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Steward, Oswald; Huang, Fen; Guzowski, John F. – Learning & Memory, 2007
Stimulation paradigms that induce perforant path long-term potentiation (LTP) initiate phosphorylation of ERK1/2 and induce expression of a variety of immediate early genes (IEGs). These events are thought to be critical components of the mechanism for establishing the changes in synaptic efficacy that endure for hours or longer. Here we show that…
Descriptors: Stimulation, Seizures, Animals, Behavior Modification
Lee, Grace; Disterhoft, John F.; Kuo, Amy G. – Learning & Memory, 2006
A common cellular alteration, reduced post-burst afterhyperpolarization (AHP) in CA1 neurons, is associated with acquisition of the hippocampus-dependent tasks trace eyeblink conditioning and the Morris water maze. As a similar increase in excitability is correlated with these two learning paradigms, we sought to determine the interactive…
Descriptors: Behavioral Science Research, Conditioning, Neurological Organization, Brain
Mitchell, Anna S.; Dalrymple-Alford, John C. – Learning & Memory, 2006
Damage to the medial region of the thalamus, both in clinical cases (e.g., patients with infarcts or the Korsakoff's syndrome) and animal lesion models, is associated with variable amnesic deficits. Some studies suggest that many of these memory deficits rely on the presence of lateral thalamic lesions (LT) that include the intralaminar nuclei,…
Descriptors: Neurological Impairments, Memory, Short Term Memory, Brain
Davis, Michael; Myers, Karyn M.; Ressler, Kerry J. – Learning & Memory, 2006
Fear extinction is defined as a decline in conditioned fear responses (CRs) following nonreinforced exposure to a feared conditioned stimulus (CS). Behavioral evidence indicates that extinction is a form of inhibitory learning: Extinguished fear responses reappear with the passage of time (spontaneous recovery), a shift of context (renewal), and…
Descriptors: Fear, Epidemiology, Behavioral Science Research, Conditioning
Christie, Michael A.; Hersch, Steven M. – Learning & Memory, 2004
In this paper, we demonstrate nondeclarative sequence learning in mice using an animal analog of the human serial reaction time task (SRT) that uses a within-group comparison of behavior in response to a repeating sequence versus a random sequence. Ten female B6CBA mice performed eleven 96-trial sessions containing 24 repetitions of a 4-trial…
Descriptors: Animal Behavior, Behavioral Science Research, Learning Processes, Sequential Learning
Siwicki, Kathleen K.; Riccio, Paul; Ladewski, Lisa; Marcillac, Fabrice; Dartevelle, Laurence; Cross, Stephanie A.; Ferveur, Jean-Francois – Learning & Memory, 2005
Courtship conditioning is an associative learning paradigm in "Drosophila melanogaster," wherein male courtship behavior is modified by experience with unreceptive, previously mated females. While the training experience with mated females involves multiple sensory and behavioral interactions, the authors hypothesized that female cuticular…
Descriptors: Behavioral Science Research, Intimacy, Entomology, Correlation
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
Janus, Christopher – Learning & Memory, 2004
TgCRND8 mice represent a transgenic mouse model of Alzheimer's disease, with onset of cognitive impairment and increasing amyloid-[beta] plaques in their brains at 12 weeks of age. In this study, the spatial memory in 25- to 30-week-old TgCRND8 mice was analyzed in two reference and one working memory Morris water maze (MWM) tests. In reference…
Descriptors: Pathology, Nonverbal Learning, Spatial Ability, Learning Strategies
Hebda-Bauer, Elaine K.; Watson, Stanley J.; Akil, Huda – Learning & Memory, 2005
The impact of a previously successful or unsuccessful experience on the subsequent acquisition of a related task is not well understood. The nature of past experience may have even greater impact in individuals with learning deficits, as their cognitive processes can be easily disrupted. Mice with a targeted disruption of the [alpha] and [delta]…
Descriptors: Memory, Learning Experience, Intervals, Animals