1. Self-administration of D₁ receptor agonists by squirrel monkeys

   • D. M. Grech
   • R. D. Spealman
   • J. Bergman

   Original Investigation Pages: 97 - 104

2. Different behavioral effects of haloperidol, clozapine and thioridazine in a concurrent lever pressing and feeding procedure

   • J. D. Salamone
   • M. S. Cousins
   • J. Kovach

   Original Investigation Pages: 105 - 112

3. In vivo apparent pA₂ analysis in rats treated with either clocinnamox or morphine

   • E. A. Walker
   • T. M. Richardson
   • A. M. Young

   Original Investigation Pages: 113 - 119

4. Cocaine's effects on speech sound identification and reaction times in baboons

   • R. D. Hienz
   • T. J. Zarcone
   • J. V. Brady

   Original Investigation Pages: 120 - 128

5. Interval-dependent inhibition of morphine sensitization of ambulation in mice by post-morphine treatment with naloxone or restraint

   • H. Kuribara

   Original Investigation Pages: 129 - 134

6. Effects of diltiazem, a Ca²⁺ channel blocker, on naloxone-precipitated changes in dopamine and its metabolites in the brains of opioid-dependent rats

   • S. Toluyama
   • I. K. Ho

   Original Investigation Pages: 135 - 140

7. Chronic GnRH agonist administration down-regulates platelet serotonin transporter in women undergoing assisted reproductive treatment

   • S. Eyal
   • M. Rehavi
   • Y. Dor

   Original Investigation Pages: 141 - 145

8. Comparison of the effects of the 5-HT₃ receptor antagonists WAY-100579 and ondansetron on spatial learning in the water maze in rats with excitotoxic lesions of the forebrain cholinergic projection system

   • H. Hodges
   • P. Sowinski
   • A. Fletcher

   Original Investigation Pages: 146 - 161

9. Chronic lithium attenuates dopamine D₁-receptor mediated increases in acetylcholine release in rat frontal cortex

   • E. Acquas
   • H. C. Fibiger

   Original Investigation Pages: 162 - 167

10. Behavioural evidence thatd-fenfluramine-induced anorexia in the rat is not mediated by the 5-HT_1A receptor subtype

    • S. P. Vickers
    • P. G. Clifton
    • C. T. Dourish

    Original Investigation Pages: 168 - 175

11. Methodological considerations in nicotine research: the use of “denicotinised” cigarettes as the control condition in smoking studies

    • J. M. Rusted
    • L. Graupner
    • K. Greenwood

    Rapid Communication Pages: 176 - 178

12. Effects of a small dose of triazolam on P300 and resting EEG

    • J. Urata
    • T. Enomoto
    • H. Yamadera

    Rapid Communication Pages: 179 - 184