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Remote Memory

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https://www.readbyqxmd.com/read/28316870/dural-arteriovenous-fistula-manifested-as-rapid-progressive-dementia-successfully-treated-by-endovascular-embolization-only
#1
Heewon Hwang, Yun Kyung La, Min Seok Baek, Kyoungwon Baik, Sang Hyun Suh, Won-Joo Kim
A 43-year-old male presented with daytime sleepiness at work and indifferent behavior like never before. Two weeks prior to hospital admission, he had episodic memory loss with well preserved remote memory. Brain MRI showed a dural arteriovenous fistula (DAVF) in the right lateral transverse sinus with a bilateral thalamic venous infarction. Cerebral angiography confirmed a right transverse sigmoid dural arteriovenous fistula with a feeding artery of the right occipital artery and left posterior meningeal artery...
March 2017: Neurointervention
https://www.readbyqxmd.com/read/28297271/evaluation-of-digital-radiography-practice-using-exposure-index-tracking
#2
Alexander W Scott, Yifang Zhou, Janet Allahverdian, Jessica L Nute, Christina Lee
Some digital radiography (DR) detectors and software allow for remote download of exam statistics, including image reject status, body part, projection, and exposure index (EI). The ability to have automated data collection from multiple DR units is conducive to a quality control (QC) program monitoring institutional radiographic exposures. We have implemented such a QC program with the goal to identify outliers in machine radiation output and opportunities for improvement in radiation dose levels. We studied the QC records of four digital detectors in greater detail on a monthly basis for one year...
November 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28290135/spinal-cord-injury-impairs-neurogenesis-and-induces-glial-reactivity-in-the-hippocampus
#3
Ignacio Jure, Luciana Pietranera, Alejandro F De Nicola, Florencia Labombarda
The incorporation of newborn neurons with increased synaptic remodeling and activity-dependent plasticity in the dentate gyrus enhances hippocampal-dependent learning performances. Astrocytes and microglial cells are components of the neurogenic niche and regulate neurogenesis under normal and neurophatological conditions leading to functional consequences for learning and memory. Although cognitive impairments were reported in patients after spinal cord injury (SCI), only few studies have considered remote changes in brain structures which are not related with sensory and motor cortex...
March 13, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28288787/evolution-of-autobiographical-memory-impairments-in-alzheimer-s-disease-and-frontotemporal-dementia-a-longitudinal-neuroimaging-study
#4
Muireann Irish, Ramon Landin-Romero, Annu Mothakunnel, Siddharth Ramanan, Sharpley Hsieh, John R Hodges, Olivier Piguet
Compromised autobiographical memory (ABM) retrieval is well established in dementia, attributable to degeneration of a core memory brain network. It remains unclear, however, how the progressive spread of atrophy with advancing disease severity impacts ABM retrieval across life epochs. To this end, we conducted a longitudinal study of recent and remote ABM in Alzheimer's disease (AD, n =11), and a frontotemporal lobar degeneration group (FTD, n =13) comprising 7 behavioral variant FTD and 6 semantic dementia patients, in comparison with 23 healthy older Controls...
March 10, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28277519/reading-and-writing-single-atom-magnets
#5
Fabian D Natterer, Kai Yang, William Paul, Philip Willke, Taeyoung Choi, Thomas Greber, Andreas J Heinrich, Christopher P Lutz
The single-atom bit represents the ultimate limit of the classical approach to high-density magnetic storage media. So far, the smallest individually addressable bistable magnetic bits have consisted of 3-12 atoms. Long magnetic relaxation times have been demonstrated for single lanthanide atoms in molecular magnets, for lanthanides diluted in bulk crystals, and recently for ensembles of holmium (Ho) atoms supported on magnesium oxide (MgO). These experiments suggest a path towards data storage at the atomic limit, but the way in which individual magnetic centres are accessed remains unclear...
