1. What is a "low dose" of d-amphetamine for inducing behavioral effects in laboratory rats?

   • David M. Grilly
   • Aaron Loveland

   Review Pages: 155 - 169

2. Involvement of D₂ dopamine receptors in the opposing effects of two CCK-B agonists in a spatial recognition memory task: role of the anterior nucleus accumbens

   • I. Léna
   • H. Dhôtel
   • V. Daugé

   Original Investigation Pages: 170 - 179

3. Pain and negative affect: evidence the inverse benzodiazepine agonist DMCM inhibits pain and learning in rats

   • Amy N. Sieve
   • Tamara E. King
   • Mary W. Meagher

   Original Investigation Pages: 180 - 190

4. Scopolamine fails to diminish chronic haloperidol-induced purposeless chewing in rats

   • Kazuo Sakai
   • Xue-Min Gao
   • Carol A. Tamminga

   Original Investigation Pages: 191 - 195

5. Cognitive performance and serotonergic function in users of ecstasy

   • Robbert J. Verkes
   • Harm J. Gijsman
   • Adam F. Cohen

   Original Investigation Pages: 196 - 202

6. Evidence that orexin-A-evoked grooming in the rat is mediated by orexin-1 (OX₁) receptors, with downstream 5-HT_2C receptor involvement

   • Mark S. Duxon
   • Jennifer Stretton
   • Neil Upton

   Original Investigation Pages: 203 - 209

7. Effects of centrally administered orexin-B and orexin-A: a role for orexin-1 receptors in orexin-B-induced hyperactivity

   • Declan N.C. Jones
   • Jane Gartlon
   • Neil Upton

   Original Investigation Pages: 210 - 218

8. Anxiolytic properties of botanical extracts in the chick social separation-stress procedure

   • Kenneth J. Sufka
   • J. Todd Roach
   • Lu Zeng

   Original Investigation Pages: 219 - 224

9. Individual differences in preferences for and responses to four nicotine replacement products

   • Robert West
   • Peter Hajek
   • Anna Meadows

   Original Investigation Pages: 225 - 230

10. Gender-related differences in response to placebo in benzodiazepine withdrawal: a single-blind pilot study

    • L. Saxon
    • A.J. Hiltunen
    • S. Borg

    Original Investigation Pages: 231 - 237

11. Relationship between plasma risperidone and 9-hydroxyrisperidone concentrations and clinical response in patients with schizophrenia

    • Edoardo Spina
    • Angela Avenoso
    • Emilio Perucca

    Original Investigation Pages: 238 - 243

12. Three sets of diagnostic criteria for major depression and correlations with serotonin-induced platelet calcium mobilization in cancer patients

    • Yosuke Uchitomi
    • Akira Kugaya
    • Shigeto Yamawaki

    Original Investigation Pages: 244 - 248

13. Effects of abstinence and smoking on information processing in adolescent smokers

    • Martin Zack
    • Laura Belsito
    • William A. Corrigall

    Original Investigation Pages: 249 - 257

14. Improved incidental memory with nicotine after semantic processing, but not after phonological processing

    • David M. Warburton
    • Abigail Skinner
    • Christopher D. Martin

    Original Investigation Pages: 258 - 263

15. Fluoxetine in the treatment of Huntington's disease

    • Nicola De Marchi
    • Fabiana Daniele
    • Maria Antonietta Ragone

    Case Report Pages: 264 - 266

16. Synergistic efects of opioid and cannabinoid antagonists on food intake

    • Tim C. Kirkham
    • Claire M. Williams

    Rapid Communication Pages: 267 - 270

17. Allelic variation in the 5-HT_2C receptor (HT2RC) and the increase in slow wave sleep produced by olanzapine

    • A.L. Sharpley
    • C.M. Vassallo
    • P.J. Cowen

    Letter to the Editors Pages: 271 - 272

18. Acknowledgement to Referees

    Pages: 273 - 276