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Conditioning, Operant (Latest Articles)
Latest indexed articles for 'Conditioning, Operant'
Articles 71 to 80 of 200:
Impulsivity predicts the escalation of cocaine self-administration in rats.
29 May 2009 
Impulsivity, as measured by the delay-discounting task, predicts the acquisition of cocaine self-administration and reinstatement of cocaine seeking in rats. The purpose of this study was to extend these results to the escalation phase of drug ...
rec_pub_19490925-impulsivity-predicts-escalation-cocaine-self-administration-rats.htm
Pain and learning in a spinal system: contradictory outcomes from common origins.
25 May 2009 The long-standing belief that the spinal cord serves merely as a conduit for information traveling to and from the brain is changing. Over the past decade, research has shown that the spinal cord is sensitive to response-outcome contingencies, ...
rec_pub_19481111-pain-learning-spinal-system-contradictory-outcomes-common-origins.htm
25 May 2009 Paroxetine is prescribed to treat depression, but it also produces nausea. The potential of animal models to detect nauseating, antidepressant-like, and rewarding/aversive effects of paroxetine were assessed. In Experiments 1 (spaced conditioning ...
rec_pub_19477193-antidepressant-like-effects-paroxetine-produced-lower-doses-produce.htm
Involvement of alpha1-adrenoceptors in conditioned place preference supported by nicotine in rats.
21 May 2009 RATIONALE: The noradrenergic system might be a critical mediator of psychostimulants and opiates hedonic value. OBJECTIVES: The objective of this study is to evaluate the involvement of alpha1-adrenoceptors (alpha1-ARs) in nicotine incentive ...
rec_pub_19466393-involvement-alpha1-adrenoceptors-conditioned-place-preference.htm
The roots and branches of human altruism.
20 May 2009 The authors' rigorous and ingenious programme of work documents young humans' capacity for prosocial action (Warneken & Tomasello, 2009). Their laboratory findings are corroborated by centuries of observational data, spanning cultures, and ...
rec_pub_19467174-the-roots-branches-human-altruism.htm
18 May 2009 The central nucleus of the amygdala (CeA) helps translate learning into motivation, and here, we show that opioid stimulation of CeA magnifies and focuses learned incentive salience onto a specific reward cue (pavlovian conditioned stimulus, or CS). ...
rec_pub_19458221-which-cue-want-central-amygdala-opioid-activation-enhances-focuses.htm
A role for medial prefrontal dopaminergic innervation in instrumental conditioning.
18 May 2009 To investigate the involvement of dopaminergic projections to the prelimbic and infralimbic cortex in the control of goal-directed responses, a first experiment examined the effect of pretraining 6-OHDA lesions of these cortices. We used outcome ...
rec_pub_19458230-a-role-medial-prefrontal-dopaminergic-innervation-instrumental.htm
Delta-9-tetrahydrocannabinol enhances food reinforcement in a mouse operant conflict test.
17 May 2009 RATIONALE: Cannabinoid compounds are known to regulate feeding behavior by modulating the hedonic and/or the incentive properties of food. OBJECTIVES: The aim of this work was to determine the involvement of the cannabinoid system in food ...
rec_pub_19452141-delta-9-tetrahydrocannabinol-enhances-food-reinforcement-mouse.htm
Effects of hot and cold stimulus combinations on the thermal preference of rats.
16 May 2009 Traditional evaluation of pain in animals has primarily used reflexive withdrawal or nocifensive response from singly presented stimulation. However, daily experience of thermal sensation involves situations in which rapid temperature changes from ...
rec_pub_19454295-effects-hot-cold-stimulus-combinations-thermal-preference-rats.htm
12 May 2009 RATIONALE AND OBJECTIVES: Sigma receptors have been implicated in appetitive effects of psychostimulants and in high levels of ethanol intake. This study tested the hypothesis that the sigma-1 receptor subtype (Sig-1R) may modulate ethanol intake. ...
rec_pub_19440699-selective-reduction-alcohol-drinking-sardinian-alcohol-preferring.htm
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