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Nieto, Javier; Uengoer, Metin; Bernal-Gamboa, Rodolfo – Learning & Memory, 2017
One experiment with rats explored whether an extinction-cue prevents the recovery of extinguished lever-pressing responses. Initially, rats were trained to perform one instrumental response (R1) for food in Context A, and a different instrumental response (R2) in Context B. Then, responses were extinguished each in the alternate context (R1 in…
Descriptors: Cues, Animals, Experiments, Learning Processes
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Bedecarrats, Alexis; Cornet, Charles; Simmers, John; Nargeot, Romuald – Learning & Memory, 2013
Feeding in "Aplysia" provides an amenable model system for analyzing the neuronal substrates of motivated behavior and its adaptability by associative reward learning and neuromodulation. Among such learning processes, appetitive operant conditioning that leads to a compulsive-like expression of feeding actions is known to be associated…
Descriptors: Animals, Animal Behavior, Eating Habits, Associative Learning
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Kelley, Ann E.; Hernandez, Pepe J.; Schiltz, Craig A. – Learning & Memory, 2006
Adaptive motor actions require prior knowledge of instrumental contingencies. With practice, these actions can become highly automatic in nature. However, the molecular and anatomical substrates mediating these related forms of learning are not understood. In the present study, we used in situ hybridization to measure the mRNA levels of two…
Descriptors: Habit Formation, Prior Learning, Training, Genetics