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Procedural memory

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https://www.readbyqxmd.com/read/28922507/randomized-controlled-trial-evaluating-the-temporal-effects-of-high-intensity-exercise-on-learning-short-term-and-long-term-memory-and-prospective-memory
#1
Emily Frith, Eveleen Sng, Paul D Loprinzi
To examine the temporal effects of high-intensity exercise on learning, short-term and long-term retrospective memory and prospective memory. Among a sample of 88 young adult participants, 22 were randomized into one of four different groups: exercise before learning, control group, exercise during learning and exercise after learning. The retrospective assessments (learning, short-term and long-term memory) were assessed using the Rey Auditory Verbal Learning Test. Short-term memory included a 20-min delay assessment, with long-term memory including a 24-hour follow-up assessment...
September 18, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28922421/effects-of-acute-administration-of-donepezil-or-memantine-on-sleep-deprivation-induced-spatial-memory-deficit-in-young-and-aged-non-human-primate-grey-mouse-lemurs-microcebus-murinus
#2
Anisur Rahman, Yves Lamberty, Esther Schenker, Massimo Cella, Solène Languille, Régis Bordet, Jill Richardson, Fabien Pifferi, Fabienne Aujard
The development of novel therapeutics to prevent cognitive decline of Alzheimer's disease (AD) is facing paramount difficulties since the translational efficacy of rodent models did not resulted in better clinical results. Currently approved treatments, including the acetylcholinesterase inhibitor donepezil (DON) and the N-methyl-D-aspartate antagonist memantine (MEM) provide marginal therapeutic benefits to AD patients. There is an urgent need to develop a predictive animal model that is phylogenetically proximal to humans to achieve better translation...
2017: PloS One
https://www.readbyqxmd.com/read/28919502/comparison-of-the-memory-foam-pad-versus-the-bean-bag-with-shoulder-braces-in-preventing-patient-displacement-during-gynecologic-laparoscopic-surgery
#3
Sara Farag, Leigh Rosen, Charles Ascher-Walsh
STUDY OBJECTIVE: The primary aim was to compare the amount of patient displacement when a memory foam pad is used versus a bean bag with shoulder braces. The secondary aim was to evaluate for post-operative extremity symptoms including pain, numbness, and weakness. DESIGN: Prospective randomized pilot study. DESIGN: Classification: Canadian Task Force Class I SETTING: Single academic institution PATIENTS: Women ≥ 18 years of age undergoing laparoscopic or robotic gynecologic surgery INTERVENTIONS: Patients were randomized to be positioned on the memory foam pad (Group A) or the bean bag with shoulder braces (Group B) pre-operatively...
September 15, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28915313/a-metabolomic-approach-applied-to-a-liquid-chromatography-coupled-to-high-resolution-tandem-mass-spectrometry-method-hplc-esi-hrms-ms-towards-the-comprehensive-evaluation-of-the-chemical-composition-of-cannabis-medicinal-extracts
#4
Cinzia Citti, Umberto Maria Battisti, Daniela Braghiroli, Giuseppe Ciccarella, Martin Schmid, Maria Angela Vandelli, Giuseppe Cannazza
INTRODUCTION: Cannabis sativa L. is a powerful medicinal plant and its use has recently increased for the treatment of several pathologies. Nonetheless, side effects, like dizziness and hallucinations, and long-term effects concerning memory and cognition, can occur. Most alarming is the lack of a standardised procedure to extract medicinal cannabis. Indeed, each galenical preparation has an unknown chemical composition in terms of cannabinoids and other active principles that depends on the extraction procedure...
September 15, 2017: Phytochemical Analysis: PCA
https://www.readbyqxmd.com/read/28914428/anhydroecgonine-methyl-ester-aeme-a-product-of-cocaine-pyrolysis-impairs-spatial-working-memory-and-induces-striatal-oxidative-stress-in-rats
#5
Elisa Fraga Gomes, Ingryd Fortes Souza Lipaus, Cleciane Waldetário Martins, Andrezza Menezes Araújo, Josidéia Barreto Mendonça, Fabrício Souza Pelição, Evandro Carlos Lebarch, Lívia Carla de Melo Rodrigues, Ester Miyuki Nakamura-Palacios
When burning crack cocaine, the pyrolysis of cocaine generates anhydroecgonine methyl ester (AEME). AEME has been shown to be highly neurotoxic but its effects on cognitive function and oxidative stress are still unknown. Thus, this study investigated the effects of AEME on spatial working memory and on parameters of oxidative stress in the prefrontal cortex, hippocampus, and striatum. First, 18 well-trained rats in 8-arm radial maze (8-RM) procedures received acute intracerebroventricular (icv) administration of AEME at doses of 10, 32, or 100 μg or saline (SAL) in a counterbalanced order and were tested 5 min later in 1-h delayed tasks in the 8-RM...
