1. Effects of haloperidol in a response-reinstatement model of heroin relapse

   • A. Ettenberg
   • L. A. MacConell
   • T. D. Geist

   Original Investigation Pages: 205 - 210

2. The effects of dopamine D₁ and D₂ receptor antagonists on the rewarding effects of δ₁ and δ₂ opioid receptor agonists in mice

   • T. Suzuki
   • M. Tsuji
   • H. Nagase

   Original Investigation Pages: 211 - 218

3. Comparative behavioral sensitization to stereotypy by direct and indirect dopamine agonists in CF-1 mice

   • J. B. Bedingfield
   • L. D. Calder
   • R. Karler

   Original Investigation Pages: 219 - 225

4. Randomized, double blind, controlled placebo-phase in trial of low dose phenelzine in the chronic fatigue syndrome

   • B. H. Natelson
   • J. Pareja
   • T. W. Findley

   Original Investigation Pages: 226 - 230

5. Behavioural effects in the rat of the putative dopamine D₃ receptor agonist 7-OH-DPAT: comparison with quinpirole and apomorphine

   • R. Depoortere
   • G. Perrault
   • D. J. Sanger

   Original Investigation Pages: 231 - 240

6. Reflexes of the cutaneous microcirculation in amitriptyline and in fluoxetine treated patients

   • M. Mück-Weymann
   • T. Rechlin

   Original Investigation Pages: 241 - 244

7. The use of the rat elevated plus-maze to discriminate between non-selective and BZ-1 (ω ₁) selective, benzodiazepine receptor ligands

   • G. Griebel
   • D. J. Sanger
   • G. Perrault

   Original Investigation Pages: 245 - 254

8. Oxygen administration enhances memory formation in healthy young adults

   • M. C. Moss
   • A. B. Scholey

   Original Investigation Pages: 255 - 260

9. Effects of the novel NMDA-receptor antagonist SDZ EAA 494 on memory and attention in humans

   • S. Rockstroh
   • M. Emre
   • A. Tarral

   Original Investigation Pages: 261 - 266

10. Effects of chronic treatment with zimelidine and REM sleep deprivation on the regulation of raphe neuronal activity in a rat model of depression

    • C. Maudhuit
    • M. Hamon
    • J. Adrien

    Original Investigation Pages: 267 - 274

11. Twelve-hour brain lithium concentration in lithium maintenance treatment of manic-depressive disorder: daily versus alternate-day dosing schedule

    • H. V. Jensen
    • H. Aggernæs
    • O. Henriksen

    Original Investigation Pages: 275 - 278

12. Behavioral sensitization is induced by intravenous self-administration of cocaine by rats

    • A. G. Phillips
    • P. Di Ciano

    Rapid Communication Pages: 279 - 281

13. Examining the relation between usual-brand nicotine yield, blood cotinine concentration and the nicotine-“compensation” hypothesis

    • W. S. Pritchard
    • J. H. Robinson

    Rapid Communication Pages: 282 - 284

14. Prolactin plasma levels and D₂-dopamine receptor occupancy measured with IBZM-SPECT

    • S. Schlegel
    • R. Schlösser
    • K. Hahn

    Rapid Communication Pages: 285 - 287

15. Equithesin without chloral hydrate as an anaesthetic for rats

    • R. M. J. Deacon
    • J. N. P. Rawlins

    Letter To The Editors Pages: 288 - 290

16. Are benzodiazepines antidepressants?

    • G. Laakmann
    • M. Faltermaier-Temizel
    • T. Baghai

    Letter To The Editors Pages: 291 - 292