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Sathiyakumar, Sankirthana; Carrasco, Sofia Skromne; Saad, Lydia; Richards, Blake A. – Learning & Memory, 2020
Behavioral flexibility is important in a changing environment. Previous research suggests that systems consolidation, a long-term poststorage process that alters memory traces, may reduce behavioral flexibility. However, exactly how systems consolidation affects flexibility is unknown. Here, we tested how systems consolidation affects: (1)…
Descriptors: Memory, Animals, Rewards, Food
Marchal, Paul; Villar, Maria Eugenia; Geng, Haiyang; Arrufat, Patrick; Combe, Maud; Viola, Haydée; Massou, Isabelle; Giurfa, Martin – Learning & Memory, 2019
Honeybees are a standard model for the study of appetitive learning and memory. Yet, fewer attempts have been performed to characterize aversive learning and memory in this insect and uncover its molecular underpinnings. Here, we took advantage of the positive phototactic behavior of bees kept away from the hive in a dark environment and…
Descriptors: Inhibition, Learning Processes, Memory, Molecular Structure
Vousden, George H.; Paulcan, Sloane; Robbins, Trevor W.; Eagle, Dawn M.; Milton, Amy L. – Learning & Memory, 2020
In obsessive-compulsive disorder (OCD), functional behaviors such as checking that a door is locked become dysfunctional, maladaptive, and debilitating. However, it is currently unknown how aversive and appetitive motivations interact to produce functional and dysfunctional behavior in OCD. Here we show a double dissociation in the effects of…
Descriptors: Animal Behavior, Cues, Task Analysis, Punishment
Yu, Dinghui; Tan, Ying; Chakraborty, Molee; Tomchik, Seth; Davis, Ronald L. – Learning & Memory, 2018
The evolutionarily conserved Elongator Complex associates with RNA polymerase II for transcriptional elongation. Elp3 is the catalytic subunit, contains histone acetyltransferase activity, and is associated with neurodegeneration in humans. Elp1 is a scaffolding subunit and when mutated causes familial dysautonomia. Here, we show that…
Descriptors: Olfactory Perception, Animals, Genetics, Memory
Chung, Ain; Dahan, Nessy; Alarcon, Juan Marcos; Fenton, André A. – Learning & Memory, 2017
Nonprotein coding dendritic BC1 RNA regulates translation of mRNAs in neurons. We examined two lines of BC1 knockout mice and report that loss of BC1 RNA exaggerates group I mGluR-stimulated LTD of the Schaffer collateral synapse, with one of the lines showing a much more enhanced DHPG-induced LTD than the other. When the animals were given the…
Descriptors: Memory, Brain Hemisphere Functions, Biochemistry, Animals
Reichelt, Amy C.; Killcross, Simon; Hambly, Luke D.; Morris, Margaret J.; Westbrook, R. Fred – Learning & Memory, 2015
In this study we sought to determine the effect of daily sucrose consumption in young rats on their subsequent performance in tasks that involve the prefrontal cortex and hippocampus. High levels of sugar consumption have been associated with the development of obesity, however less is known about how sugar consumption influences behavioral…
Descriptors: Adolescents, Animals, Task Analysis, Brain Hemisphere Functions
Olsen, Ditte; Kaas, Mathias; Schwartz, Ole; Nykjaer, Anders; Glerup, Simon – Learning & Memory, 2013
BDNF-induced signaling is essential for the development of the central nervous system and critical for plasticity in adults. Mature BDNF signals through TrkB, while its precursor proBDNF employs p75[superscript NTR], resulting in activation of signaling cascades with opposite effects on neuronal survival, growth cone decisions, and synaptic…
Descriptors: Anxiety, Fear, Genetics, Animals
Bisaz, Reto; Boadas-Vaello, Pere; Genoux, David; Sandi, Carmen – Learning & Memory, 2013
Most of the mechanisms involved in neural plasticity support cognition, and aging has a considerable effect on some of these processes. The neural cell adhesion molecule (NCAM) of the immunoglobulin superfamily plays a pivotal role in structural and functional plasticity and is required to modulate cognitive and emotional behaviors. However,…
Descriptors: Memory, Animals, Memorization, Age
Martel, Guillaume; Hevi, Charles; Friebely, Olivia; Baybutt, Trevor; Shumyatsky, Gleb P. – Learning & Memory, 2010
Synaptically released Zn[superscript 2+] is a potential modulator of neurotransmission and synaptic plasticity in fear-conditioning pathways. Zinc transporter 3 (ZnT3) knock-out (KO) mice are well suited to test the role of zinc in learned fear, because ZnT3 is colocalized with synaptic zinc, responsible for its transport to synaptic vesicles,…
Descriptors: Conditioning, Memory, Fear, Brain Hemisphere Functions
Labrie, Viviane; Duffy, Steven; Wang, Wei; Barger, Steven W.; Baker, Glen B.; Roder, John C. – Learning & Memory, 2009
Activation of the N-methyl-d-aspartate receptor (NMDAR) glycine site has been shown to accelerate adaptive forms of learning that may benefit psychopathologies involving cognitive and perseverative disturbances. In this study, the effects of increasing the brain levels of the endogenous NMDAR glycine site agonist D-serine, through the genetic…
Descriptors: Animals, Schizophrenia, Genetics, Memory
Viosca, Jose; Malleret, Gael; Bourtchouladze, Rusiko; Benito, Eva; Vronskava, Svetlana; Kandel, Eric R.; Barco, Angel – Learning & Memory, 2009
The activation of cAMP-responsive element-binding protein (CREB)-dependent gene expression is thought to be critical for the formation of different types of long-term memory. To explore the consequences of chronic enhancement of CREB function on spatial memory in mammals, we examined spatial navigation in bitransgenic mice that express in a…
Descriptors: Animals, Long Term Memory, Spatial Ability, Brain
Removal of S6K1 and S6K2 Leads to Divergent Alterations in Learning, Memory, and Synaptic Plasticity
Antion, Marcia D.; Merhav, Maayan; Hoeffer, Charles A.; Reis, Gerald; Kozma, Sara C.; Thomas, George; Schuman Erin M.; Rosenblum, Kobi; Klann, Eric – Learning & Memory, 2008
Protein synthesis is required for the expression of enduring memories and long-lasting synaptic plasticity. During cellular proliferation and growth, S6 kinases (S6Ks) are activated and coordinate the synthesis of de novo proteins. We hypothesized that protein synthesis mediated by S6Ks is critical for the manifestation of learning, memory, and…
Descriptors: Animals, Memory, Biology, Fear
Brightwell, Jennifer J.; Smith, Clayton A.; Neve, Rachael L.; Colombo, Paul J. – Learning & Memory, 2007
Extensive research has shown that the hippocampus is necessary for consolidation of long-term spatial memory in rodents. We reported previously that rats using a place strategy to solve a cross maze task showed sustained phosphorylation of hippocampus cyclic AMP response element-binding protein (CREB), a transcription factor implicated in…
Descriptors: Short Term Memory, Long Term Memory, Learning Processes, Spatial Ability
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
Rossato, Janine I.; Medina, Jorge H.; Izquierdo, Ivan; Cammarota, Martin; Bevilaqua, Lia R. M. – Learning & Memory, 2006
Nonreinforced retrieval can cause extinction and/or reconsolidation, two processes that affect subsequent retrieval in opposite ways. Using the Morris water maze task we show that, in the rat, repeated nonreinforced expression of spatial memory causes extinction, which is unaffected by inhibition of protein synthesis within the CA1 region of the…
Descriptors: Memory, Genetics, Inhibition, Spatial Ability
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