Abstract:
:Dopaminergic involvement in the regulation of operant behavior was examined by monitoring responding after administration of different dopaminergic agonists. A chain schedule of reinforcement was used to classify the effects of these agonists in long-tailed macaques (Macaca fascicularis). The schedule included the following: (1) a 30-s time-out period; (2) a clock-cued 30-s period of differential reinforcement of zero-response rate; (3) a time-in period whose duration depended on response latency; (4) a 2-s reinforcement period in which applesauce was delivered. This cycling schedule maintained a low operant rate and was sensitive to both inhibition (decreases) and excitation (increases) of responding. IV injection of the dopaminergic agonists resulted in the following two basic effects: (1) d-amphetamine and amfonelic acid disrupted performance by response inhibition, which was shown not to be attributable to anorexia; (2) apomorphine and bromocriptine disrupted performance by response excitation. Both effects were reduced by pretreatment with trifluperidol, a dopaminergic antagonist. The results, indicating that dopaminergic systems mediate disruption of food-reinforced operant behavior by altering the frequency of responding, are interpreted in terms of the known neuropharmacological actions of the agonists.
journal_name
Psychopharmacology (Berl)journal_title
Psychopharmacologyauthors
Dooley DJ,Bowden DMdoi
10.1007/BF00429014subject
Has Abstractpub_date
1983-01-01 00:00:00pages
170-6issue
2eissn
0033-3158issn
1432-2072journal_volume
81pub_type
杂志文章abstract::The effects of different doses (0.03, 0.06, 0.12, 0.25, 1.0, 2.0, 4.0, and 8.0 mg/kg body weight) of 5-methoxy-N,N-dimethyltryptamine (5-MeODMT) were tested on the acoustic startle reflex in rats. Beginning at 0.12 mg/kg, 5-MeODMT increased startle monotonically up to the highest dose used. 5-MeODMT still increased st...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00435302
更新日期:1980-01-01 00:00:00
abstract::The 12-h brain lithium concentration was measured by lithium-7 magnetic resonance spectroscopy in ten manic-depressive patients receiving daily or alternate-day lithium carbonate treatment. The median dose of lithium carbonate was 800 mg in the daily treatment group and 1200 mg in the alternate-day group. Median 12-h ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF02246668
更新日期:1996-04-01 00:00:00
abstract:RATIONALE:Enhancement of dopamine (DA) release by corticosteroids may be of aetiological importance in substance misuse. OBJECTIVES:To examine the effect of sub-chronic administration of hydrocortisone on the response to amphetamine in healthy male volunteers. METHODS:Following baseline assessment, 20 volunteers were...
journal_title:Psychopharmacology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/s00213-003-1609-5
更新日期:2004-02-01 00:00:00
abstract:RATIONALE:Coping styles are fundamental characteristics of behavior that affect susceptibility to, and resilience during, mental and physical illness. Shifts from passive to active coping are considered therapeutic goals in many stress-related disorders, but the neural control of coping is poorly understood. Based on e...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-013-3161-2
更新日期:2013-12-01 00:00:00
abstract:RATIONALE:Fluoxetine (Prozac®) is the most frequently prescribed drug to battle depression in pregnant women, but its safety in the unborn child has not yet been established. Fluoxetine, a selective serotonin reuptake inhibitor, crosses the placenta, leading to increased extracellular serotonin levels and potentially n...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-011-2299-z
更新日期:2011-10-01 00:00:00
abstract:RATIONALE:Memories can return to a labile state and become amenable to modification by pharmacological and behavioral manipulations after retrieval. This process may reduce the impact of aversive memories and provide a promising therapeutic technique for the treatment of anxiety disorders. A growing body of evidence su...
