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Showing 1 to 15 of 166 results Save | Export
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Samifanni, Rojina; Zhao, Mudi; Cruz-Sanchez, Arely; Satheesh, Agarsh; Mumtaz, Unza; Arruda-Carvalho, Maithe – Learning & Memory, 2021
The ability to generate memories that persist throughout a lifetime (that is, memory persistence) emerges in early development across species. Although it has been shown that persistent fear memories emerge between late infancy and adolescence in mice, it is unclear exactly when this transition takes place, and whether two major fear conditioning…
Descriptors: Memory, Animals, Fear, Conditioning
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Xiang, Wenxi; Li, Tingting; Gao, Tianhang; Wang, Bin – Learning & Memory, 2019
The laterodorsal thalamic nucleus (LD) is believed to play roles in learning and memory, especially spatial tasks. However, the molecular mechanism that underlies the cognitive process in the LD remains unclear and needs to be investigated. So far, there is plenty of evidence indicating that plasticity has been in some of the cortical or…
Descriptors: Animals, Memory, Brain, Learning
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da Silva, Thiago Rodrigues; Sohn, Jeferson Machado Batista; Andreatini, Roberto; Stern, Cristina Aparecida – Learning & Memory, 2020
Reconsolidation is a time-limited process under which reactivated memory content can be modified. Works focused on studying reconsolidation mainly restrict intervention to the moments immediately after reactivation and to recently acquired memories. However, the brain areas activated during memory retrieval depend on when it was acquired, and it…
Descriptors: Brain, Brain Hemisphere Functions, Fear, Memory
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Bessières, Benjamin; Jia, Margaret; Travaglia, Alessio; Alberini, Cristina M. – Learning & Memory, 2019
The basolateral complex of amygdala (BLA) processes emotionally arousing aversive and rewarding experiences. The BLA is critical for acquisition and storage of threat-based memories and the modulation of the consolidation of arousing explicit memories, that is, the memories that are encoded and stored by the medial temporal lobe. In addition, in…
Descriptors: Brain, Animals, Memory, Individual Development
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Rotondo, Elena K.; Bieszczad, Kasia M. – Learning & Memory, 2020
Despite identical learning experiences, individuals differ in the memory formed of those experiences. Molecular mechanisms that control the neurophysiological bases of long-term memory formation might control how precisely the memory formed reflects the actually perceived experience. Memory formed with sensory specificity determines its utility…
Descriptors: Memory, Neurology, Physiology, Cognitive Processes
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Sandra Gattas; Heather A. Collett; Andrew E. Huff; Samantha D. Creighton; Siobhon E. Weber; Shoshana S. Buckhalter; Silas A. Manning; Hardeep S. Ryait; Bruce L. McNaughton; Boyer D. Winters – npj Science of Learning, 2022
Enrichment in rodents affects brain structure, improves behavioral performance, and is neuroprotective. Similarly, in humans, according to the cognitive reserve concept, enriched experience is functionally protective against neuropathology. Despite this parallel, the ability to translate rodent studies to human clinical situations is limited. This…
Descriptors: Animals, Cognitive Processes, Brain, Enrichment
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Duke, Corey G.; Kennedy, Andrew J.; Gavin, Cristin F.; Day, Jeremy J.; Sweatt, J. David – Learning & Memory, 2017
Using a hippocampus-dependent contextual threat learning and memory task, we report widespread, coordinated DNA methylation changes in CA1 hippocampus of Sprague-Dawley rats specific to threat learning at genes involved in synaptic transmission. Experience-dependent alternations in gene expression and DNA methylation were observed as early as 1 h…
Descriptors: Genetics, Animals, Memory, Brain
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Ammassari-Teule, Martine – Learning & Memory, 2020
