Reinforcement Schedule (Latest Articles)

Latest indexed articles for 'Reinforcement Schedule'

Articles 41 to 50 of 200:

Meal patterns of mice under systematically varying approach and unit costs for food in a closed economy.

21 Apr 2009 Several field and experimental studies have investigated the behavioral economics of food intake. In the laboratory, operant behavior has been used to emulate cost and to generate demand functions that express the relationship between the price of ...
rec_pub_19394352-meal-patterns-mice-systematically-varying-approach-unit-costs-food.htm

Dominant rats are natural risk takers and display increased motivation for food reward.

20 Apr 2009 Risk-taking behavior is a vital aspect mediating the formation of social structure in animals. Here, we utilized the visible burrow system (VBS), a model in which rats form dominance hierarchies, to test the hypothesis that dominant rats in the VBS ...
rec_pub_19393296-dominant-rats-natural-risk-takers-display-increased-motivation-food.htm

Perturbations in different forms of cost/benefit decision making induced by repeated amphetamine exposure.

12 Apr 2009 RATIONALE: Psychostimulant abuse has been linked to impairments in cost-benefit decision making. OBJECTIVE: We assessed the effects of repeated amphetamine (AMPH) treatment in rodents on two distinct forms of decision making. MATERIALS AND METHODS: ...
rec_pub_19365622-perturbations-different-forms-cost-benefit-decision-making-induced.htm

Effects of cocaine self-administration history under limited and extended access conditions on in vivo striatal dopamine neurochemistry and acoustic startle in rhesus monkeys.

12 Apr 2009 RATIONALE: The transition from infrequent and controlled cocaine use to dependence may involve enduring changes in neurobiology as a consequence of persistent drug use. OBJECTIVE: The present study utilized an intravenous drug self-administration ...
rec_pub_19365621-effects-cocaine-self-administration-history-limited-extended-access.htm

Effects of lesions of the nucleus accumbens core on inter-temporal choice: further observations with an adjusting-delay procedure.

7 Apr 2009 Previous experiments using progressive-delay schedules showed that destruction of the nucleus accumbens core (AcbC) altered rats' choice between food reinforcers differing in size and delay. Application of a quantitative model of inter-temporal ...
rec_pub_19463712-effects-lesions-nucleus-accumbens-core-inter-temporal-choice.htm

Cognitive impairment of prefrontal-dependent decision-making in rats after the onset of chronic pain.

6 Apr 2009 Forced choice between alternative options of unpredictable outcome is a complex task that requires continual update of the value associated with each option. Prefrontal areas such as the orbitofrontal cortex (OFC) have been shown to play a major ...
rec_pub_19362121-cognitive-impairment-prefrontal-dependent-decision-making-rats-onset.htm

Metabotropic glutamate receptor 5 (mGluR5) antagonists attenuate cocaine priming- and cue-induced reinstatement of cocaine seeking.

3 Apr 2009 Accumulating evidence suggests that metabotropic glutamate receptors (mGluRs) are involved in both cocaine reinforcement and the reinstatement of cocaine-seeking behavior. In the present experiments, rats were trained to self-administer cocaine ...
rec_pub_19463707-metabotropic-glutamate-receptor-5-mglur5-antagonists-attenuate.htm

Chronic treatment with monoamine oxidase-B inhibitors decreases cocaine reward in mice.

Apr 2009 RATIONALE AND OBJECTIVE: Whether monoamine oxidase inhibitors (MAOIs) can be used to suppress the reinforcing effect of cocaine remains unknown. This study was undertaken to examine effects of a long-term dosing regimen with selective MAOIs on ...
rec_pub_19343328-chronic-treatment-monoamine-oxidase-b-inhibitors-decreases-cocaine.htm

Manipulating pre-feed, density of reinforcement, and extinction produces disruption in the Location variation of a temporal discrimination task in pigeons.

30 Mar 2009 When pharmacological and non-pharmacological agents are used to disrupt temporal discrimination, two major findings have emerged in the literature. One result reveals lateral shifts of the psychophysical curve for time due to disruptors, while the ...
rec_pub_19615617-manipulating-pre-feed-density-reinforcement-extinction-produces.htm

The mGlu5 receptor antagonist 2-methyl-6-(phenylethynyl)pyridine (MPEP) supports intravenous self-administration and induces conditioned place preference in the rat.

30 Mar 2009 We recently reported that the mGlu5 receptor antagonist 2-methyl-6-(phenylethynyl)pyridine (MPEP) reduces intravenous self-administration of ketamine and, to a lesser extent, heroin in rats. We also found that MPEP potentiates conditioned place ...
rec_pub_19326478-the-mglu5-receptor-antagonist-2-methyl-6-phenylethynyl-pyridine-mpep.htm

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