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. JaskiwBobbi KirkbrideRodolfo Bongiovanni Original Investigation 29 January 2005 Pages: 713 - 724
Selective serotonin 5-HT2A receptor antagonist EMD 281014 improves delayed matching performance in young and aged rhesus monkeys Alvin V. Terry JrJerry J. BuccafuscoGerd D. Bartoszyk Original Investigation 24 December 2004 Pages: 725 - 732
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 SantosTelma G. C. S. de AndradeHélio Zangrossi Jr. Original Investigation 24 December 2004 Pages: 733 - 741
Effects of caffeine and caffeine withdrawal on mood and cognitive performance degraded by sleep restriction Peter J. RogersSusan V. HeatherleyMarian Kane Original Investigation 26 January 2005 Pages: 742 - 752
Repeated injections of sulpiride into the medial prefrontal cortex induces sensitization to cocaine in rats Jeffery D. SteketeeTimothy J. Walsh Original Investigation 24 December 2004 Pages: 753 - 760
The effects of a branched chain amino acid mixture supplemented with tryptophan on biochemical indices of neurotransmitter function and decision-making A. ScarnàS. F. B. McTavishR. D. Rogers Original Investigation 05 February 2005 Pages: 761 - 768
Chronic mild stress induces behavioral and physiological changes, and may alter serotonin 1A receptor function, in male and cycling female rats Angela J. GrippoNicole R. SullivanLouis D. Van de Kar Original Investigation 24 December 2004 Pages: 769 - 780
Chronic administration of citalopram in olfactory bulbectomy rats restores brain 5-HT synthesis rates: an autoradiographic study Shu HasegawaArata WatanabeMirko Diksic Original Investigation 24 December 2004 Pages: 781 - 790
Tryptophan depletion reduces right inferior prefrontal activation during response inhibition in fast, event-related fMRI Katya RubiaFrancis LeePhillip McGuire Original Investigation 26 January 2005 Pages: 791 - 803
Involvement of mu-, delta- and kappa-opioid receptor subtypes in the discriminative-stimulus effects of delta-9-tetrahydrocannabinol (THC) in rats Marcello SolinasSteven R. Goldberg Original Investigation 24 December 2004 Pages: 804 - 812
Cognitive and mood improvements of caffeine in habitual consumers and habitual non-consumers of caffeine Crystal F. HaskellDavid O. KennedyAndrew B. Scholey Original Investigation 28 January 2005 Pages: 813 - 825
Can a subgroup of OCD patients with motor abnormalities and poor therapeutic response be identified? Roland MerglParaskevi MavrogiorgouUlrich Hegerl Original Investigation 26 January 2005 Pages: 826 - 837
Differential effects of topiramate in patients with traumatic brain injury and obesity—a case series Ornah T. DolbergGaby BarkaiShaul Schreiber Original Investigation 24 December 2004 Pages: 838 - 845
The use of sudden darkness in mice: a behavioural and pharmacological approach Bettina BertLuciano F. FelicioAntonia G. Nasello Original Investigation 24 December 2004 Pages: 846 - 853
Complex discriminative stimulus properties of (+)lysergic acid diethylamide (LSD) in C57Bl/6J mice Michael A. BenneyworthRandy L. SmithElaine Sanders-Bush Original Investigation 12 January 2005 Pages: 854 - 862
Disruption of CB1 receptor signaling impairs extinction of spatial memory in mice S. A. VarvelE. A. AnumA. H. Lichtman Original Investigation 24 December 2004 Pages: 863 - 872
Sleep quality deteriorates over a binge–abstinence cycle in chronic smoked cocaine users Edward F. Pace-SchottRobert StickgoldJ. Allan Hobson Original Investigation 26 January 2005 Pages: 873 - 883
The role of 5-HT in the impairment of thermoregulation observed in rats administered MDMA (‘ecstasy’) when housed at high ambient temperature Kathryn S. SaadatEsther O’SheaA. Richard Green Original Investigation 14 January 2005 Pages: 884 - 890
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. YeeJoram Feldon Letter to the Editors 06 January 2005 Pages: 891 - 892
Much ado about (almost) nothing: response to ‘prepulse lost and regained’ Neal R. Swerdlow Letter to the Editors 06 January 2005 Pages: 893 - 894
Dizziness produced by a potent 5HT1A receptor agonist (eptapirone) is not due to postural hypotension S. J. WilsonJ. E. BaileyD. J. Nutt Letter to the Editors 24 December 2004 Pages: 895 - 896