

    Rapid Communications Pages: 281 - 283

32. The tail suspension test: Ethical considerations

    • B. Thierry
    • L. Stéru
    • R. D. Porsolt

    Letter to the Editor Pages: 284 - 285