September 15, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28910862/effects-of-newly-synthesized-recombinant-human-amyloid-%C3%AE-complexes-and-poly-amyloid-%C3%AE-fibers-on-cell-apoptosis-and-cognitive-decline
#6
Soojin Park, Jae-Won Huh, Taekil Eom, Naeun Na, Youngjeon Lee, Ju-Sung Kim, Sun-Uk Kim, Insop Shim, Sang-Rae Lee, Ekyune Kim
The main pathological hallmark of Alzheimer's disease is the deposition of amyloid-β peptide (Aβ) in the brain. Aβ has been widely used to mimic several aspects of Alzheimer's disease. However, several characteristics of amyloid-induced Alzheimer's disease pathology are not well established, especially in mice. The present study aimed to develop a new Alzheimer's disease model by investigating how amyloid beta can be effectively aggregated using prokaryotes and eukaryotes. To express the Aβ42 complex in HEK293 cells, we cloned the Aβ42 region repeatedly and incorporated the resulting construct into a eukaryotic expression vector...
September 15, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28910337/mouse-repeated-electroconvulsive-seizure-ecs-does-not-reverse-social-stress-effects-but-does-induce-behavioral-and-hippocampal-changes-relevant-to-electroconvulsive-therapy-ect-side-effects-in-the-treatment-of-depression
#7
Erin M van Buel, Hannes Sigrist, Erich Seifritz, Lianne Fikse, Fokko J Bosker, Robert A Schoevers, Hans C Klein, Christopher R Pryce, Ulrich Lm Eisel
Electroconvulsive therapy (ECT) is an effective treatment for depression, but can have negative side effects including amnesia. The mechanisms of action underlying both the antidepressant and side effects of ECT are not well understood. An equivalent manipulation that is conducted in experimental animals is electroconvulsive seizure (ECS). Rodent studies have provided valuable insights into potential mechanisms underlying the antidepressant and side effects of ECT. However, relatively few studies have investigated the effects of ECS in animal models with a depression-relevant manipulation such as chronic stress...
2017: PloS One
https://www.readbyqxmd.com/read/28899505/an-alkaloid-extract-obtained-from-phlegmariurus-saururus-induces-neuroprotection-after-status-epilepticus
#8
Víctor Danelon, Laura Montroull, Mariana Vallejo, José Cabrera, Alicia Agnese, María Gabriela Ortega, Daniel Mascó
BACKGROUND: The brain is exposed to many excitotoxic insults that can lead to neuronal damage. Among these, Epilepsy is a neurological disease that affects a large percentage of world population and is commonly associated with cognitive disorders and excitotoxic neuronal death. Most experimental strategies are focused on preventing Status Epilepticus (SE), but once it has already occurred, the key question is whether it is possible to save neurons. PURPOSE: The aim of this study was to determine if a purified alkaloid extract (AE) obtained from Phlegmariurus saururus, a genus of Lycophyte plants (sometimes known as firmossesor fir club mosses) could induce neuroprotection following SE...
October 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28899121/unconscious-fantasy-and-the-priming-phenomenon
#9
Anne Erreich
This paper is the third in a series of investigations into (1) the nature and development of unconscious fantasy, (2) its place in a contemporary model of mind that, parenthetically, suggests a possible solution to the problem of theoretical pluralism, and (3) its mode of operation in the mind. The aim of these investigations is to update the notion of unconscious fantasy, an indispensable construct in psychoanalytic theories that assume out-of-awareness mentation, and to situate that construct within contemporary views of mental functioning in disciplines such as philosophy of mind, cognitive science, and developmental psychology...
