1. Orally delivered methadone as a reinforcer in rhesus monkeys

   • R. B. Stewart
   • J. Grabowski
   • R. A. Meisch

   Original Investigation Pages: 111 - 118

2. The CCK_B antagonist PD-134,308 facilitates rewarding effects of endogenous enkephalins but does not induce place preference in rats

   • O. Valverde
   • M. C. Fournié-Zaluski
   • R. Maldonado

   Original Investigation Pages: 119 - 126

3. Mianserin markedly and selectively increases extracellular dopamine in the prefrontal cortex as compared to the nucleus accumbens of the rat

   • G. Tanda
   • V. Bassareo
   • Di Chiara

   Original Investigation Pages: 127 - 130

4. Devazepide, a CCK_A receptor antagonist, impairs the acquisition of conditioned reward and conditioned activity

   • S. A. Josselyn
   • V. P. Franco
   • F. J. Vaccarino

   Original Investigation Pages: 131 - 143

5. Dose-dependent characterization of the rewarding and stimulant properties of cocaine following intraperitoneal and intravenous administration in rats

   • L. E. O'Dell
   • T. V. Khroyan
   • J. L. Neisewander

   Original Investigation Pages: 144 - 153

6. Preference for diazepam, but not buspirone, in moderate drinkers

   • S. M. Evans
   • R. R. Griffiths
   • H. de Wit

   Original Investigation Pages: 154 - 163

7. The relative salience of morphine and contextual cues as conditioned stimuli

   • N. M. Bormann
   • D. A. Overton

   Original Investigation Pages: 164 - 171

8. Effects of stimulation or blockade of central nicotinic-cholinergic receptors on performance of a novel version of the rat stimulus discrimination task

   • A. V. Terry Jr
   • J. J. Buccafusco
   • M. W. Decker

   Original Investigation Pages: 172 - 181

9. Serotonin reuptake inhibitors reduce conditioned fear stress-induced freezing behavior in rats

   • S. Hashimoto
   • T. Inoue
   • T. Koyama

   Original Investigation Pages: 182 - 186

10. Effect of NMDA receptor antagonists on D₁, D₂ and D₁/D₂ mediated behaviors in intact rats

    • R. Dall'Olio
    • R. Rimondini
    • O. Gandolfi

    Original Investigation Pages: 187 - 190

11. Differential responsiveness of inbred strains of rats to antidepressants in the forced swimming test: are Wistar Kyoto rats an animal model of subsensitivity to antidepressants?

    • A. Lahmame
    • A. Armario

    Original Investigation Pages: 191 - 198

12. Evidence for genetically mediated dysfunction of the central dopaminergic system in the stargazer rat

    • J. W. Brock
    • C. R. Ashby Jr

    Original Investigation Pages: 199 - 205

13. Movements in never-medicated schizophrenics: a preliminary study

    • D. S. Fenn
    • W. F. Hoffman
    • M. Khomeis

    Original Investigation Pages: 206 - 210

14. Amphetamine and negative symptoms of schizophrenia

    • M. Sanfilipo
    • A. Wolkin
    • T. B. Cooper

    Original Investigation Pages: 211 - 214

15. Effects of kappa receptor agonists on D₁ and D₂ dopamine agonist and antagonist-induced behaviors

    • C. Marin
    • T. M. Engber
    • T. N. Chase

    Original Investigation Pages: 215 - 221

16. Announcement

    Announcement Pages: 222 - 222