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"Long term memory"

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https://www.readbyqxmd.com/read/28443005/waking-up-buried-memories-of-old-tv-programs
#1
Christelle Larzabal, Nadège Bacon-Macé, Sophie Muratot, Simon J Thorpe
Although it has been demonstrated that visual and auditory stimuli can be recalled decades after the initial exposure, previous studies have generally not ruled out the possibility that the material may have been seen or heard during the intervening period. Evidence shows that reactivations of a long-term memory trace play a role in its update and maintenance. In the case of remote or very long-term memories, it is most likely that these reactivations are triggered by the actual re-exposure to the stimulus...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28439808/timing-a-week-later-the-role-of-long-term-memory-in-temporal-preparation
#2
Rozemarijn M Mattiesing, Wouter Kruijne, Martijn Meeter, Sander A Los
Temporal preparation has been investigated extensively by manipulating the foreperiod, the interval between a warning stimulus and target stimulus requiring a speeded response. Although such research has revealed many effects of both the duration and distribution of foreperiods on reaction times, the underlying cognitive mechanism is still largely unknown. Here, we test a recent proposal that temporal preparation is driven by the retrieval of memory traces of past experiences from long-term memory rather than by knowledge about upcoming events...
April 24, 2017: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/28439227/requirement-of-nf-kappa-b-activation-in-different-mice-brain-areas-during-long-term-memory-consolidation-in-two-contextual-one-trial-tasks-with-opposing-valences
#3
Angeles Salles, Maria Del C Krawczyk, Mariano Blake, Arturo Romano, Mariano M Boccia, Ramiro Freudenthal
NF-kappa B is a transcription factor whose activation has been shown to be necessary for long-term memory consolidation in several species. NF-kappa B is activated and translocates to the nucleus of cells in a specific temporal window during consolidation. Our work focuses on a one trial learning tasks associated to the inhibitory avoidance (IA) setting. Mice were trained either receiving or not a footshock when entering a dark compartment (aversive vs. appetitive learning). Regardless of training condition (appetitive or aversive), latencies to step-through during testing were significantly different to those measured during training...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28435008/cortical-and-amygdalar-neuronal-ensembles-in-alcohol-seeking-drinking-and-withdrawal
#4
REVIEW
Olivier George, Bruce T Hope
Alcohol induces many alterations in the brain that are thought to contribute to alcohol addiction. Most of the known alterations are induced in all neurons of a brain area or all neurons of a given cell type, regardless of whether they were activated during behavior. While these alterations can have important modulatory effects on behavior, they cannot explain why animals respond specifically to alcohol-paired cues as opposed to all other non-paired cues, and evoke highly specific goal-directed learned responses in models of drug craving...
April 20, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28434990/role-of-circadian-rhythm-and-rem-sleep-for-memory-consolidation
#5
REVIEW
Zhengui Xia, Dan Storm
Although sleep is strongly implicated in memory consolidation, the molecular basis for the role of sleep in memory is not known. It has been established that the consolidation of hippocampus-dependent memory depends on the activation of the Erk1,2 MAP kinase (MAPK) pathway which activates de novo CRE-mediated transcription and translation, two processes required for memory consolidation pathway. The activation of MAPK during memory formation and its nuclear translocation both depend upon cAMP signals generated by the calmodulin-stimulated adenylyl cyclases, type 1 and type 8 (AC1 and AC8)...
April 20, 2017: Neuroscience Research
https://www.readbyqxmd.com/read/28433816/l-carnitine-prevents-memory-impairment-induced-by-chronic-rem-sleep-deprivation
#6
Karem H Alzoubi, Abeer M Rababah, Amani Owaisi, Omar F Khabour
Sleep deprivation (SD) negatively impacts memory, which was related to oxidative stress induced damage. L-carnitine is a naturally occurring compound, synthesized endogenously in mammalian species and known to possess antioxidant properties. In this study, the effect of L-carnitine on learning and memory impairment induced by rapid eye movement sleep (REM-sleep) deprivation was investigated. REM-sleep deprivation was induced using modified multiple platform model (8hrs/day, for 6 weeks). Simultaneously, L-carnitine was administered (300mg/kg/day) intraperitoneally for 6 weeks...
