1. Response of nicotine self-administration in the rat to manipulations of mu-opioid and γ-aminobutyric acid receptors in the ventral tegmental area

   • W. A. Corrigall
   • K. M. Coen
   • J. Zhang

   Original Investigation Pages: 107 - 114

2. Opiate withdrawal-induced place aversion lasts for up to 16 weeks

   • L. Stinus
   • S. Caille
   • G. F. Koob

   Original Investigation Pages: 115 - 120

3. Precipitated and spontaneous withdrawal in rats tolerant to anandamide

   • B. Costa
   • G. Giagnoni
   • M. Colleoni

   Original Investigation Pages: 121 - 128

4. The effects of 3-week estrogen hormone replacement on cognition in elderly healthy females

   • T. Duka
   • R. Tasker
   • J. F. McGowan

   Original Investigation Pages: 129 - 139

5. Antagonism of stimulus properties of nicotine by dihydro-β-erythroidine (DHβE) in rats

   • M. Shoaib
   • C. Zubaran
   • I. P. Stolerman

   Original Investigation Pages: 140 - 146

6. Impulsiveness and the prolactin response to d-fenfluramine

   • J. Evans
   • H. Platts
   • D. Nutt

   Original Investigation Pages: 147 - 152

7. Comparison of intravenous cocaethylene and cocaine in humans

   • C. L. Hart
   • P. Jatlow
   • E. F. McCance-Katz

   Original Investigation Pages: 153 - 162

8. Effect of coadministration of clozapine and fluvoxamine versus clozapine monotherapy on blood cell counts, plasma levels of cytokines and body weight

   • D. Hinze-Selch
   • M. Deuschle
   • T. Pollmächer

   Original Investigation Pages: 163 - 169

9. Sex differences in the discriminative stimulus effects of m-chlorophenylpiperazine and ethanol withdrawal

   • M. E. Jung
   • C. J. Wallis
   • H. Lal

   Original Investigation Pages: 170 - 175

10. Comparison of benzodiazepines and the non-benzodiazepine agents zolpidem and zaleplon with respect to anxiolytic action as measured by increases in hypertonic NaCl-solution drinking in rats

    • E. Lobarinas
    • J. L. Falk

    Original Investigation Pages: 176 - 180

11. Role of dopamine in prepulse inhibition of acoustic startle

    • J. Zhang
    • C. Forkstam
    • L. Svensson

    Original Investigation Pages: 181 - 188

12. Clozapine discrimination with a low training dose distinguishes atypical from typical antipsychotic drugs in rats

    • J. H. Porter
    • S. A. Varvel
    • L. E. Wise

    Rapid Communication Pages: 189 - 193

13. Double-blind placebo-controlled pilot study of paroxetine for specific phobia

    • J. Benjamin
    • I. Z. Ben-Zion
    • P. Dannon

    Letter to the Editors Pages: 194 - 196