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https://www.readbyqxmd.com/read/28530428/short-term-memory-and-long-term-memory-are-still-different
#1
Dennis Norris
A commonly expressed view is that short-term memory (STM) is nothing more than activated long-term memory. If true, this would overturn a central tenet of cognitive psychology-the idea that there are functionally and neurobiologically distinct short- and long-term stores. Here I present an updated case for a separation between short- and long-term stores, focusing on the computational demands placed on any STM system. STM must support memory for previously unencountered information, the storage of multiple tokens of the same type, and variable binding...
May 22, 2017: Psychological Bulletin
https://www.readbyqxmd.com/read/28528080/toxicological-aspects-of-interesterified-fat-brain-damages-in-rats
#2
Lívia Ferraz D'avila, Verônica Tironi Dias, Luciana Taschetto Vey, Laura Hautrive Milanesi, Karine Roversi, Tatiana Emanuelli, Marilise Escobar Bürger, Fabíola Trevizol
In recent years, interesterified fat (IF) has been used to replace hydrogenated vegetable fat (HVF), rich in trans isomers, being found in processed foods. Studies involving IF have shown deleterious influences on the metabolic system, similarly to HVF, whereas no studies regarding its influence on the central nervous system (CNS) were performed. Rats from first generation born and maintained under supplementation (3g/Kg, p.o.) of soybean-oil or IF until adulthood were assessed on memory, biochemical and molecular markers in the hippocampus...
May 17, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28527907/behavioral-and-cognitive-impact-of-early-life-stress-insights-from-an-animal-model
#3
Hesong Liu, Fatin Atrooz, Ankita Salvi, Samina Salim
BACKGROUND: Children subjected to traumatic events during childhood are reported to exhibit behavioral and cognitive deficits later in life, often leading to post-traumatic stress disorder (PTSD) and major depression. Interestingly, some children continue to remain normal despite being exposed to the same risk factors. These trauma-related behavioral and cognitive profiles across different stages of life are not well understood. Animal studies can offer useful insights. OBJECTIVE: The goal of this study was to determine the impact of early life exposure to traumatic events on behavioral and cognitive profile in rats by tracking the behavior of each rat at different ages...
May 17, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28525754/regulated-intron-removal-integrates-motivational-state-and-experience
#4
Jason Gill, Younshim Park, J P McGinnis, Consuelo Perez-Sanchez, Marco Blanchette, Kausik Si
Myriad experiences produce transient memory, yet, contingent on the internal state of the organism and the saliency of the experience, only some memories persist over time. How experience and internal state influence the duration of memory at the molecular level remains unknown. A self-assembled aggregated state of Drosophila Orb2A protein is required specifically for long-lasting memory. We report that in the adult fly brain the mRNA encoding Orb2A protein exists in an unspliced non-protein-coding form. The convergence of experience and internal drive transiently increases the spliced protein-coding Orb2A mRNA...
May 18, 2017: Cell
https://www.readbyqxmd.com/read/28525629/the-association-of-perceived-memory-loss-with-osteoarthritis-and-related-joint-pain-in-a-large-appalachian-population
#5
Kim E Innes, Usha Sambamoorthi
Objective. : Previous studies have documented memory impairment in several chronic pain syndromes. However, the potential link between memory loss and osteoarthritis (OA), the second most common cause of chronic pain, remains little explored. In this cross-sectional study, we examine the association of perceived memory loss to OA and assess the potential mediating influence of sleep and mood disturbance in a large Appalachian population. Design.:  Cross-sectional...
May 19, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28523466/recognition-induced-forgetting-does-not-occur-for-temporally-grouped-objects-unless-they-are-semantically-related
#6
Ashleigh M Maxcey, Hannah Glenn, Elisabeth Stansberry
Recent evidence has shown that practice recognizing certain objects hurts memories of objects from the same category, a phenomenon called recognition-induced forgetting. In all previous studies of this effect, the objects have been related by semantic category (e.g., instances of vases). However, the relationship between objects in many real-world visual situations stresses temporal grouping rather than semantic relations (e.g., a weapon and getaway car at a crime scene), and temporal grouping is thought to cluster items in models of long-term memory...
May 18, 2017: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/28515306/intermediate-term-memory-as-a-bridge-between-working-and-long-term-memory
#7
Jan Kamiński
No abstract text is available yet for this article.
May 17, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28514064/brain-inspired-photonic-neuromorphic-devices-using-photodynamic-amorphous-oxide-semiconductors-and-their-persistent-photoconductivity
#8
Minkyung Lee, Woobin Lee, Seungbeom Choi, Jeong-Wan Jo, Jaekyun Kim, Sung Kyu Park, Yong-Hoon Kim
The combination of a neuromorphic architecture and photonic computing may open up a new era for computational systems owing to the possibility of attaining high bandwidths and the low-computation-power requirements. Here, the demonstration of photonic neuromorphic devices based on amorphous oxide semiconductors (AOSs) that mimic major synaptic functions, such as short-term memory/long-term memory, spike-timing-dependent plasticity, and neural facilitation, is reported. The synaptic functions are successfully emulated using the inherent persistent photoconductivity (PPC) characteristic of AOSs...
