1. Effects of ibogaine on responding maintained by food, cocaine and heroin reinforcement in rats

   • S. I. Dworkin
   • S. Gleeson
   • T. J. Martin

   Original Investigation Pages: 257 - 261

2. Response-dependent versus response-independent presentation of cocaine: differences in the lethal effects of the drug

   • S. I. Dworkin
   • S. Mirkis
   • J. E. Smith

   Original Investigation Pages: 262 - 266

3. Prepulse inhibition of the acoustic startle reflex using visual and auditory prepulses: disruption by apomorphine

   • S. Campeau
   • M. Davis

   Original Investigation Pages: 267 - 274

4. Differential anti-parkinsonian effects of benzazepine D₁ dopamine agonists with varying efficacies in the MPTP-treated common marmoset

   • Kanna K. Gnanalingham
   • Lance A. Smith
   • C. David Marsden

   Original Investigation Pages: 275 - 286

5. The differential behavioural effects of benzazepine D₁ dopamine agonists with varying efficacies, co-administered with quinpirole in primate and rodent models of Parkinson's disease

   • Kanna K. Gnanalingham
   • Peter Jenner
   • C. David Marsden

   Original Investigation Pages: 287 - 297

6. The impact of long-term vitamin supplementation on cognitive functioning

   • D. Benton
   • J. Fordy
   • J. Haller

   Original Investigation Pages: 298 - 305

7. Profile of action of 5-HT₃ receptor antagonists, ondansetron and WAY 100289, in the elevated plus-maze test of anxiety of mice

   • R. J. Rodgers
   • J. C. Cole
   • J. M. Tredwell

   Original Investigation Pages: 306 - 312

8. Effects of the NMDA-antagonist, MK-801, on stress-induced alterations of dopamine dependent behavior

   • Andrea Mele
   • Simona Cabib
   • Alberto Oliverio

   Original Investigation Pages: 313 - 317

9. The selective 5-HT₃ receptor antagonist, WAY100289, enhances spatial memory in rats with ibotenate lesions of the forebrain cholinergic projection system

   • H. Hodges
   • P. Sowinski
   • C. A. Netto

   Original Investigation Pages: 318 - 332

10. Comparative anterograde amnestic and anticonvulsant effects of two types of NMDA receptor antagonists: MK-801 and HA-966

    • X. Xu
    • P. Klinger
    • R. Davis

    Original Investigation Pages: 333 - 339

11. Behavioral vigilance in rats: task validation and effects of age, amphetamine, and benzodiazepine receptor ligands

    • Jill McGaughy
    • Martin Sarter

    Original Investigation Pages: 340 - 357

12. Chronic treatment with fluvoxamine by osmotic minipumps fails to induce persistent functional changes in central 5-HT_1A and 5-HT_1B receptors, as measured by in vivo microdialysis in dorsal hippocampus of conscious rats

    • F. J. Bosker
    • K. E. van Esseveldt
    • H. G. M. Westenberg

    Original Investigation Pages: 358 - 363

13. Sedative potency and 2-[125I]iodomelatonin binding affinity of melatonin analogues

    • D. Sugden

    Original Investigation Pages: 364 - 370

14. Clozapine serum levels and side effects during steady state treatment of schizophrenic patients: a cross-sectional study

    • O. V. Olesen
    • K. Thomsen
    • J. Christensen

    Original Investigation Pages: 371 - 378

15. Effects of lorazepam on human contrast sensitivity

    • J. P. Harris
    • O. T. Phillipson

    Original Investigation Pages: 379 - 384