journal_title:Psychopharmacology
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00213-018-5074-6
更新日期:2019-01-01 00:00:00
abstract:BACKGROUND:Anti-psychotic treatment appears to be associated with striatal volume increase, but how early this change occurs is still unknown. METHODS:A single prospective cohort of 20 anti-psychotic-naïve patients, newly diagnosed with schizophrenia, underwent magnetic resonance imaging brain scan at baseline. This w...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-009-1619-z
更新日期:2009-10-01 00:00:00
abstract:RATIONALE:The zebrafish dopaminergic system is thought to be evolutionarily conserved and may be amenable to pharmacological manipulation using drugs developed for mammalian receptors. However, only few studies have examined the role of specific receptor subtypes in behaviour of adult zebrafish. OBJECTIVES:The objecti...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-014-3713-0
更新日期:2015-02-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to investigate the relationship between zolpidem use and the risk of acute pancreatitis in Taiwan. METHODS:In this population-based case-control study using the database from the Taiwan National Health Insurance Program from 2000 to 2011, we selected 4535 subjects aged 20-84 years ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-014-3833-6
更新日期:2015-06-01 00:00:00
abstract::Rats chronically treated with increasing daily doses of delta 9-tetrahydrocannabinol (delta 9-THC) for up to 5 or 10 days exhibit a withdrawal-like behavioural response when challenged with clomipramine, a potent inhibitor of serotonin (5-hydroxytryptamine) reuptake, at the time when the next injection of delta 9-THC ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00431112
更新日期:1981-01-01 00:00:00
abstract:RATIONALE:Methamphetamine (METH) is a powerfully addictive stimulant associated with serious health conditions. Accumulating evidence suggests a role of oxidative stress in METH-induced behavioral abnormalities. Sulforaphane (SFN), found in cruciferous vegetables, is a potent antioxidant. It is of interest to determine...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-011-2619-3
更新日期:2012-07-01 00:00:00
abstract:RATIONALE:Alzheimer disease (AD), a progressive neurodegenerative disorder, is the leading cause of dementia in the elderly. A combination of cholinergic and glutamatergic dysfunction appears to underlie the symptomatology of AD, and thus, treatment strategies should address impairments in both systems. Evidence sugges...
journal_title:Psychopharmacology
pub_type: 杂志文章,评审
doi:10.1007/s00213-008-1092-0
更新日期:2008-05-01 00:00:00
abstract:RATIONALE:The endocannabinoid system has been implicated in the pathogenesis of major depression (MD) as well as in the mediation of antidepressant drug effects. OBJECTIVES:To analyze CNR1 gene variants in MD and clinical response to citalopram (selective serotonin re-uptake inhibitors [SSRI]). METHODS:The role of CN...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-013-2995-y
更新日期:2013-06-01 00:00:00
abstract:RATIONALE:Deficits in response inhibition associated with heroin use could last several months after abstinence in heroin users, and their response inhibition can also be interfered with task-irrelevant drug-related cues. However, it is unclear whether exposure to drug-related cues affects subsequent response inhibitio...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-019-05434-6
更新日期:2020-04-01 00:00:00
abstract:RATIONALE:Second-generation antipsychotics occupy dopamine D2 receptors and act as antagonists or partial agonists at these receptors. While these drugs alleviate positive symptoms in patients with schizophrenia, they are less effective for treating cognitive deficits and negative symptoms. Dopamine D3 receptors are hi...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-016-4382-y
更新日期:2016-10-01 00:00:00
abstract::The effects of acutely or chronically administered carbamazepine were studied in rats submitted to the modified Geller-Seifter conflict test. Diazepam was used as a standard anxiolytic. The results showed an increase in punished response after carbamazepine, as observed with diazepam, leading to the suggestion of an a...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF02244411
更新日期:1990-01-01 00:00:00
abstract:BACKGROUND:The thalamus is a major target of dopaminergic projections and is densely connected with the prefrontal cortex. A better understanding of how dopamine changes thalamo-cortical communication may shed light on how dopamine supports cognitive function. Methylphenidate has been shown to facilitate cognitive proc...
journal_title:Psychopharmacology
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00213-020-05505-z
更新日期:2020-06-01 00:00:00
abstract:RATIONALE AND OBJECTIVE:Depression symptoms are now recognized to be the predominant cause of disability for bipolar disorder (BD) patients. The treatment strategies for the depressed phase of BD remain more anecdotal than data-based. Olanzapine has been investigated as an alternative to antidepressants and a mood stab...
journal_title:Psychopharmacology
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00213-014-3453-1
更新日期:2014-07-01 00:00:00
abstract::Efforts to find a correlation between serum levels of chlorpromazine (CPZ) and clinical effect have been rather unsuccessful, which could be due to fluctuations of CPZ and CPZ metabolite levels during treatment, the complicated metabolism of CPZ, or to varying degrees of protein binding. Using a mass fragmentographic ...
