1. Buprenorphine dosing every 1, 2, or 3 days in opioid-dependent patients

   • Warren K. Bickel
   • Leslie Amass
   • Gary J. Badger

   Original Investigation Pages: 111 - 118

2. Cerebral glucose metabolic and plasma catecholamine responses to the α2 adrenoceptor antagonist ethoxyidazoxan given to healthy volunteers

   • Mark E. Schmidt
   • R. Joan Oshinsky
   • William Z. Potter

   Original Investigation Pages: 119 - 127

3. Voucher-based reinforcement of cocaine abstinence in treatment-resistant methadone patients: effects of reinforcement magnitude

   • K. Silverman
   • Mary Ann Chutuape
   • Maxine L. Stitzer

   Original Investigation Pages: 128 - 138

4. Inhibition by aripiprazole of dopaminergic inputs to striatal neurons from substantia nigra

   • Hiroaki Matsubayashi
   • Taku Amano
   • M. Sasa

   Original Investigation Pages: 139 - 143

5. Strain-dependent effects of MK-801 on passive avoidance behaviour in mice: interactions with morphine and immobilization stress

   • V. Cestari
   • Alessandro Ciamei
   • Claudio Castellano

   Original Investigation Pages: 144 - 152

6. Interactions between social stress and morphine in the periaqueductal gray: effects on affective vocal and reflexive pain responses in rats

   • Jeffrey A. Vivian
   • Klaus A. Miczek

   Original Investigation Pages: 153 - 161

7. Systemic sulpiride in young adult volunteers simulates the profile of cognitive deficits in Parkinson’s disease

   • Mitul A. Mehta
   • B. J. Sahakian
   • Trevor W. Robbins

   Original Investigation Pages: 162 - 174

8. The effects of subchronic haloperidol on intact and dizocilpine-disrupted sensorimotor gating

   • D. Feifel
   • Kristianne Priebe

   Original Investigation Pages: 175 - 179

9. Assessment of GABAA benzodiazepine receptor (GBzR) sensitivity in patients on benzodiazepines

   • J. Potokar
   • Nick Coupland
   • David Nutt

   Original Investigation Pages: 180 - 184

10. Depletion of brain serotonin following intra-raphe injections

    • P. J. Fletcher
    • Karin M. Korth
    • John W. Chambers

    Original Investigation Pages: 185 - 193

11. Acute effects of venlafaxine and paroxetine on serotonergic transmission in human volunteers

    • Richard J. Porter
    • R. Hamish McAllister-Williams
    • A. H. Young

    Original Investigation Pages: 194 - 198

12. Selective effects of nicotine on attentional processes

    • Giovanna Mancuso
    • D. M. Warburton
    • Ezio Tirelli

    Original Investigation Pages: 199 - 204

13. New evidence that the pharmacological effects of benzodiazepine receptor ligands can be associated with activities at different BZ (ω) receptor subtypes

    • G. Griebel
    • Ghislaine Perrault
    • David J. Sanger

    Original Investigation Pages: 205 - 213

14. Adenosine and memory storage:

    • Silvia R. Kopf
    • Alessia Melani
    • G. Pepeu

    Original Investigation Pages: 214 - 219

15. A PET study of D1-like dopamine receptor ligand binding

    • Y.-H. Chou
    • P. Karlsson
    • Lars Farde

    Original Investigation Pages: 220 - 227

16. Sex differences in sensorimotor gating of the human startle reflex: all smoke?

    • N. R. Swerdlow
    • M. A. Geyer
    • D. L. Braff

    Rapid Communication Pages: 228 - 232