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Cheng, Jingjun; Feenstra, Matthijs G. P. – Learning & Memory, 2006
Combined activation of dopamine D1- and NMDA-glutamate receptors in the nucleus accumbens has been strongly implicated in instrumental learning, the process in which an individual learns that a specific action has a wanted outcome. To assess dopaminergic activity, we presented rats with two sessions (30 trials each) of a one-lever appetitive…
Descriptors: Rewards, Biochemistry, Nonverbal Learning, Animals
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Celerier, Aurelie; Pierard, Christophe; Rachbauer, Dagmar; Sarrieau, Alain; Beracochea, Daniel – Learning & Memory, 2004
The present study was aimed at simultaneously determining on the same subject, the effects of stress on retrieval of flexible (contextual or temporal) or stable (spatial) information. Three behavioral paradigms carried out in a four-hole board were designed as follows: (1) Simple Discrimination (SD), in which mice learned a single discrimination;…
Descriptors: Animals, Anxiety, Models, Discrimination Learning