1. Clozapine-induced dopamine release in the medial prefrontal cortex is augmented by a moderate concentration of locally administered tyrosine but attenuated by high tyrosine concentrations or by tyrosine depletion

   • George E. Jaskiw
   • Bobbi Kirkbride
   • Rodolfo Bongiovanni

   Original Investigation 29 January 2005 Pages: 713 - 724

   

2. Selective serotonin 5-HT_2A receptor antagonist EMD 281014 improves delayed matching performance in young and aged rhesus monkeys

   • Alvin V. Terry Jr
   • Jerry J. Buccafusco
   • Gerd D. Bartoszyk

   Original Investigation 24 December 2004 Pages: 725 - 732

   

3. Serotonergic neurons in the median raphe nucleus regulate inhibitory avoidance but not escape behavior in the rat elevated T-maze test of anxiety

   • Lucinéia dos Santos
   • Telma G. C. S. de Andrade
   • Hélio Zangrossi Jr.

   Original Investigation 24 December 2004 Pages: 733 - 741

   

4. Effects of caffeine and caffeine withdrawal on mood and cognitive performance degraded by sleep restriction

   • Peter J. Rogers
   • Susan V. Heatherley
   • Marian Kane

   Original Investigation 26 January 2005 Pages: 742 - 752

5. Repeated injections of sulpiride into the medial prefrontal cortex induces sensitization to cocaine in rats

   • Jeffery D. Steketee
   • Timothy J. Walsh

   Original Investigation 24 December 2004 Pages: 753 - 760

   

6. The effects of a branched chain amino acid mixture supplemented with tryptophan on biochemical indices of neurotransmitter function and decision-making

   • A. Scarnà
   • S. F. B. McTavish
   • R. D. Rogers

   Original Investigation 05 February 2005 Pages: 761 - 768

   

7. Chronic mild stress induces behavioral and physiological changes, and may alter serotonin 1A receptor function, in male and cycling female rats

   • Angela J. Grippo
   • Nicole R. Sullivan
   • Louis D. Van de Kar

   Original Investigation 24 December 2004 Pages: 769 - 780

   

8. Chronic administration of citalopram in olfactory bulbectomy rats restores brain 5-HT synthesis rates: an autoradiographic study

   • Shu Hasegawa
   • Arata Watanabe
   • Mirko Diksic

   Original Investigation 24 December 2004 Pages: 781 - 790

   

9. Tryptophan depletion reduces right inferior prefrontal activation during response inhibition in fast, event-related fMRI

   • Katya Rubia
   • Francis Lee
   • Phillip McGuire

   Original Investigation 26 January 2005 Pages: 791 - 803

   

10. Involvement of mu-, delta- and kappa-opioid receptor subtypes in the discriminative-stimulus effects of delta-9-tetrahydrocannabinol (THC) in rats

    • Marcello Solinas
    • Steven R. Goldberg

    Original Investigation 24 December 2004 Pages: 804 - 812

    

11. Cognitive and mood improvements of caffeine in habitual consumers and habitual non-consumers of caffeine

    • Crystal F. Haskell
    • David O. Kennedy
    • Andrew B. Scholey

    Original Investigation 28 January 2005 Pages: 813 - 825

    

12. Can a subgroup of OCD patients with motor abnormalities and poor therapeutic response be identified?

    • Roland Mergl
    • Paraskevi Mavrogiorgou
    • Ulrich Hegerl

    Original Investigation 26 January 2005 Pages: 826 - 837

    

13. Differential effects of topiramate in patients with traumatic brain injury and obesity—a case series

    • Ornah T. Dolberg
    • Gaby Barkai
    • Shaul Schreiber

    Original Investigation 24 December 2004 Pages: 838 - 845

14. The use of sudden darkness in mice: a behavioural and pharmacological approach

    • Bettina Bert
    • Luciano F. Felicio
    • Antonia G. Nasello

    Original Investigation 24 December 2004 Pages: 846 - 853

    

15. Complex discriminative stimulus properties of (+)lysergic acid diethylamide (LSD) in C57Bl/6J mice

    • Michael A. Benneyworth
    • Randy L. Smith
    • Elaine Sanders-Bush

    Original Investigation 12 January 2005 Pages: 854 - 862

    

16. Disruption of CB₁ receptor signaling impairs extinction of spatial memory in mice

    • S. A. Varvel
    • E. A. Anum
    • A. H. Lichtman

    Original Investigation 24 December 2004 Pages: 863 - 872

    

17. Sleep quality deteriorates over a binge–abstinence cycle in chronic smoked cocaine users

    • Edward F. Pace-Schott
    • Robert Stickgold
    • J. Allan Hobson

    Original Investigation 26 January 2005 Pages: 873 - 883

    

18. The role of 5-HT in the impairment of thermoregulation observed in rats administered MDMA (‘ecstasy’) when housed at high ambient temperature

    • Kathryn S. Saadat
    • Esther O’Shea
    • A. Richard Green

    Original Investigation 14 January 2005 Pages: 884 - 890

    

19. Prepulse lost and regained: a commentary on “Weak prepulses inhibit but do not elicit startle in rats and humans” Biological Psychiatry 55:98–101

    • Benjamin K. Yee
    • Joram Feldon

    Letter to the Editors 06 January 2005 Pages: 891 - 892

    

20. Much ado about (almost) nothing: response to ‘prepulse lost and regained’

    • Neal R. Swerdlow

    Letter to the Editors 06 January 2005 Pages: 893 - 894

21. Dizziness produced by a potent 5HT_1A receptor agonist (eptapirone) is not due to postural hypotension

    • S. J. Wilson
    • J. E. Bailey
    • D. J. Nutt

    Letter to the Editors 24 December 2004 Pages: 895 - 896