 |
Conditioning, Operant (Latest Articles)
Latest indexed articles for 'Conditioning, Operant'
Articles 21 to 30 of 200:
Yoked delivery of cocaine is aversive and protects against the motivation for drug in rats.
30 Jul 2009 
In Experiment 1, water-deprived rats had 5-min access to saccharin followed by active or yoked intravenous delivery of saline or cocaine (0.33 mg/infusion). Both cocaine groups avoided intake of the saccharin cue following saccharin-cocaine ...
rec_pub_19634952-yoked-delivery-cocaine-aversive-protects-motivation-drug-rats.htm
30 Jul 2009 The potential role of the prelimbic cortex of the rat in the acquisition of instrumental responding is currently uncertain. In addition, modeling the acquisition of Pavlovian and spatial conditioning tasks has suggested that the process of ...
rec_pub_19634948-the-rat-prelimbic-cortex-mediates-inhibitory-response-control.htm
Insular cortex and consummatory successive negative contrast in the rat.
30 Jul 2009 Rats that are expecting a high value reward (e.g., 1.0 M sucrose) show an exaggerated underresponding when they are instead given a low value reward (e.g., 0.15% saccharin), an effect termed successive negative contrast (SNC). In the present ...
rec_pub_19634939-insular-cortex-consummatory-successive-negative-contrast-rat.htm
30 Jul 2009 Poor impulse control has been associated with compulsive drug seeking and an enhanced risk of relapse, suggesting that impulsivity is causally related to addiction proneness and relapse vulnerability. However, whether this association is specific to ...
rec_pub_19634937-trait-impulsivity-predicts-escalation-sucrose-seeking.htm
Effects of free food deliveries and temporal contiguity on choice under concurrent-chain schedules.
30 Jul 2009 Eight pigeons responded in a concurrent chain with variable-interval (VI) 10-sec and VI 20-sec terminal links. Free food deliveries were then added to the initial links according to a variable-time (VT) 20-sec schedule in two conditions that ...
rec_pub_19648461-effects-free-food-deliveries-temporal-contiguity-choice-concurrent.htm
Choosing to be afraid: preferences for fear as a function of goal pursuit.
30 Jul 2009 According to an instrumental approach to emotion regulation (M. Tamir, in press), people may not always prefer to feel pleasant emotions and avoid unpleasant ones. Instead, they may be motivated to experience even unpleasant emotions when they might ...
rec_pub_19653771-choosing-afraid-preferences-fear-function-goal-pursuit.htm
Sexual dimorphism in facial shapes and their discrimination in Japanese monkeys (Macaca fuscata).
30 Jul 2009 The authors examined the ability of Japanese monkeys (Macaca fuscata) to discriminate between sexes based on facial features. The shape and position of facial features (facial morphology) were measured to quantify the differences between sexes. The ...
rec_pub_19685975-sexual-dimorphism-facial-shapes-discrimination-japanese-monkeys.htm
30 Jul 2009 Previous research with rats and monkeys has shown that tolerance to behavioral effects of cocaine developed if the drug was administered before behavioral test sessions but not if it was administered after sessions, a finding known as contingent ...
rec_pub_19653792-environmental-pharmacological-factors-development-noncontingent.htm
Examination of reinforcement magnitude on the pharmacological disruption of fixed-ratio performance.
30 Jul 2009 Behavioral momentum theory proposes that operant behavior is the product of two separable processes: its rate of occurrence and its resistance to change. Generally speaking, operant situations providing more densely spaced or greater magnitudes of ...
rec_pub_19653789-examination-reinforcement-magnitude-pharmacological-disruption-fixed.htm
Representations of single and compound stimuli in negative and positive patterning.
30 Jul 2009 In four experiments, rats were trained on different patterning discriminations before being tested with compounds composed of novel combinations of the trained stimuli. In Experiment 1, rats were trained on a negative-patterning schedule (A+ B+ AB-) ...
rec_pub_19542090-representations-single-compound-stimuli-negative-positive-patterning.htm
Results: [1-10] [11-20] [21-30] [31-40] [41-50] [51-60] [61-70] [71-80] [81-90] [91-100] [101-110] [111-120] [121-130] [131-140] [141-150] [151-160] [161-170] [171-180] [181-190] [191-200]