April 2017: Journal of the American Psychoanalytic Association
https://www.readbyqxmd.com/read/28893667/amnestic-drugs-in-the-odor-span-task-effects-of-flunitrazepam-zolpidem-and-scopolamine
#10
Mark Galizio, Michael Mathews, Madeleine Mason, Danielle Panoz-Brown, Ashley Prichard, Paul Soto
The odor span task is an incrementing non-matching-to-sample procedure designed to provide an analysis of working memory capacity in rodents. The procedure takes place in an arena apparatus and rats are exposed to a series of odor stimuli in the form of scented lids with the selection of new stimuli reinforced. This procedure makes it possible to study drug effects as a function of the number of stimuli to remember. In the present study, the non-selective positive allosteric GABAA receptor modulator flunitrazepam impaired odor span performance at doses that did not affect a control odor discrimination...
September 8, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/28892465/shifting-memories
#11
Hong-Viet V Ngo, Bernhard P Staresina
A region of the brain called the putamen has a central role in procedural memory consolidation during sleep.
September 11, 2017: ELife
https://www.readbyqxmd.com/read/28892464/network-wide-reorganization-of-procedural-memory-during-nrem-sleep-revealed-by-fmri
#12
Shahabeddin Vahdat, Stuart Fogel, Habib Benali, Julien Doyon
Sleep is necessary for the optimal consolidation of newly acquired procedural memories. However, the mechanisms by which motor memory traces develop during sleep remain controversial in humans, as this process has been mainly investigated indirectly by comparing pre- and post-sleep conditions. Here, we used functional magnetic resonance imaging and electroencephalography during sleep following motor sequence learning to investigate how newly-formed memory traces evolve dynamically over time. We provide direct evidence for transient reactivation followed by downscaling of functional connectivity in a cortically-dominant pattern formed during learning, as well as gradual reorganization of this representation toward a subcortically-dominant consolidated trace during non-rapid eye movement (NREM) sleep...
September 11, 2017: ELife
https://www.readbyqxmd.com/read/28890702/a-pilot-study-of-the-effects-of-mindfulness-based-stress-reduction-on-post-traumatic-stress-disorder-symptoms-and-brain-response-to-traumatic-reminders-of-combat-in-operation-enduring-freedom-operation-iraqi-freedom-combat-veterans-with-post-traumatic-stress
#13
James Douglas Bremner, Sanskriti Mishra, Carolina Campanella, Majid Shah, Nicole Kasher, Sarah Evans, Negar Fani, Amit Jasvant Shah, Collin Reiff, Lori L Davis, Viola Vaccarino, James Carmody
OBJECTIVE: Brain imaging studies in patients with post-traumatic stress disorder (PTSD) have implicated a circuitry of brain regions including the medial prefrontal cortex, amygdala, hippocampus, parietal cortex, and insula. Pharmacological treatment studies have shown a reversal of medial prefrontal deficits in response to traumatic reminders. Mindfulness-based stress reduction (MBSR) is a promising non-pharmacologic approach to the treatment of anxiety and pain disorders. The purpose of this study was to assess the effects of MBSR on PTSD symptoms and brain response to traumatic reminders measured with positron-emission tomography (PET) in Operation Enduring Freedom/Operation Iraqi Freedom (OEF/OIF) combat veterans with PTSD...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28890320/neuropsychologist-s-re-view-resective-versus-ablative-amygdalohippocampectomies
#14
REVIEW
Juri-Alexander Witt, Christian Hoppe, Christoph Helmstaedter
Pharmacoresistant mesial temporal lobe epilepsy (mTLE) represents the major indication for epilepsy surgery. Since epilepsy surgery is an elective treatment option, preserving cognition is a high priority. Given the essential role of temporomesial structures in declarative long-term memory formation, surgical treatment for mTLE is primarily associated with a risk of material-specific memory decline, but other cognitive domains may be affected as well. The major determinants for the neuropsychological outcome are the functional integrity of surgically affected tissues, the functional reserve capacities of the remnant brain, the postoperative seizure outcome, as well as the quantitative and qualitative changes of antiepileptic drugs...
