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Gehring, Katrin B.; Heufelder, Karin; Feige, Janina; Bauer, Paul; Dyck, Yan; Ehrhardt, Lea; Kühnemund, Johannes; Bergmann, Anja; Göbel, Josefine; Isecke, Marlene; Eisenhardt, Dorothea – Learning & Memory, 2016
The transcription factor cAMP-response element-binding protein (CREB) is involved in neuronal plasticity. Phosphorylation activates CREB and an increased level of phosphorylated CREB is regarded as an indicator of CREB-dependent transcriptional activation. In honeybees ("Apis mellifera") we recently demonstrated a particular high…
Descriptors: Entomology, Animal Behavior, Responses, Stimuli
Jacobs, Stephanie; Wei, Wei; Wang, Deheng; Tsien, Joe Z. – Learning & Memory, 2015
The N-methyl-D-aspartate (NMDA) receptor is known to be necessary for many forms of learning and memory, including social recognition memory. Additionally, the GluN2 subunits are known to modulate multiple forms of memory, with a high GluN2A:GluN2B ratio leading to impairments in long-term memory, while a low GluN2A:GluN2B ratio enhances some…
Descriptors: Learning, Memory, Recognition (Psychology), Animals
Savage, Lisa M.; Hall, Joseph M.; Vetreno, Ryan P. – Learning & Memory, 2011
The anterior thalamic nuclei (ATN) are important for learning and memory as damage to this region produces a persistent amnestic syndrome. Dense connections between the ATN and the hippocampus exist, and importantly, damage to the ATN can impair hippocampal functioning. Acetylcholine (ACh) is a key neurotransmitter in the hippocampus, and in vivo…
Descriptors: Learning, Memory, Brain, Neurological Impairments
Hardt, Oliver; Wang, Szu-Han; Nader, Karim – Learning & Memory, 2009
To this day, it remains unresolved whether experimental amnesia reflects failed memory storage or the inability to retrieve otherwise intact memory. Methodological as well as conceptual reasons prevented deciding between these two alternatives: The absence of recovery from amnesia is typically taken as supporting storage impairment…
Descriptors: Memory, Brain, Foreign Countries, Animals
Albrecht, Doris – Learning & Memory, 2007
It is known from studies outside the brain that upon binding to its receptor, angiotensin-(1-7) elicits the release of prostanoids and nitric oxide (NO). Cyclooxygenase (COX) is a key enzyme that converts arachidonic acid to prostaglandins. Since there are no data available so far on the role of COX-2 in the amygdala, in a first step we…
Descriptors: Stimulation, Brain, Animals, Memory
Holahan, Matthew R.; Honegger, Kyle S.; Tabatadze, Nino; Routtenberg, Aryeh – Learning & Memory, 2007
Previous reports have shown that overexpression of the growth- and plasticity-associated protein GAP-43 improves memory. However, the relation between the levels of this protein to memory enhancement remains unknown. Here, we studied this issue in transgenic mice (G-Phos) overexpressing native, chick GAP-43. These G-Phos mice could be divided at…
Descriptors: Animals, Alzheimers Disease, Memory, Animal Behavior
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
Zearfoss, N. Ruth; Richter, Joel D.; Berger-Sweeney, Joanne – Learning & Memory, 2006
CPEB is a sequence-specific RNA binding protein that regulates translation at synapses. In neurons of CPEB knockout mice, synaptic efficacy is reduced. Here, we have performed a battery of behavioral tests and find that relative to wild-type animals, CPEB knockout mice, although similar on many baseline behaviors, have reduced extinction of…
Descriptors: Neurological Organization, Animal Behavior, Task Analysis, Cytology
Bourtchouladze, Rusiko; Patterson, Susan L.; Kelly, Michele P.; Kreibich, Arati; Kandel, Eric R.; Abel, Ted – Learning & Memory, 2006
The cAMP/PKA pathway plays a critical role in learning and memory systems in animals ranging from mice to "Drosophila" to "Aplysia." Studies of olfactory learning in "Drosophila" suggest that altered expression of either positive or negative regulators of the cAMP/PKA signaling pathway beyond a certain optimum range may be deleterious. Here we…
Descriptors: Memory, Exhibits, Animals, Associative Learning
Cattarelli, Martine; Dardou, David; Datiche, Frederique – Learning & Memory, 2006
When an odor is paired with a delayed illness, rats acquire a relatively weak odor aversion. In contrast, rats develop a strong aversion to an olfactory cue paired with delayed illness if it is presented simultaneously with a gustatory cue. Such a conditioning effect has been referred to as taste-potentiated odor aversion learning (TPOA). TPOA is…
Descriptors: Animal Behavior, Behavior Modification, Nonverbal Learning, Laboratory Experiments
Eichenbaum, Howard; Fortin, Norbert J. – Journal of the Experimental Analysis of Behavior, 2005
The notion that non-human animals are capable of episodic memory is highly controversial. Here, we review recent behavioral work from our laboratory showing that the fundamental features of episodic memory can be observed in rats and that, as in humans, this capacity relies on the hippocampus. We also discuss electrophysiological evidence, from…
Descriptors: Memory, Word Recognition, Familiarity, Olfactory Perception
Joels, Marian; Krugers, Harm; Wiegert, Olof – Learning & Memory, 2006
Stress facilitates memory formation, but only when the stressor is closely linked to the learning context. These effects are, at least in part, mediated by corticosteroid hormones. Here we demonstrate that corticosterone rapidly facilitates synaptic potentiation in the mouse hippocampal CA1 area when high levels of the hormone and high-frequency…
Descriptors: Anxiety, Learning Processes, Drug Use, Animal Behavior
Schroeder, Jason P.; Packard, Mark G. – Learning & Memory, 2004
eThese experiments examined the effects of posttrial peripheral and intra-amygdala injections of the cholinergic muscarinic receptor agonist oxotremorine on memory consolidation underlying extinction of amphetamine conditioned place preference (CPP) behavior. Male Long-Evans rats were initially trained and tested for an amphetamine (2 mg/kg) CPP.…
Descriptors: Rewards, Memory, Behavior Modification, Biochemistry
Gonzalez-Lima, F.; Bruchey, Aleksandra K. – Learning & Memory, 2004
We investigated whether postextinction administration of methylene blue (MB) could enhance retention of an extinguished conditioned response. MB is a redox compound that at low doses elevates cytochrome oxidase activity, thereby improving brain energy production. Saline or MB (4 mg/kg intraperitoneally) were administered to rats for 5 d following…
Descriptors: Memory, Pharmacology, Conditioning, Auditory Stimuli
Strausfeld, Nicholas J.; Pinter, Marianna; Lent, David D. – Learning & Memory, 2005
A unique behavioral paradigm has been developed for "Periplaneta americana" that assesses the timing and success of memory consolidation leading to long-term memory of visual-olfactory associations. The brains of trained and control animals, removed at the critical consolidation period, were screened by two-directional suppression subtractive…
Descriptors: Visual Perception, Neuropsychology, Neurology, Animal Behavior
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