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https://www.readbyqxmd.com/read/28817805/ltp-at-hilar-mossy-cell-dentate-granule-cell-synapses-modulates-dentate-gyrus-output-by-increasing-excitation-inhibition-balance
#1
Yuki Hashimotodani, Kaoutsar Nasrallah, Kyle R Jensen, Andrés E Chávez, Daniel Carrera, Pablo E Castillo
Excitatory hilar mossy cells (MCs) in the dentate gyrus receive inputs from dentate granule cells (GCs) and project back to GCs locally, contralaterally, and along the longitudinal axis of the hippocampus, thereby establishing an associative positive-feedback loop and connecting functionally diverse hippocampal areas. MCs also synapse with GABAergic interneurons that mediate feed-forward inhibition onto GCs. Surprisingly, although these circuits have been implicated in both memory formation (e.g., pattern separation) and temporal lobe epilepsy, little is known about activity-dependent plasticity of their synaptic connections...
August 16, 2017: Neuron
https://www.readbyqxmd.com/read/28817732/enhanced-inflammation-in-new-zealand-white-rabbits-when-mers-cov-reinfection-occurs-in-the-absence-of-neutralizing-antibody
#2
Katherine V Houser, Andrew J Broadbent, Lisa Gretebeck, Leatrice Vogel, Elaine W Lamirande, Troy Sutton, Kevin W Bock, Mahnaz Minai, Marlene Orandle, Ian N Moore, Kanta Subbarao
The Middle East respiratory syndrome coronavirus (MERS-CoV) is a zoonotic betacoronavirus that was first detected in humans in 2012 as a cause of severe acute respiratory disease. As of July 28, 2017, there have been 2,040 confirmed cases with 712 reported deaths. While many infections have been fatal, there have also been a large number of mild or asymptomatic cases discovered through monitoring and contact tracing. New Zealand white rabbits are a possible model for asymptomatic infection with MERS-CoV. In order to discover more about non-lethal infections and to learn whether a single infection with MERS-CoV would protect against reinfection, we inoculated rabbits with MERS-CoV and monitored the antibody and inflammatory response...
August 17, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28817571/automated-segmentation-of-mouse-oct-volumes-asimov-validation-clinical-study-of-a-light-damage-model
#3
Bhavna Josephine Antony, Byung-Jin Kim, Andrew Lang, Aaron Carass, Jerry L Prince, Donald J Zack
The use of spectral-domain optical coherence tomography (SD-OCT) is becoming commonplace for the in vivo longitudinal study of murine models of ophthalmic disease. Longitudinal studies, however, generate large quantities of data, the manual analysis of which is very challenging due to the time-consuming nature of generating delineations. Thus, it is of importance that automated algorithms be developed to facilitate accurate and timely analysis of these large datasets. Furthermore, as the models target a variety of diseases, the associated structural changes can also be extremely disparate...
2017: PloS One
https://www.readbyqxmd.com/read/28817452/cms-mds-3-0-section-m-skin-conditions-in-long-term-care-pressure-ulcers-skin-tears-and-moisture-associated-skin-damage-data-update
#4
Elizabeth A Ayello
GENERAL PURPOSE: The purpose of this learning activity is to provide information about the updates to the Centers for Medicare & Medicaid Services (CMS) MDS 3.0 Section M, Skin Conditions documentation in long-term care. TARGET AUDIENCE: This continuing education activity is intended for physicians, physician assistants, nurse practitioners, and nurses with an interest in skin and wound care. LEARNING OBJECTIVES/OUTCOMES: After participating in this educational activity, the participant should be better able to:1...
September 2017: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/28817439/faculty-development-for-the-operating-room-an-examination-of-the-effectiveness-of-an-intraoperative-teaching-course-for-surgeons
#5
Aimee K Gardner, Matthew D Timberlake, Brian J Dunkin
OBJECTIVE: We describe a half-day faculty development course designed to equip surgical educators with evidence-based teaching frameworks shown to promote learning in the operating room (OR). We hypothesize that participating faculty will deliver improved instruction as perceived by residents. METHODS: Residents anonymously rated faculty teaching behaviors among whom they had recently worked in the OR (minimum 3 cases in preceding 6 months) using the Briefing - Intraoperative teaching - Debriefing Assessment Tool (BIDAT; 1 = never, 5 = always)...
August 16, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28817394/drivers-of-continuing-education-learning-preferences-for-veterans-affairs-women-s-health-primary-care-providers
#6
Jessica L Zuchowski, Alison B Hamilton, Donna L Washington, Arthur G Gomez, Laure Veet, Kristina M Cordasco
INTRODUCTION: Documented gaps in health professionals' training in women's health are a special concern for continuing education (CE). In the Veterans Affairs (VA) health care system, women veterans are a numerical minority, preferably assigned to designated women's health primary care providers (DWHPs). DWHPs need to maintain their knowledge and skills in women's health topics, in addition to general internal medicine topics. We explored drivers of VA DWHPs' learning preferences for women's health topics-ie, factors which influence greater and lesser learning interest...
August 16, 2017: Journal of Continuing Education in the Health Professions
https://www.readbyqxmd.com/read/28817242/improved-medical-student-perception-of-ultrasound-using-a-paired-anatomy-teaching-assistant-and-clinician-teaching-model
#7
Jacob P Smith, John L Kendall, Danielle F Royer
This study describes a new teaching model for ultrasound (US) training, and evaluates its effect on medical student attitudes toward US. First year medical students participated in hands-on US during human gross anatomy (2014 N = 183; 2015 N = 182). The sessions were facilitated by clinicians alone in 2014, and by anatomy teaching assistant (TA)-clinician pairs in 2015. Both cohorts completed course evaluations which included five US-related items on a four-point scale; cohort responses were compared using Mann-Whitney U tests with significance threshold set at 0...