March 8, 2017: Nature
https://www.readbyqxmd.com/read/28273777/remote-assessment-of-verbal-memory-in-ms-patients-using-the-california-verbal-learning-test
#6
Lisa F Barcellos, Kalliope H Bellesis, Ling Shen, Xiaorong Shao, Terrence Chinn, Seth Frndak, Allison Drake, Nandini Bakshi, Jackie Marcus, Catherine Schaefer, Ralph Hb Benedict
We used the California Verbal Learning Test, Second Edition (CVLT-II), one component of the Brief International Cognitive Assessment for Multiple Sclerosis (BICAMS), to determine feasibility of a remote assessment protocol. We compared telephone-administered CVLT-II data from MS patients to data acquired in person from an independent sample of patients and healthy controls. Mixed factor analyses of variance (ANOVAs) showed no significant differences between patient groups, but between-group effects comparing patients and healthy controls were significant...
February 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28269057/towards-real-time-qrs-feature-extraction-for-wearable-monitors
#7
Lukas Smital, Clifton Haider, Pavel Leinveber, Pavel Jurak, Barry Gilbert, David Holmes
The ability to generate computationally compact ECG analysis algorithms is of interest in the field of wearable physiologic monitors. Such remote monitors necessarily have limited on-board energy storage and therefore lack the computational power and physical memory often required for academic study of physiologic waveforms. Herein we evaluate a set of algorithms with markedly different computation and memory footprints useful in extracting QRS complexes from synthetically generated noisy and measured ECG signals...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28254465/spermidine-improves-the-persistence-of-reconsolidated-fear-memory-and-neural-differentiation-in-vitro-involvement-of-bdnf
#8
Cristiane Signor, Bruna Amanda Girardi, Arithane Lorena Wendel, Pâmella Karina Santana Frühauf, Micheli M Pillat, Henning Ulrich, Carlos F Mello, Maribel A Rubin
Putrescine, spermidine and spermine are organic cations implicated in learning, memory consolidation, reconsolidation and neurogenesis. These physiological processes are closely related, and convincing evidence indicates that neurogenesis is implicated both, in the establishment and maintenance of remote contextual fear memory. Although brain-derived neurotrophic factor (BDNF) is a key mediator involved in both neurogenesis and memory consolidation, effects of spermidine on persistence of memory after reactivation (reconsolidation) and possible involvement of BDNF have not been investigated...
February 22, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/28252103/long-term-ground-deformation-patterns-of-bucharest-using-multi-temporal-insar-and-multivariate-dynamic-analyses-a-possible-transpressional-system
#9
Iuliana Armaş, Diana A Mendes, Răzvan-Gabriel Popa, Mihaela Gheorghe, Diana Popovici
The aim of this exploratory research is to capture spatial evolution patterns in the Bucharest metropolitan area using sets of single polarised synthetic aperture radar (SAR) satellite data and multi-temporal radar interferometry. Three sets of SAR data acquired during the years 1992-2010 from ERS-1/-2 and ENVISAT, and 2011-2014 from TerraSAR-X satellites were used in conjunction with the Small Baseline Subset (SBAS) and persistent scatterers (PS) high-resolution multi-temporal interferometry (InSAR) techniques to provide maps of line-of-sight displacements...
March 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28227274/towards-real-time-qrs-feature-extraction-for-wearable-monitors
#10
Lukas Smital, Clifton Haider, Pavel Leinveber, Pavel Jurak, Barry Gilbert, David Holmes, Lukas Smital, Clifton Haider, Pavel Leinveber, Pavel Jurak, Barry Gilbert, David Holmes, Pavel Leinveber, Pavel Jurak, Lukas Smital, Clifton Haider, David Holmes, Barry Gilbert
The ability to generate computationally compact ECG analysis algorithms is of interest in the field of wearable physiologic monitors. Such remote monitors necessarily have limited on-board energy storage and therefore lack the computational power and physical memory often required for academic study of physiologic waveforms. Herein we evaluate a set of algorithms with markedly different computation and memory footprints useful in extracting QRS complexes from synthetically generated noisy and measured ECG signals...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28221714/photonic-devices-out-of-equilibrium-transient-memory-signal-propagation-and-sensing
#11
Thomas Heuser, Rémi Merindol, Sebastian Loescher, Aileen Klaus, Andreas Walther
Soft photonic materials are important for sensors, displays, or energy management and have become switchable under static equilibrium conditions by integration of responsive polymer features. The next step is to equip such materials with the ability for autonomously dynamic and self-regulating behavior, which would advance their functionality and application possibilities to new levels. Here, this study shows the system integration of a nonlinear, biocatalytic pH-feedback system with a pH-responsive block copolymer photonic gel, and demonstrates autonomous transient memories, remotely controlled signal propagation, and sensing...
