Orbitofrontal and caudate volumes in cannabis users: a multi-site mega-analysis comparing dependent versus non-dependent users.

abstract：RATIONALE:Cannabinoid antagonists purportedly have greater effects in reducing the intake of highly palatable food compared to less palatable food. However, this assertion is based on free-feeding studies in which the amount of palatable food eaten under baseline conditions is often confounded with other variables, suc...

journal_title：Psychopharmacology

authors： Buckley JL,Rasmussen EB

更新日期：2014-05-01 00:00:00

abstract：RATIONALE:Delaying presentation of a drug can decrease its effectiveness as a reinforcer, but the effect of delaying punishment of drug self-administration is unknown. OBJECTIVE:This study examined whether a histamine injection could punish cocaine self-administration in a drug-drug choice, whether delaying histamine ...

journal_title：Psychopharmacology

authors： Woolverton WL,Freeman KB,Myerson J,Green L

更新日期：2012-04-01 00:00:00

abstract：:The behavioural effects of increasing doses of apomorphine and haloperidol were observed in a group of six marmosets. Behaviour was classified quantitatively into categories: Locomotion, inactivity, checking (small head movements), social interaction and purposeful activities. Statistical analysis revealed that apomor...

journal_title：Psychopharmacology

authors： Scraggs PR,Baker HF,Ridley RM

更新日期：1979-01-01 00:00:00

abstract：:Fluctuations in extracellular dopamine and DOPAC levels in nucleus accumbens septi (NAS) were monitored in 1-min microdialysis samples taken from rats engaged in intravenous cocaine self-administration. For four rats the dose per injection was fixed at 2.0 mg/kg; for four others the dose per injection was varied irreg...

journal_title：Psychopharmacology

authors： Wise RA,Newton P,Leeb K,Burnette B,Pocock D,Justice JB Jr

更新日期：1995-07-01 00:00:00

abstract：:Chronic exposure to very mild unpredictable stress has previously been found to depress the consumption of, and preference for, highly palatable sweet solutions. The present study used the place conditioning procedure to investigate whether these effects result from a decreased sensitivity to reward. Rats were subject...

journal_title：Psychopharmacology

authors： Papp M,Willner P,Muscat R

更新日期：1991-01-01 00:00:00

abstract：BACKGROUND:It has recently been shown that acute alcohol globally impairs 'prospective memory' (PM)-remembering to do something in the future (Leitz et al. in Psychopharmacology 205:379-387, 2009). In healthy, sober individuals, simulating future events at encoding enhances PM performance. AIMS:We therefore aimed to d...

journal_title：Psychopharmacology

authors： Paraskevaides T,Morgan CJ,Leitz JR,Bisby JA,Rendell PG,Curran HV

更新日期：2010-02-01 00:00:00

abstract：:Serotonin is a neurotransmitter that is widely distributed throughout the central nervous system. The role of serotonin in schizophrenia is still unclear. Postmortem studies of serotonin receptor subtypes in schizophrenia have been inconclusive for the most part. The most promising findings involve a reduction in 5-HT...

journal_title：Psychopharmacology

authors： Ohuoha DC,Hyde TM,Kleinman JE

更新日期：1993-01-01 00:00:00

abstract：RATIONALE:The influence of the main dopaminergic brain regions controlling copulation, the medial preoptic area (mPOA) and the nucleus accumbens (NAcc), on male rat sexual behavior expression has not been fully established. OBJECTIVE:This work analyzes the sexual effects of dopamine (DA) receptor activation in the mPO...

journal_title：Psychopharmacology

authors： Guadarrama-Bazante IL,Rodríguez-Manzo G

更新日期：2019-04-01 00:00:00

abstract：:Pigeons trained to discriminate between the presence and absence of delta 9-THC (0.56 mg/kg, IM, intramuscularly) were tested with diazepam (5.6-30 mg/kg), administered IG (intragastrically), and were found to generalize the response associated with the THC training to the diazepam treatment only to a limited extent. ...

journal_title：Psychopharmacology

authors： Järbe TU,Hiltunen AJ

更新日期：1988-01-01 00:00:00

abstract：RATIONALE:Chronic pain is becoming a more common medical diagnosis and is especially prevalent in older individuals. As such, prescribed use of opioids is on the rise, even though the efficacy for pain management in older individuals is unclear. OBJECTIVES:Thus, the present preclinical study assessed the effectiveness...