April 19, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28432141/the-spacing-effect-for-structural-synaptic-plasticity-provides-specificity-and-precision-in-plastic-changes
#7
Martin A San, L Rela, B D Gelb, M R Pagani
In contrast to trials of training without intervals (massed training), training trials spaced over time (spaced training) induce a more persistent memory identified as long-term memory (LTM). This phenomenon known as "the spacing effect for memory" is poorly understood. LTM is supported by structural synaptic plasticity; however, how synapses integrate spaced stimuli remains elusive. Here, we analyzed events of structural synaptic plasticity at the single synapse level after distinct patterns of stimulation in motoneurons of Drosophila We found that the spacing effect is a phenomenon detected at synaptic level, which determine the specificity and the precision in structural synaptic plasticity...
April 21, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28430604/signal-transducing-adaptor-protein-2-promotes-generation-of-functional-long-term-memory-cd8-t-cells-by-preventing-terminal-effector-differentiation
#8
Daisuke Muraoka, Naohiro Seo, Tae Hayashi, Chisaki Hyuga-Amaike, Kana Okamori, Isao Tawara, Naozumi Harada, Hiroshi Shiku
Long-surviving memory CD8+ T cells generated by stimulation with appropriate tumor-associated antigens are the most aggressive and persistent tumoricidal effectors. In this event of memory CD8+ T cell development, the signal transducer and activator of transcription (STAT) proteins function as the crucial intracellular signaling molecules, but the regulatory mechanism of STATs in CD8+ T cells is not fully understood. In this study, we report for the first time, by using murine vaccination models, that signal-transducing adaptor protein-2 (STAP2) maintains the cytotoxicity of long-lived memory CD8+ T cells by controlling a STAT3/suppressor of cytokine signaling 3 (SOCS3) cascade...
February 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28430039/distractor-resistant-stm-is-supported-by-transient-changes-in-neural-stimulus-representations
#9
Jan Derrfuss, Matthias Ekman, Michael Hanke, Marc Tittgemeyer, Christian J Fiebach
Goal-directed behavior in a complex world requires the maintenance of goal-relevant information despite multiple sources of distraction. However, the brain mechanisms underlying distractor-resistant working or STM are not fully understood. Although early single-unit recordings in monkeys and fMRI studies in humans pointed to an involvement of lateral prefrontal cortices, more recent studies highlighted the importance of posterior cortices for the active maintenance of visual information also in the presence of distraction...
April 21, 2017: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/28429887/effects-of-aluminium-on-long-term-memory-in-rats-and-on-sirt1-mediating-the-transcription-of-creb-dependent-gene-in-hippocampus
#10
Dongying Yan, Cuihong Jin, Yang Cao, Lulu Wang, Xiaobo Lu, Jinghua Yang, Shengwen Wu, Yuan Cai
Epidemiological investigations have shown that aluminium (Al) is an important neurotoxicant which can be absorbed by organisms via various routes. Previous studies have confirmed that exposure to Al could cause neurodegenerative diseases, decline CREB phosphorylation and then down-regulate the transcription and protein expression of its target genes including BDNF. However, recent studies revealed that CREB activation alone was far from enough to activate the expression of long-term memory (LTM) related genes; there might be other regulatory factors involved in this process...