February 21, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28213645/transcranial-direct-current-stimulation-modulates-neuronal-networks-in-attention-deficit-hyperactivity-disorder
#12
Anna Sotnikova, Cornelia Soff, Enzo Tagliazucchi, Katja Becker, Michael Siniatchkin
Anodal transcranial direct current stimulation (tDCS) of the prefrontal cortex has been repeatedly shown to improve working memory (WM). Since patients with attention deficit hyperactivity disorder (ADHD) are characterized by both underactivation of the prefrontal cortex and deficits in WM, the modulation of prefrontal activity with tDCS in ADHD patients may increase their WM performance as well as improve the activation and connectivity of the WM network. In the present study, this hypothesis was tested using a double-blind sham-controlled experimental design...
February 17, 2017: Brain Topography
https://www.readbyqxmd.com/read/28210216/flavor-dependent-retention-of-remote-food-preference-memory
#13
Aditya Singh, Suraj Kumar, Vikram Pal Singh, Asish Das, J Balaji
Social Transmission of Food Preference (STFP) is a single trial non-aversive learning task that is used for testing non-spatial memory. This task relies on an accurate estimate of a change in food preference of the animals following social demonstration of a novel flavor. Conventionally this is done by providing two flavors of powdered food and later estimating the amount of food consumed for each of these flavors in a defined period of time. This is achieved through a careful measurement of leftover food for each of these flavors...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28205585/neuronally-directed-effects-of-rxr-activation-in-a-mouse-model-of-alzheimer-s-disease
#14
M M Mariani, T Malm, R Lamb, T R Jay, L Neilson, B Casali, L Medarametla, G E Landreth
Alzheimer's disease (AD) is characterized by extensive neuron loss that accompanies profound impairments in memory and cognition. We examined the neuronally directed effects of the retinoid X receptor agonist bexarotene in an aggressive model of AD. We report that a two week treatment of 3.5 month old 5XFAD mice with bexarotene resulted in the clearance of intraneuronal amyloid deposits. Importantly, neuronal loss was attenuated by 44% in the subiculum in mice 4 months of age and 18% in layer V of the cortex in mice 8 months of age...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28176459/reconsolidation-induced-rescue-of-a-remote-fear-memory-blocked-by-an-early-cortical-inhibition-involvement-of-the-anterior-cingulate-cortex-and-the-mediation-by-the-thalamic-nucleus-reuniens
#15
Rodrigo O Sierra, Lizeth K Pedraza, Querusche K Zanona, Fabiana Santana, Flávia Z Boos, Ana P Crestani, Josué Haubrich, Lucas de Oliveira Alvares, Maria Elisa Calcagnotto, Jorge A Quillfeldt
Systems consolidation is a time-dependent reorganization process involving neocortical and hippocampal networks underlying memory storage and retrieval. The involvement of the hippocampus during acquisition is well described, however we know much less about the concomitant contribution of cortical activity levels to the formation of stable remote memories. Here, after a reversible pharmacological inhibition of the anterior cingulate cortex (ACC) during the acquisition of a contextual fear conditioning, retrieval of both recent and remote memories were impaired, an effect that was reverted by a single memory reactivation session 48h after training, through a destabilization-dependent mechanism interpreted as reconsolidation, that restored the normal course of systems consolidation in order to rescue a remote memory...