September 1, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28889063/controlled-and-implicit-processes-in-evaluative-conditioning-on-implicit-and-explicit-attitudes-toward-alcohol-and-intentions-to-drink
#15
Oulmann Zerhouni, Laurent Bègue, Francisco Comiran, Reinout W Wiers
Since implicit attitudes (i.e. evaluations occurring outside of complete awareness) are highly predictive of alcohol consumption, we tested an evaluative learning procedure based on repeated pairing to a critical stimulus (i.e. alcohol, the CS) with a valenced stimulus (the US) in order to modify implicit attitudes (i.e. evaluative conditioning; EC). We hypothesized that manipulating the learning context to bolster implicit affect misattribution should strengthen EC effects on implicit attitudes toward alcohol, while encouraging deliberate processing of CS-US pairs, should strengthen EC effects on explicit attitudes...
August 31, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28884427/effect-of-oleuropein-on-cognitive-deficits-and-changes-in-hippocampal-brain-derived-neurotrophic-factor-and-cytokine-expression-in-a-rat-model-of-post-traumatic-stress-disorder
#16
Bombi Lee, Insop Shim, Hyejung Lee, Dae-Hyun Hahm
Post-traumatic stress disorder (PTSD) is a condition that develops after an individual has experienced a major trauma. This psychopathological response to traumatic stressors induces learning and memory deficits in rats. Oleuropein (OLE), a major compound in olive leaves, has been reported to possess several pharmacological properties, including anti-cancer, anti-diabetic, anti-atherosclerotic and neuroprotective activities. However, the cognitive effects of OLE and its mechanism of action have remained unclear in PTSD...
September 7, 2017: Journal of Natural Medicines
https://www.readbyqxmd.com/read/28883499/a-reminder-before-extinction-strengthens-episodic-memory-via-reconsolidation-but-fails-to-disrupt-generalized-threat-responses
#17
Marijn C W Kroes, Joseph E Dunsmoor, Qi Lin, Michael Evans, Elizabeth A Phelps
A reminder can temporarily renew flexibility of consolidated memories, referred to as reconsolidation. Pavlovian threat-conditioning studies suggest that a reminder can renew flexibility of threat responses but that episodic memories remain stable. In contrast, outside the threat-conditioning domain, studies testing memory for word lists or stories find that a reminder can renew flexibility of episodic memory. This discrepancy in findings leaves it unclear if episodic memories reconsolidate, or only Pavlovian responses...
September 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28881970/improving-the-performance-of-minimizers-and-winnowing-schemes
#18
Guillaume Marçais, David Pellow, Daniel Bork, Yaron Orenstein, Ron Shamir, Carl Kingsford
Motivation: The minimizers scheme is a method for selecting k -mers from sequences. It is used in many bioinformatics software tools to bin comparable sequences or to sample a sequence in a deterministic fashion at approximately regular intervals, in order to reduce memory consumption and processing time. Although very useful, the minimizers selection procedure has undesirable behaviors (e.g. too many k -mers are selected when processing certain sequences). Some of these problems were already known to the authors of the minimizers technique, and the natural lexicographic ordering of k -mers used by minimizers was recognized as their origin...
July 15, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28881795/rnase-alleviates-neurological-dysfunction-in-mice-undergoing-cardiac-arrest-and-cardiopulmonary-resuscitation
#19
Ye Ma, Chan Chen, Shu Zhang, Qiao Wang, Hai Chen, Yuanlin Dong, Zheng Zhang, Yan Li, Zhendong Niu, Tao Zhu, Hai Yu, Bin Liu
Cardiac arrest (CA) is one of the leading lethal factors. Despite cardiopulmonary resuscitation (CPR) procedure has been consecutively improved and lots of new strategies have been developed, neurological outcome of the patients experienced CPR is still disappointing. Ribonuclease (RNase) has been demonstrated to have neuroprotective effects in acute stroke and postoperative cognitive impairment, possibly through acting against endogenous RNA that released from damaged tissue. However, the role of RNase in post-cardiac arrest cerebral injury is unknown...
August 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28874111/the-fall-in-older-adults-physical-and-cognitive-problems
#20
Bernard Demanze Laurence, Lacour Michel
BACKGROUND: The aging of posture and balance function alters the quality of life in older people and causes serious problems in terms of public health and socio-economic costs for our modern societies. METHOD: This article reviews the various causes of imbalance and dizziness in the elderly, and considers how to prevent falls, and how to rehabilitate a faller subject in order to regain a good quality of life. Two effective ways of intervention are discussed, emphasizing the crucial role of physical activity and cognitive stimulation, classic or using the latest technical advances in virtual reality and video games...
2017: Current Aging Science
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