May 17, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28510313/categorization-and-theoretical-comparison-of-quantitative-methods-for-assessing-qt-rr-hysteresis
#9
REVIEW
Hugo Gravel, Daniel Curnier, Nagib Dahdah, Vincent Jacquemet
BACKGROUND: In the human electrocardiogram, there is a lag of adaptation of the QT interval to heart rate changes, usually termed QT/RR hysteresis (QT-hys). Subject-specific quantifiers of QT-hys have been proposed as potential biomarkers, but there is no consensus on the choice of the quantifier. METHODS: A comprehensive literature search was conducted to identify original articles reporting quantifiers of repolarization hysteresis from the surface ECG in humans...
May 16, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28507513/appetitive-olfactory-learning-and-long-term-associative-memory-in-caenorhabditis-elegans
#10
Saori Nishijima, Ichiro N Maruyama
Because of the relative simplicity of its nervous system, Caenorhabditis elegans is a useful model organism to study learning and memory at cellular and molecular levels. For appetitive conditioning in C. elegans, food has exclusively been used as an unconditioned stimulus (US). It may be difficult to analyze neuronal circuits for associative memory since food is a multimodal combination of olfactory, gustatory, and mechanical stimuli. Here, we report classical appetitive conditioning and associative memory in C...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28504254/neural-circuits-for-long-term-water-reward-memory-processing-in-thirsty-drosophila
#11
Wei-Huan Shyu, Tai-Hsiang Chiu, Meng-Hsuan Chiang, Yu-Chin Cheng, Ya-Lun Tsai, Tsai-Feng Fu, Tony Wu, Chia-Lin Wu
The intake of water is important for the survival of all animals and drinking water can be used as a reward in thirsty animals. Here we found that thirsty Drosophila melanogaster can associate drinking water with an odour to form a protein-synthesis-dependent water-reward long-term memory (LTM). Furthermore, we found that the reinforcement of LTM requires water-responsive dopaminergic neurons projecting to the restricted region of mushroom body (MB) β' lobe, which are different from the neurons required for the reinforcement of learning and short-term memory (STM)...
May 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28503670/encoding-of-contextual-fear-memory-requires-de-novo-proteins-in-the-prelimbic-cortex
#12
Valerio Rizzo, Khalid Touzani, Bindu L Raveendra, Supriya Swarnkar, Joan Lora, Beena M Kadakkuzha, Xin-An Liu, Chao Zhang, Doron Betel, Robert W Stackman, Sathyanarayanan V Puthanveettil
BACKGROUND: Despite our understanding of the significance of the prefrontal cortex in the consolidation of long-term memories (LTM), its role in the encoding of LTM remains elusive. Here we investigated the role of new protein synthesis in the mouse medial prefrontal cortex (mPFC) in encoding contextual fear memory. METHODS: Because a change in the association of mRNAs to polyribosomes is an indicator of new protein synthesis, we assessed the changes in polyribosome-associated mRNAs in the mPFC following contextual fear conditioning (CFC) in the mouse...
March 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28501671/multifunctional-liposomes-delay-phenotype-progression-and-prevent-memory-impairment-in-a-presymptomatic-stage-mouse-model-of-alzheimer-disease
#13
Simona Mancini, Claudia Balducci, Edoardo Micotti, Daniele Tolomeo, Gianluigi Forloni, Massimo Masserini, Francesca Re
The failure of clinical trials largely focused on mild to moderate stages of Alzheimer disease has suggested to the scientific community that the effectiveness of Amyloid-β (Aβ)-centered treatments should be evaluated starting as early as possible, well before irreversible brain damage has occurred. Accordingly, also the preclinical development of new therapies should be carried out taking into account this suggestion. In the present investigation we evaluated the efficacy of a treatment with liposomes multifunctionalized for crossing the blood-brain barrier and targeting Aβ, carried out on young APP/PS1 Tg mice, taken as a model of pre-symptomatic disease stage...
May 10, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28495311/an-update-on-memory-reconsolidation-updating
#14
REVIEW
Jonathan L C Lee, Karim Nader, Daniela Schiller
The reactivation of a stored memory in the brain can make the memory transiently labile. During the time it takes for the memory to restabilize (reconsolidate) the memory can either be reduced by an amnesic agent or enhanced by memory enhancers. The change in memory expression is related to changes in the brain correlates of long-term memory. Many have suggested that such retrieval-induced plasticity is ideally placed to enable memories to be updated with new information. This hypothesis has been tested experimentally, with a translational perspective, by attempts to update maladaptive memories to reduce their problematic impact...