April 21, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28424596/non-interfering-effects-of-active-post-encoding-tasks-on-episodic-memory-consolidation-in-humans
#11
Samarth Varma, Atsuko Takashima, Sander Krewinkel, Maaike van Kooten, Lily Fu, W Pieter Medendorp, Roy P C Kessels, Sander M Daselaar
So far, studies that investigated interference effects of post-learning processes on episodic memory consolidation in humans have used tasks involving only complex and meaningful information. Such tasks require reallocation of general or encoding-specific resources away from consolidation-relevant activities. The possibility that interference can be elicited using a task that heavily taxes our limited brain resources, but has low semantic and hippocampal related long-term memory processing demands, has never been tested...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28416631/mutation-of-neuron-specific-chromatin-remodeling-subunit-baf53b-rescue-of-plasticity-and-memory-by-manipulating-actin-remodeling
#12
Annie Vogel Ciernia, Enikö A Kramár, Dina P Matheos, Robbert Havekes, Thekla J Hemstedt, Christophe N Magnan, Keith Sakata, Ashley Tran, Soraya Azzawi, Alberto Lopez, Richard Dang, Weisheng Wang, Brian Trieu, Joyce Tong, Ruth M Barrett, Rebecca J Post, Pierre Baldi, Ted Abel, Gary Lynch, Marcelo A Wood
Recent human exome-sequencing studies have implicated polymorphic Brg1-associated factor (BAF) complexes (mammalian SWI/SNF chromatin remodeling complexes) in several intellectual disabilities and cognitive disorders, including autism. However, it remains unclear how mutations in BAF complexes result in impaired cognitive function. Post-mitotic neurons express a neuron-specific assembly, nBAF, characterized by the neuron-specific subunit BAF53b. Subdomain 2 of BAF53b is essential for the differentiation of neuronal precursor cells into neurons...
May 2017: Learning & Memory
https://www.readbyqxmd.com/read/28416593/two-components-of-aversive-memory-in-drosophila-anesthesia-sensitive-and-anesthesia-resistant-memory-require-distinct-domains-within-the-rgk1-small-gtpase
#13
Satoshi Murakami, Maki Minami-Ohtsubo, Ryuichiro Nakato, Katsuhiko Shirahige, Tetsuya Tabata
For aversive olfactory memory in Drosophila, multiple components have been identified that exhibit different stabilities. These components have been defined by behavioral and genetic studies, and genes specifically required for a specific component have also been identified. Intermediate-term memory generated after single cycle conditioning is divided into anesthesia-sensitive memory (ASM) and anesthesia-resistant memory (ARM), with the latter being more stable. We determined that the ASM and ARM pathways converged on the Rgk1 small GTPase and that the N-terminal domain-deleted Rgk1 was sufficient for ASM formation, whereas the full-length form was required for ARM formation...
April 17, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28414249/psychological-distress-is-associated-with-altered-cognitive-functioning-in-family-caregivers-of-patients-with-disorders-of-consciousness
#14
P Moretta, O Masotta, E Crispino, G Castronovo, S Ruvolo, C Montalbano, V Loreto, L Trojano, A Estraneo
OBJECTIVES: To analyse the possible presence of reduced cognitive efficiency in family caregivers of patients with prolonged disorders of consciousness (DOC). SUBJECTS: The participants were 27 caregivers of 25 patients with DOC admitted to the severe brain injury units of the ICS Maugeri, Institutes of Telese Terme and Sciacca, Italy. METHODS: We examined cognitive functions such as short- and long-term memory, executive functions and attention by means of standardized tests...
April 17, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28414036/blunted-cortisol-response-to-acute-pre-learning-stress-prevents-misinformation-effect-in-a-forced-confabulation-paradigm
#15
Phillip R Zoladz, Chelsea E Cadle, Alison M Dailey, Miranda K Fiely, David M Peters, Hannah E Nagle, Brianne E Mosley, Amanda R Scharf, Callie M Brown, Tessa J Duffy, McKenna B Earley, Boyd R Rorabaugh, Kristie E Payment
Research examining the effects of stress on false memory formation has been equivocal, partly because of the complex nature of stress-memory interactions. A major factor influencing stress effects on learning is the timing of stress relative to encoding. Previous work has shown that brief stressors administered immediately before learning enhance long-term memory. Thus, we predicted that brief stress immediately before learning would decrease participants' susceptibility to subsequent misinformation and reduce false memory formation...