February 8, 2017: Hippocampus
https://www.readbyqxmd.com/read/28173964/sleep-deprivation-disrupts-the-contribution-of-the-hippocampus-to-the-formation-of-novel-lexical-associations
#16
Virginie Sterpenich, Leonardo Ceravolo, Sophie Schwartz
Sleep is involved in the mechanisms underlying memory consolidation and brain plasticity. Consolidation refers to a process through which labile memories are reorganized into more stable ones. An intriguing but often neglected question concerns how pre-existing knowledge is modified when new information enters memory, and whether sleep can influence this process. We investigated how nonword learning may modify the neural representations of closely-related existing words. We also tested whether sleep contributes to any such effect by comparing a group of participants who slept during the night following a first encoding session to a sleep deprived group...
April 2017: Brain and Language
https://www.readbyqxmd.com/read/28159532/a-cross-sectional-survey-of-the-access-of-older-people-in-the-scottish-highlands-to-general-medical-practices-community-pharmacies-and-prescription-medicines
#17
Gordon F Rushworth, Scott Cunningham, Sharon Pfleger, Jenny Hall, Derek Stewart
BACKGROUND: Access to medicines and healthcare is more problematic in remote and rural areas. OBJECTIVES: To quantify issues of access to general practitioners (GPs), community pharmacies and prescribed medicines in older people resident in the Scottish Highlands. METHODS: Anonymized questionnaires were mailed to a random sample of 2000 older people (≥60 years) resident in the Scottish Highlands. Questionnaire items were: access and convenience to GP and pharmacy services (10 items); prescribed medicines (13 items); attitudinal statements based on the Theoretical Domains Framework (12 items); quality of life (SF8, 8 items); and demographics (12 items)...
January 25, 2017: Research in Social & Administrative Pharmacy: RSAP
https://www.readbyqxmd.com/read/28156614/effect-of-discharge-to-subacute-rehabilitation-sar-on-hospitalized-patients-with-progressive-gastrointestinal-gi-cancer
#18
Anjali V Desai, Leonard Saltz
41 Background: SAR may be an alternative when hospice is declined. However, the outcomes of discharges to SAR in cancer patients with progressive (chemotherapy-refractory) disease are not known. We examined the characteristics and outcomes of patients with debility from progressive metastatic GI cancer who were discharged to SAR after an admission to our center. METHODS: An institutional electronic database was queried to identify patients of the GI medical oncology service of Memorial Sloan Kettering Cancer Center who had been discharged to a SAR facility...
October 9, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28128869/utility-reliability-sensitivity-and-validity-of-an-online-test-system-designed-to-monitor-changes-in-cognitive-function-in-clinical-trials
#19
Keith A Wesnes, Helen Brooker, Clive Ballard, Laura McCambridge, Robert Stenton, Anne Corbett
OBJECTIVE: The advent of long-term remotely conducted clinical trials requires assessments which can be administered online. This paper considers the utility, reliability, sensitivity and validity of an internet-based system for measuring changes in cognitive function which is being used in one such trial. METHODS: The Platform for Research Online to investigate Genetics and Cognition in Ageing is a 10-year longitudinal and entirely remote study launched in November 2015...
January 27, 2017: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28119307/asciigenome-a-command-line-genome-browser-for-console-terminals
#20
Dario Beraldi
MOTIVATION: Current genome browsers are designed to work via graphical user interfaces (GUIs), which, however intuitive, are not amenable to operate within console terminals and therefore are difficult to streamline or integrate in scripts. To circumvent these limitations, ASCIIGenome runs exclusively via command line interface to display genomic data directly in a terminal window. By following the same philosophy of UNIX tools, ASCIIGenome aims to be easily integrated with the command line, including batch processing of data, and therefore enables an effective exploration of the data...
January 24, 2017: Bioinformatics
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