Largely inspired from clinical concepts like brain reserve, cognitive reserve, and neural compensation, here we review data showing how neural circuits reorganize in presymptomatic and early symptomatic hAPP mice to maintain memory intact. By informing on molecular alterations and compensatory adaptations which take place in the brain before mice…
Descriptors: Brain, Cognitive Processes, Neurological Organization, Animals
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Hoffman, Janlyn R.; Brandwein, Nathan J.; Nguyen, Peter V. – Learning & Memory, 2019
Beta-adrenergic receptors ([beta]-ARs) prime hippocampal synapses to stabilize long-term potentiation (LTP). This "metaplasticity" can persist for 1-2 h after pharmacologic activation of [beta]-ARs. It requires activation of PKA (cAMP-dependent protein kinase) during [beta]-AR priming. A-kinase anchoring proteins (AKAPs) tether PKA to…
Descriptors: Animals, Science Experiments, Foreign Countries, Stimulation
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Wong, Edwin W.; Glasgow, Stephen D.; Trigiani, Lianne J.; Chitsaz, Daryan; Rymar, Vladimir; Sadikot, Abbas; Ruthazer, Edward S.; Hamel, Edith; Kennedy, Timothy E. – Learning & Memory, 2019
Netrin-1 was initially characterized as an axon guidance molecule that is essential for normal embryonic neural development; however, many types of neurons continue to express netrin-1 in the postnatal and adult mammalian brain. Netrin-1 and the netrin receptor DCC are both enriched at synapses. In the adult hippocampus, activity-dependent…
Descriptors: Spatial Ability, Memory, Adults, Brain
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Vedder, Lindsey C.; Savage, Lisa M. – Learning & Memory, 2017
Thiamine deficiency (TD), commonly associated with chronic alcoholism, leads to diencephalic damage, hippocampal dysfunction, and spatial learning and memory deficits. We show a decrease in the magnitude of long-term potentiation (LTP) and paired-pulse facilitation (PPF) at CA3-CA1 synapses, independent of sex, following diencephalic damage…
Descriptors: Brain, Animals, Nutrition, Neurological Impairments
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Yang, Qizong; Antonov, Igor; Castillejos, David; Nagaraj, Anagha; Bostwick, Caleb; Kohn, Andrea; Moroz, Leonid; Hawkins, Robert D. – Learning & Memory, 2018
Long-term but not short-term memory and synaptic plasticity in many brain areas require neurotrophin signaling, transcription, and epigenetic mechanisms including DNA methylation. However, it has been difficult to relate these cellular mechanisms directly to behavior because of the immense complexity of the mammalian brain. To address that…
Descriptors: Memory, Animals, Genetics, Brain
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Farah, Carole A.; Hastings, Margaret H.; Dunn, Tyler W.; Gong, Katrina; Baker-Andresen, Danay; Sossin, Wayne S. – Learning & Memory, 2017
Atypical PKM, a persistently active form of atypical PKC, is proposed to be a molecular memory trace, but there have been few examinations of the role of PKMs generated from other PKCs. We demonstrate that inhibitors used to inhibit PKMs generated from atypical PKCs are also effective inhibitors of other PKMs. In contrast, we demonstrate that…
Descriptors: Memory, Brain, Neurological Organization, Neurology
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Travaglia, Alessio; Steinmetz, Adam B.; Miranda, Janelle M.; Alberini, Christina M. – Learning & Memory, 2018
Episodic memories in early childhood are rapidly forgotten, a phenomenon that is associated with "infantile amnesia," the inability of adults to remember early-life experiences. We recently showed that early aversive contextual memory in infant rats, which is in fact rapidly forgotten, is actually not lost, as reminders presented later…
Descriptors: Animals, Geographic Location, Learning, Memory
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Leake, Jessica; Zinn, Raphael; Corbit, Laura; Vissel, Bryce – Learning & Memory, 2017
Rodents require a minimal time period to explore a context prior to footshock to display plateau-level context fear at test. To investigate whether this rapid fear plateau reflects complete memory formation within that short time-frame, we used the immediate-early gene product Arc as an indicator of hippocampal context memory formation-related…
Descriptors: Fear, Memory, Animals, Context Effect
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