journal_title:Psychopharmacology
pub_type: 临床试验,杂志文章
doi:10.1007/BF00431102
更新日期:1981-01-01 00:00:00
abstract::It has previously been shown that serotonergic [5-hydroxytryptamine (5-HT)] neurons of the median raphe nucleus (MR) are critically involved in the control of the hippocampal electroencephalogram (EEG). Activation of MR 5-HT neurons desynchronizes the hippocampal EEG, whereas inhibition of MR 5-HT activity produces hi...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF02311170
更新日期:1995-08-01 00:00:00
abstract:RATIONALE:A recent report described sex differences in the effects of nicotine use and withdrawal on prepulse inhibition of acoustic startle (PPI), but no sex differences in PPI in non-smokers. OBJECTIVE:To determine whether previously reported male>female acoustic PPI reflect sex differences in smoking effects on PPI...
journal_title:Psychopharmacology
pub_type: 临床试验,杂志文章
doi:10.1007/s002130051111
更新日期:1999-09-01 00:00:00
abstract::The effects of olanzapine [LY 170053; 2-methyl-4-(4-methyl-1-piperazinyl)-10H-thieno[2, 3b] [1,5]benzodiazepine), a potential atypical antipsychotic, were determined in pigeons whose keypeck responding was punished. These effects were compared to the anxiolytic agents chlordiazepoxide and pentobarbital, and to other a...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF02246153
更新日期:1995-05-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:We previously found that systemic injections of the 5-HT uptake blocker fluoxetine attenuate intermittent footshock stress-induced reinstatement of alcohol seeking in rats, while inhibition of 5-HT neurons in the median raphe induces reinstatement of alcohol seeking. In this study, we further e...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-006-0346-y
更新日期:2006-05-01 00:00:00
abstract::Depression is common in patients with senile dementia of the Alzheimer type (SDAT) and may precede the onset of the dementia; the underlying biological and neurotransmitter mechanisms may be common to both diseases, so far as norepinephrine lesions are concerned. The major routes of metabolism of amines in the brain u...
journal_title:Psychopharmacology
pub_type: 杂志文章,评审
doi:10.1007/BF02246259
更新日期:1992-01-01 00:00:00
abstract:RATIONALE:Behavioral and dopamine responses to cocaine are sexually dimorphic: Female rats exhibit higher levels of locomotor and reward-associated behaviors after cocaine administration and dopamine release than do males. Activation of the dopamine- and cAMP-regulated phosphoprotein of Mr 32 kDa (DARPP-32) intracellul...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-008-1388-0
更新日期:2009-03-01 00:00:00
abstract::N-carbamoyl-2-(2,6-dichlorophenyl) acetamidine hydrochloride (LON 954) causes a reproducible rest tremor in mice, of rapid onset and short duration with no associated rigidity or akinesia and in the absence of any marked changes in body temperature or accompanying peripheral parasympathomimetic effects. This tremor ca...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00439104
更新日期:1977-04-29 00:00:00
abstract:RATIONALE:Research suggests the experimental manipulation of oxytocin facilitates positive interactions, cooperation, and trust. The mechanism by which oxytocin influences social behavior is not well understood. OBJECTIVE:We explored the hypothesis that oxytocin alters how people perceive themselves, which could be on...
journal_title:Psychopharmacology
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00213-011-2527-6
更新日期:2012-04-01 00:00:00
abstract::Three adult baboons were trained using a psychophysical procedure to discriminate between different synthetic vowel sounds [symbol: see text]. Baboons pressed and held a lever down to produce a pulsed train of a single reference vowel that served as the standard stimulus. Animals were trained to release the lever only...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF02246089
更新日期:1995-11-01 00:00:00
abstract:RATIONALE:3,4-Methylenedioxypyrovalerone (MDPV) is a synthetic cathinone abused for its cocaine-like psychostimulant effects in "bath salts" products. While there are currently no pharmacotherapies for MDPV abuse, rodent studies suggest immunotherapy may offer a feasible treatment option. OBJECTIVES:These studies test...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-020-05558-0
更新日期:2020-09-01 00:00:00
abstract::Effects of chlordiazepoxide (CDP) and ethanolamine-O-sulphate (EOS) alone and in combination were tested on the acquisition and performance of continuous reinforcement - time out (CR-TO) and variable interval reinforcement - time out (VI-TO) operant discriminations in rats. CDP disrupted acquisition of CR-TO discrimin...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00310620
更新日期:1986-01-01 00:00:00