journal_title：Psychopharmacology

authors： Mitzelfelt JD,Carter CS,Morgan D

更新日期：2014-01-01 00:00:00

abstract：:Dose-related effects of ethanol (placebo, 0.30, and 0.60 g/kg) on behavioral and event-related brain potential (ERP) indices of involuntary attention shifting of audition were investigated. ERPs were recorded from 11 healthy social drinkers during a forced-choice reaction-time (RT) task. Subjects were presented with 1...

journal_title：Psychopharmacology

authors： Jääskeläinen IP,Schröger E,Näätänen R

更新日期：1999-01-01 00:00:00

abstract：:The purpose of this study was to investigate the developmental differences in seizure susceptibility in mice and the roles of the histaminergic neuron system in inhibition of convulsions in development. First, we studied developmental differences in electrically-induced seizures. Since the 14-day-old mice showed a dif...

journal_title：Psychopharmacology

authors： Yokoyama H,Onodera K,Iinuma K,Watanabe T

更新日期：1993-01-01 00:00:00

abstract：RATIONALE:Spontaneous fluctuations in the size of the pupil in darkness are a recognized index of sleepiness, and these fluctuations can be quantitatively measured using the pupillographic sleepiness test (PST). The central noradrenergic system is believed to play a role in the maintenance of alertness, and there is ev...

journal_title：Psychopharmacology

authors： Phillips MA,Szabadi E,Bradshaw CM

更新日期：2000-05-01 00:00:00

abstract：:On the heels of clozapine, we now have a number of newer agents (risperidone, olanzapine, quetiapine, sertindole, and ziprasidone). Are they all the same? What are the differences? How do we best understand them? In this article we review current clinical evidence to compare these issues on four measures of atypicalit...

journal_title：Psychopharmacology

authors： Remington G,Kapur S

更新日期：2000-01-01 00:00:00

abstract：RATIONALE:Exposure to a single session of uncontrollable inescapable shock (IS), but not to identical controllable escapable shock, produces a potentiation of morphine's rewarding properties that is unusual in that the stressor can be given a number of days before the drug administration in an environment quite differe...

journal_title：Psychopharmacology

authors： Will MJ,Der-Avakian A,Bland ST,Grahn RE,Hammack SE,Sparks PD,Pepin JL,Watkins LR,Maier SF

更新日期：2004-01-01 00:00:00

abstract：:The formamidine pesticides amitraz and chlordimeform have recently been shown to be potent proconvulsants (Gilbert 1988). Two main neuroactive properties have been identified as mediators of formamidine neurotoxicity, alpha-2 adrenergic agonism and local anesthetic actions. These two proposed mechanisms of formamidine...

journal_title：Psychopharmacology

authors： Gilbert ME,Mack CM

更新日期：1989-01-01 00:00:00

abstract：:BALB/cJ, DBA/2J, and C57BL/6J mice were injected with caffeine and tested, in the five choice Yerkes-Thompson Bryant-Bovt Nitti apparatus for patterns discrimination, in two sets of experiments. In the first the patterns were opposite oriented oblique bars, in the second U-shaped figures, one opened toward the right, ...

journal_title：Psychopharmacology

authors： Castellano C

更新日期：1977-03-16 00:00:00

abstract：:Development of tolerance to neuroleptic compounds tested in the conditional avoidance model was investigated. Since tolerance may manifest itself by a diminished potency and/or a shortened duration of effect, the complete time course of effect was registered in these experiments. Rats were pretreated approximately 2 w...

journal_title：Psychopharmacology

authors： Danneskiold-Samsøoe P,Pedersen V

更新日期：1976-12-21 00:00:00

abstract：RATIONALE:It has been suggested that GABA(B) receptors may be part of a neural substrate mediating some of the effects of ethanol. OBJECTIVE:The purpose of this experiment was to investigate, in mice, the effects of ethanol on working memory in a delayed matching-to position (DMTP) task, and additionally to determine ...

journal_title：Psychopharmacology

authors： Escher T,Mittleman G

更新日期：2004-11-01 00:00:00

abstract：BACKGROUND:Acute administration of selective serotonin and noradrenaline re-uptake blockers to healthy volunteers affects the processing of emotional information but it is not known if similar effects occur with antidepressants acting through other pharmacological mechanisms. Mirtazapine is a clinically established ant...

journal_title：Psychopharmacology

authors： Arnone D,Horder J,Cowen PJ,Harmer CJ

更新日期：2009-05-01 00:00:00

abstract：BACKGROUND AND RATIONALE:Despite the popularity of polysubstance abuse among recreational methylendioxymethamphetamine (MDMA) users, relatively few controlled experimental studies have documented the neurobehavioral effects of MDMA in combination with other abused substances. OBJECTIVE:In this study, the combined acut...