April 21, 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/28406685/individual-differences-in-working-memory-capacity-predict-learned-control-over-attentional-capture
#16
Matthew K Robison, Nash Unsworth
Although individual differences in working memory capacity (WMC) typically predict susceptibility to attentional capture in various paradigms (e.g., Stroop, antisaccade, flankers), it sometimes fails to correlate with the magnitude of attentional capture effects in visual search (e.g., Stokes, 2016), which is 1 of the most frequently studied tasks to study capture (Theeuwes, 2010). But some studies have shown that search modes can mitigate the effects of attentional capture (Leber & Egeth, 2006). Therefore, the present study examined whether or not the relationship between WMC and attentional capture changes as a function of the search modes available...
April 13, 2017: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/28400283/the-role-of-glun2b-containing-nmda-receptors-in-short-and-long-term-fear-recall
#17
Eva Mikics, Mate Toth, Laszlo Biro, Biborka Bruzsik, Boglarka Nagy, Jozsef Haller
N-methyl-d-aspartate (NMDA) receptors are crucial synaptic elements in long-term memory formation, including the associative learning of fearful events. Although NMDA blockers were consistently shown to inhibit fear memory acquisition and recall, the clinical use of general NMDA blockers is hampered by their side effects. Recent studies revealed significant heterogeneity in the distribution and neurophysiological characteristics of NMDA receptors with different GluN2 (NR2) subunit composition, which may have differential role in fear learning and recall...
April 8, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28398234/down-regulated-drebrin-aggravates-cognitive-impairments-in-a-mouse-model-of-alzheimer-s-disease
#18
Yan Liu, Yanfeng Xu, Ling Zhang, Lan Huang, Pin Yu, Hua Zhu, Wei Deng, Chuan Qin
The developmentally regulated brain protein drebrin (Dbn) is a functional protein involved with long-term memory formation and is widely distributed in brain neurons, especially in the dendritic spines. A noticeable decline of this protein has been found in the hippocampus and cortex of patients with Alzheimer's disease (AD), yet the relationship between Dbn and AD has not been fully understood. In the present study, we examined how down-regulation of Dbn impacts the progression of AD in experimental animals...
April 11, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28397524/effects-of-oxygen-enriched-air-on-cognitive-performance-during-scuba-diving-an-open-water-study
#19
Anne-Kathrin Brebeck, Andreas Deussen, Henning Schmitz-Peiffer, Ursula Range, Costantino Balestra, Sinclair Cleveland, Jochen D Schipke
Backround: Nitrogen narcosis impairs cognitive function, a fact relevant during SCUBA-diving. Oxygen-enriched air (nitrox) became popular in recreational diving, while evidence of its advantages over air is limited. AIM: Compare effects of nitrox28 and air on two psychometric tests. METHODS: In this prospective, double-blind, open-water study, 108 advanced divers (38 females) were randomized to an air or a nitrox-group for a 60-min dive to 24 m salt water. Breathing gas effects on cognitive performance were assessed during the dive using a short- and long-term memory test and a number connection test...
April 11, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28394158/long-term-memory-biases-auditory-spatial-attention
#20
Jacqueline F Zimmermann, Morris Moscovitch, Claude Alain
Long-term memory (LTM) has been shown to bias attention to a previously learned visual target location. Here, we examined whether memory-predicted spatial location can facilitate the detection of a faint pure tone target embedded in real world audio clips (e.g., soundtrack of a restaurant). During an initial familiarization task, participants heard audio clips, some of which included a lateralized target (p = 50%). On each trial participants indicated whether the target was presented from the left, right, or was absent...
April 10, 2017: Journal of Experimental Psychology. Learning, Memory, and Cognition
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