1. Reversal of stress- and CRF-induced anorexia in rats by the synthetic nociceptin/orphanin FQ receptor agonist, Ro 64-6198

   • Roberto Ciccocioppo
   • Michela Biondini
   • Maurizio Massi

   Original Investigation Pages: 113 - 119

2. The neurosteroid 3α-hydroxy-5α-pregnan-20-one affects dopamine-mediated behavior in rodents

   • Rahul T. Khisti
   • Laxmikant S. Deshpande
   • Chandrabhan T. Chopde

   Original Investigation Pages: 120 - 128

3. Metabolic mapping of the time-dependent effects of Δ⁹-tetrahydrocannabinol administration in the rat

   • Christopher T. Whitlow
   • Cory S. Freedland
   • Linda J. Porrino

   Original Investigation Pages: 129 - 136

4. Nighttime versus daytime hypnotic self-administration

   • Timothy Roehrs
   • Alicia Bonahoom
   • Thomas Roth

   Original Investigation Pages: 137 - 142

5. Treatment strategies in patients with major depression not responding to first-line sertraline treatment

   • Rasmus W. Licht
   • Susanne Qvitzau

   Original Investigation Pages: 143 - 151

6. Differential involvement of mu-opioid receptors in the rostral versus caudal nucleus accumbens in the reinforcing effects of heroin in rats: evidence from focal injections of β-funaltrexamine

   • Thomas J. Martin
   • Susy A. Kim
   • James E. Smith

   Original Investigation Pages: 152 - 159

7. Reduced aggression in mice lacking the serotonin transporter

   • Andrew Holmes
   • Dennis L. Murphy
   • Jacqueline N. Crawley

   Original Investigation Pages: 160 - 167

8. Effects of acute and repeated systemic administration of ketamine on prefrontal acetylcholine release and sustained attention performance in rats

   • Christopher L. Nelson
   • Joshua A. Burk
   • Martin Sarter

   Original Investigation Pages: 168 - 179

9. Role of GABA_A/benzodiazepine receptors containing α₁ and α₅ subunits in the discriminative stimulus effects of triazolam in squirrel monkeys

   • Snjezana Lelas
   • James K. Rowlett
   • Wenyuan Yin

   Original Investigation Pages: 180 - 188

10. Dopamine agonist effects on startle and sensorimotor gating in normal male subjects: time course studies

    • Neal R. Swerdlow
    • Angela Eastvold
    • Pamela P. Auerbach

    Original Investigation Pages: 189 - 201

11. High-dose methadone produces superior opioid blockade and comparable withdrawal suppression to lower doses in opioid-dependent humans

    • Eric C. Donny
    • Sharon L. Walsh
    • Maxine L. Stitzer

    Original Investigation Pages: 202 - 212