journal_title：Psychopharmacology

authors： Panos JJ,Baker LE

更新日期：2010-03-01 00:00:00

abstract：:Corticotropin releasing factor (CRF), a neuropeptide secreted by hypothalamic and extrahypothalamic neurons, is thought to mediate stress-related behaviors. The tension reduction hypothesis suggests that ethanol drinking reduces stress; that drinking is reinforced by this reduced stress; and that the probability of dr...

journal_title：Psychopharmacology

authors： Bell SM,Reynolds JG,Thiele TE,Gan J,Figlewicz DP,Woods SC

更新日期：1998-09-01 00:00:00

abstract：:Administration of drugs that reduce the influence of dopamine at its receptor site can lead to postsynaptic supersensitivity, whereas treatment with dopamine (DA) agonists can cause postsynaptic subsensitivity. Both unaltered and enhanced postsynaptic responses to DA have been shown after pretreatment with DA agonists...

journal_title：Psychopharmacology

authors： Castro R,Abreu P,Calzadilla CH,Rodriguez M

更新日期：1985-01-01 00:00:00

abstract：RATIONALE:Compared to men, the smoking behavior of women may be less responsive to nicotine and more responsive to nonpharmacological factors, perhaps including verbal information (e.g., dose instructions). OBJECTIVE:This study compared the influence of the presence vs absence of dose instructions on the subjective an...

journal_title：Psychopharmacology

authors： Perkins KA,Doyle T,Ciccocioppo M,Conklin C,Sayette M,Caggiula A

更新日期：2006-03-01 00:00:00

abstract：RATIONALE:Endogenous opioid systems within the mesencephalic periaqueductal gray matter (PAG) appear to be intricately involved in many affective, defensive, submissive, and reflexive responses, and these systems are activated by aversive stimuli. OBJECTIVES:The present experiments evaluated the influence of opioid re...

journal_title：Psychopharmacology

authors： Vivian JA,Miczek KA

更新日期：1999-09-01 00:00:00

abstract：:The present study compared the acute subject-rated and performance-impairing effects of trazodone and triazolam in seven healthy humans. Trazodone (50, 100 and 200 mg), triazolam (0.125, 0.25, 0.50 mg) and placebo were administered orally in a double-blind, crossover design. Drug effects were measured approximately 30...

journal_title：Psychopharmacology

authors： Rush CR,Madakasira S,Hayes CA,Johnson CA,Goldman NH,Pazzaglia PJ

更新日期：1997-05-01 00:00:00

abstract：RATIONALE:Kratom is proposed to exhibit therapeutic potential as an opium substitute, but little is known about its dependence-producing profile, particularly of its main psychoactive compound, mitragynine (MG). OBJECTIVES:This study examined the dependence-producing effects of MG using operant-scheduled behaviour in ...

journal_title：Psychopharmacology

authors： Harun N,Johari IS,Mansor SM,Shoaib M

更新日期：2020-03-01 00:00:00

abstract：:Four benzodiazepine tranquilizers have been tested, alone or in combination with scopolamine, on the spontaneous locomotor activity of BALB/c mice. Scopolamine-induced locomotor stimulation was enhanced by chlordiazepoxide, diazepam, and medazepam, but not by bromazepam. These effects are similar to those exerted by t...

journal_title：Psychopharmacology

authors： Sansone M

更新日期：1980-01-01 00:00:00

abstract：:Preclinical and clinical research supports a role for neuroactive steroids in the pathophysiology of posttraumatic stress disorder (PTSD). We investigated ganaxolone (a synthetic 3β-methylated derivative of allopregnanolone, a GABAergic neuroactive steroid) for treatment of PTSD in a proof-of-concept, multisite, doubl...

journal_title：Psychopharmacology

authors： Rasmusson AM,Marx CE,Jain S,Farfel GM,Tsai J,Sun X,Geracioti TD,Hamner MB,Lohr J,Rosse R,Summerall L,Naylor JC,Cusin C,Lang AJ,Raman R,Stein MB

更新日期：2017-08-01 00:00:00

abstract：RATIONALE:Prior research suggests that high levels of acetylcholine (ACh) in the nucleus accumbens (NAc) are associated with aversive states such as morphine withdrawal, but this has not been tested for nicotine withdrawal. OBJECTIVES:The goal was to test the hypothesis that acute nicotine decreases extracellular ACh ...

journal_title：Psychopharmacology

authors： Rada P,Jensen K,Hoebel BG

更新日期：2001-08-01 00:00:00