May 8, 2017: Trends in Cognitive Sciences
https://www.readbyqxmd.com/read/28490551/selective-impact-of-disease-on-short-term-and-long-term-components-of-self-reported-memory-a-population-based-hunt-study
#15
Ove Almkvist, Ole Bosnes, Ingunn Bosnes, Eystein Stordal
BACKGROUND: Subjective memory is commonly considered to be a unidimensional measure. However, theories of performance-based memory suggest that subjective memory could be divided into more than one dimension. OBJECTIVE: To divide subjective memory into theoretically related components of memory and explore the relationship to disease. METHODS: In this study, various aspects of self-reported memory were studied with respect to demographics and diseases in the third wave of the HUNT epidemiological study in middle Norway...
May 9, 2017: BMJ Open
https://www.readbyqxmd.com/read/28484948/enhanced-recognition-of-memorable-pictures-in-ultra-fast-rsvp
#16
Nico Broers, Mary C Potter, Mark R Nieuwenstein
Long-term recognition memory for some pictures is consistently better than for others (Isola, Xiao, Parikh, Torralba, & Oliva, IEEE Transaction on Pattern Analysis and Machine Intelligence (PAMI), 36(7), 1469-1482, 2014). Here, we investigated whether pictures found to be memorable in a long-term memory test are also perceived more easily when presented in ultra-rapid RSVP. Participants viewed 6 pictures they had never seen before that were presented for 13 to 360 ms per picture in a rapid serial visual presentation (RSVP) sequence...
May 8, 2017: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/28482744/accelerated-long-term-forgetting-is-not-epilepsy-specific-evidence-from-childhood-traumatic-brain-injury
#17
Suncica Lah, Carly Black, Michael Gascoigne, Chloe Gott, Adrienne Epps, Louise Parry
Accelerated long-term forgetting (ALF) is characterised by adequate recall after short, but not long delays. ALF is not detected by standardised neuropsychological memory tests. Currently, the prevailing conceptualisation of ALF is of a temporal-lobe seizure related phenomenon. Nevertheless, Mayes and colleagues (2003) proposed that ALF may arise when any of the components of the brain network involved in long-term memory formation, or their interaction is disrupted. This disruption does not have to be caused by temporal lobe seizures for ALF to occur...
May 8, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28481056/the-tumor-promoter-activated-protein-kinase-cs-are-a-system-for-regulating-filopodia
#18
Carol A Heckman, Pratima Pandey, Marilyn L Cayer, Tania Biswas, Zhong-Yin Zhang, Nancy S Boudreau
Different protein kinase C (PKC) isoforms have distinct roles in regulating cell functions. The conventional (α, β, γ) and novel (δ, ε, η, θ) classes are targets of phorbol ester tumor promoters, which are surrogates of endogenous second messenger, diacylglycerol. The promoter-stimulated disappearance of filopodia was investigated by use of blocking peptides (BPs) that inhibit PKC maturation and/or docking. Filopodia were partially rescued by a peptide representing PKC ε hydrophobic sequence, but also by a myristoylated PKC α/β pseudosubstrate sequence, and an inhibitor of T-cell protein tyrosine phosphatase (TC-PTP)...
May 8, 2017: Cytoskeleton
https://www.readbyqxmd.com/read/28480863/effect-of-arsenic-exposure-on-behavior-of-rats-of-various-age-groups
#19
T Bikashvili, T Lordkipanidze, N Gogichaishvili, N Pochkhidze
Arsenic is ranked first among toxicants posing a significant potential threat to human health based on known or suspected toxicity. Recent animal studies suggest that the brain is the major target of arsenic exposure. The present study demonstrates the effect of Arsenic compounds on behavior changes in different age (young and adult) groups of rats. In order to study anxiety behavior, learning and memory processes we used open field, elevated plus maze, spontaneous alteration behavior and multi-branched maze tests...
March 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28479798/impairments-in-quality-of-life-and-cognitive-functions-in-long-term-survivors-of-glioblastoma
#20
Chirag Solanki, Divya Sadana, Arivazhagan Arimappamagan, K V L N Rao, Jamuna Rajeswaran, D K Subbakrishna, Vani Santosh, Paritosh Pandey
BACKGROUND: The incidence of long-term survival in glioblastoma (GBM), i.e., >3 years, ranges from 3% to 5%. Although extensive research is performed in novel therapies for prolonging survival, there is a scarcity of research focusing on the impact of tumor and treatment on cognitive, psychological, and social status of survivors. This study is an attempt to look into this poorly addressed important issue. MATERIALS AND METHODS: Nine patients (six adults and three children) with GBM who had survived >3 years were included in the study...
April 2017: Journal of Neurosciences in Rural Practice
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