1. The origin of pharmacopsychology: Emil Kraepelin’s experiments in Leipzig, Dorpat and Heidelberg (1882–1892)

   • Ulrich Müller
   • Paul C. Fletcher
   • Holger Steinberg

   Review 24 December 2005 Pages: 131 - 138

2. Prefrontal and temporal gray matter density decreases in opiate dependence

   • In Kyoon Lyoo
   • Mark H. Pollack
   • Perry F. Renshaw

   Original Investigation 21 December 2005 Pages: 139 - 144

   

3. Cocaine self-administration under fixed and progressive ratio schedules of reinforcement: comparison of C57BL/6J, 129X1/SvJ, and 129S6/SvEvTac inbred mice

   • Morgane Thomsen
   • S. Barak Caine

   Original Investigation 21 December 2005 Pages: 145 - 154

   

4. Response to novelty, social and self-control behaviors, in rats exposed to neonatal anoxia: modulatory effects of an enriched environment

   • Walter Adriani
   • Dimitra Giannakopoulou
   • Giovanni Laviola

   Original Investigation 16 December 2005 Pages: 155 - 165

   

5. Anxiolytic-like effects induced by nitric oxide synthase inhibitors microinjected into the medial amygdala of rats

   • Daniel Forestiero
   • Carlos Mora Manfrim
   • Rúbia Maria Weffort de Oliveira

   Original Investigation 15 December 2005 Pages: 166 - 172

   

6. Effect of serotonin depletion on 5-HT_2A-mediated learning in the rabbit: evidence for constitutive activity of the 5-HT_2A receptor in vivo

   • A. G. Romano
   • J. L. Quinn
   • J. A. Harvey

   Original Investigation 21 December 2005 Pages: 173 - 181

   

7. 3,4-Methylenedioxymethamphetamine enhances the release of acetylcholine in the prefrontal cortex and dorsal hippocampus of the rat

   • Sunila G. Nair
   • Gary A. Gudelsky

   Original Investigation 24 December 2005 Pages: 182 - 189

   

8. Effects of haloperidol, clozapine, and quetiapine on sensorimotor gating in a genetic model of reduced NMDA receptor function

   • Gary E. Duncan
   • Sheryl S. Moy
   • Beverly H. Koller

   Original Investigation 16 December 2005 Pages: 190 - 200

   

9. Anti-conflict effects of benzodiazepines in rhesus monkeys: relationship with therapeutic doses in humans and role of GABA_A receptors

   • James K. Rowlett
   • Snjezana Lelas
   • Stephanie C. Licata

   Original Investigation 24 December 2005 Pages: 201 - 211

   

10. A reliable model of intravenous MDMA self-administration in naïve mice

    • José Manuel Trigo
    • Fany Panayi
    • Patricia Robledo

    Original Investigation 15 December 2005 Pages: 212 - 220

    

11. Alcohol-induced impulsivity in rats: an effect of cue salience?

    • Mary C. Olmstead
    • Kim G. C. Hellemans
    • Tracie A. Paine

    Original Investigation 24 December 2005 Pages: 221 - 228

    

12. Some facilitatory effects of lorazepam on dynamic visual binding

    • Mark A. Elliott
    • Anne Giersch
    • Doerthe Seifert

    Original Investigation 23 December 2005 Pages: 229 - 238

    

13. Initial deficit and recovery of function after MDMA preexposure in rats

    • K. A. Brennan
    • S. Schenk

    Original Investigation 16 December 2005 Pages: 239 - 246

    

14. Effects of a brisk walk on blood pressure responses to the Stroop, a speech task and a smoking cue among temporarily abstinent smokers

    • Adrian Taylor
    • Magdalena Katomeri

    Original Investigation 16 December 2005 Pages: 247 - 253

    

15. N-acetylcysteine augmentation in serotonin reuptake inhibitor refractory obsessive-compulsive disorder

    • Daniel L. Lafleur
    • Christopher Pittenger
    • Vladimir Coric

    Letter to the Editors 22 December 2005 Pages: 254 - 256

    

16. Referees 2005

    Acknowledgement to Referees 17 February 2006 Pages: 257 - 262