Reinforcement Schedule (Latest Articles)

Latest indexed articles for 'Reinforcement Schedule'

Articles 151 to 160 of 200:

Influence of low level maternal Pb exposure and prenatal stress on offspring stress challenge responsivity.

3 Oct 2008 We previously demonstrated potentiated effects of maternal Pb exposure producing blood Pb(PbB) levels averaging 39microg/dl combined with prenatal restraint stress (PS) on stress challenge responsivity of female offspring as adults. The present ...
rec_pub_18951918-influence-low-level-maternal-pb-exposure-prenatal-stress-offspring.htm

Acquisition of peak responding: what is learned?

2 Oct 2008 We investigated how the common measures of timing performance behaved in the course of training on the peak procedure in C3H mice. Following fixed interval (FI) pre-training, mice received 16 days of training in the peak procedure. The peak time and ...
rec_pub_18950695-acquisition-peak-responding-learned.htm

Effect of time-out duration on the reinforcing strength of cocaine assessed under a progressive-ratio schedule in rhesus monkeys.

29 Sep 2008 Progressive-ratio (PR) schedules of reinforcement have provided valuable information regarding the reinforcing strength of cocaine and the underlying neurobiological mechanisms. Parametric manipulations, such as altering time-out (TO) values, can ...
rec_pub_18797251-effect-time-duration-reinforcing-strength-cocaine-assessed.htm

Effects of rimonabant on behavior maintained by progressive ratio schedules of sucrose reinforcement in obese Zucker (fa/fa) rats.

29 Sep 2008 This experiment reports on the ability of rimonabant to alter the reinforcing properties of food in the genetically obese Zucker (fa/fa) rat, a strain that exhibits higher levels of endocannabinoids in brain regions that correspond to heightened ...
rec_pub_18797250-effects-rimonabant-behavior-maintained-progressive-ratio-schedules.htm

Differential-reinforcement-of-low-rate-schedule performance and nicotine administration: a systematic investigation of dose, dose-regimen, and schedule requirement.

29 Sep 2008 Differential-reinforcement-of-low-rate (DRL) schedules have been used to evaluate the effects of a wide variety of drugs, including amphetamines, cannabinoids, and antidepressant medication. To earn a reinforcer, organisms operating under a DRL ...
rec_pub_18797245-differential-reinforcement-low-rate-schedule-performance-nicotine.htm

The reinforcement mountain: allocation of behavior as a function of the rate and intensity of rewarding brain stimulation.

29 Sep 2008 The single-operant matching law has been used to describe the relationship between time allocated to pursuit of brain stimulation reward (BSR) and the obtained rate of reinforcement. We generalize this relationship to a third dimension by including ...
rec_pub_18823168-the-reinforcement-mountain-allocation-behavior-function-rate.htm

Instrumental conditioning of human sensorimotor rhythm (12-15 Hz) and its impact on sleep as well as declarative learning.

29 Sep 2008 STUDY OBJECTIVES: To test whether instrumental conditioning of sensorimotor rhythm (SMR; 12-15 Hz) has an impact on sleep parameters as well as declarative memory performance in humans. DESIGN: Randomized, parallel group design SETTING: 10 ...
rec_pub_18853937-instrumental-conditioning-human-sensorimotor-rhythm-12-15-hz-impact.htm

Negative patterning is easier than a biconditional discrimination.

29 Sep 2008 Two groups of rats were trained for 50 days on different discriminations in a magazine approach paradigm. One group was trained with a negative patterning schedule and a positive patterning schedule concurrently: they received intermixed trials of ...
rec_pub_18954233-negative-patterning-easier-biconditional-discrimination.htm

Micro/kappa opioid interactions in rhesus monkeys: implications for analgesia and abuse liability.

29 Sep 2008 Micro opioid receptor agonists are clinically valuable as analgesics; however, their use is limited by high abuse liability. Kappa opioid agonists also produce antinociception, but they do not produce micro agonist-like abuse-related effects, ...
rec_pub_18837635-micro-kappa-opioid-interactions-rhesus-monkeys-implications-analgesia.htm

A local circuit model of learned striatal and dopamine cell responses under probabilistic schedules of reward.

29 Sep 2008 Recently, dopamine (DA) neurons of the substantia nigra pars compacta (SNc) were found to exhibit sustained responses related to reward uncertainty, in addition to the phasic responses related to reward-prediction errors (RPEs). Thus, cue-dependent ...
rec_pub_18829964-a-local-circuit-model-learned-striatal-dopamine-cell-responses.htm

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