August 17, 2017: Anatomical Sciences Education
https://www.readbyqxmd.com/read/28816677/prototype-incorporated-emotional-neural-network
#8
Oyebade K Oyedotun, Adnan Khashman
Artificial neural networks (ANNs) aim to simulate the biological neural activities. Interestingly, many ''engineering'' prospects in ANN have relied on motivations from cognition and psychology studies. So far, two important learning theories that have been subject of active research are the prototype and adaptive learning theories. The learning rules employed for ANNs can be related to adaptive learning theory, where several examples of the different classes in a task are supplied to the network for adjusting internal parameters...
August 15, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28816656/tracking-by-detection-of-3d-human-shapes-from-surfaces-to-volumes
#9
Chun-Hao Huang, Benjamin Allain, Edmond Boyer, Jean-Sebastien Franco, Federico Tombari, Nassir Navab, Slobodan Ilic
3D Human shape tracking consists in fitting a template model to temporal sequences of visual observations. It usually comprises an association step, that finds correspondences between the model and the input data, and a deformation step, that fits the model to the observations given correspondences. Most current approaches follow the Iterative-Closest-Point (ICP) paradigm, where the association step is carried out by searching for the nearest neighbors. It fails when large deformations occur and errors in the association tend to propagate over time...
August 15, 2017: IEEE Transactions on Pattern Analysis and Machine Intelligence
https://www.readbyqxmd.com/read/28816511/virtual-reality-and-active-videogame-based-practice-learning-needs-and-preferences-a-cross-canada-survey-of-physical-therapists-and-occupational-therapists
#10
Danielle Levac, Stephanie Glegg, Heather Colquhoun, Patricia Miller, Farzad Noubary
OBJECTIVE: Describe the clinical use of virtual reality (VR)/active videogaming (AVG) by physical therapists (PTs) and occupational therapists (OTs) in Canada, identify usage barriers and facilitators, evaluate factors that predict intention to use VR/AVGs, and determine therapists' learning needs. DESIGN: Cross-sectional survey. MATERIALS AND METHODS: Online survey of therapists in Canada who were members of 1 of 26 professional PT or OT colleges or associations using the Assessing Determinants Of Prospective Take-up of Virtual Reality (ADOPT-VR2) Instrument...
August 2017: Games for Health
https://www.readbyqxmd.com/read/28815750/title-learning-theories-and-tools-for-the-assessment-of-core-nursing-competencies-in-simulation-a-theoretical-review
#11
REVIEW
Patrick Lavoie, Cécile Michaud, Marilou Bélisle, Louise Boyer, Émilie Gosselin, Myrian Grondin, Caroline Larue, Stéphan Lavoie, Jacinthe Pepin
AIM: To identify the theories used to explain learning in simulation and to examine how these theories guided the assessment of learning outcomes related to core competencies in undergraduate nursing students. BACKGROUND: Nurse educators face the challenge of making explicit the outcomes of competency-based education, especially when competencies are conceptualized as holistic and context-dependent. DESIGN: Theoretical review. DATA SOURCES: Research papers (N=182) published between 1999 - 2015 describing simulation in nursing education...
August 16, 2017: Journal of Advanced Nursing
https://www.readbyqxmd.com/read/28815134/interrogating-patient-level-genomics-and-mouse-phenomics-towards-understanding-cytokines-in-colorectal-cancer-metastasis
#12
Xiaoshu Cai, Yang Chen, Chunlei Zheng, Rong Xu
Background: Colorectal cancer is the second leading cancer-related death worldwide and a majority of patients die from metastasis. Chronic intestinal inflammation plays an important role in tumor progression of colorectal cancer. However, few study works on systematically predicting colorectal cancer metastasis using inflammatory cytokine genes. Results: We developed a supervised machine learning approach to predict colorectal cancer tumor progression using patient level genomic features. To better understand the role of cytokines, we integrated the metastatic-related genes from mouse phenotypic data...
2017: AMIA Summits on Translational Science Proceedings
https://www.readbyqxmd.com/read/28815072/hybrid-and-total-minimally-invasive-esophagectomy-how-i-do-it
#13
REVIEW
Luigi Bonavina, Emanuele Asti, Andrea Sironi, Daniele Bernardi, Alberto Aiolfi
Esophagectomy is a major surgical procedure associated with a significant risk of morbidity and mortality. Minimally invasive esophagectomy is becoming the preferred approach because of the potential to limit surgical trauma, reduce respiratory complications, and promote earlier functional recovery. Various hybrid and total minimally invasive surgical techniques have been introduced in clinical practice over the past 20 years, and minimally invasive esophagectomy has been shown equivalent to open surgery concerning the short-term outcomes...
July 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28814611/homing-pigeons-columba-livia-modulate-wingbeat-characteristics-as-a-function-of-route-familiarity
#14
Lucy A Taylor, Steven J Portugal, Dora Biro
Mechanisms of avian navigation have received considerable attention, but whether different navigational strategies are accompanied by different flight characteristics is unknown. Managing energy expenditure is critical for survival; therefore, understanding how flight characteristics, and hence energy allocation, potentially change with birds' familiarity with a navigational task could provide key insights into the costs of orientation. We addressed this question by examining changes in the wingbeat characteristics and airspeed of homing pigeons (Columba livia) as they learned a homing task...
August 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28814474/role-of-the-bed-nucleus-of-the-stria-terminalis-in-aversive-learning-and-memory
#15
Travis D Goode, Stephen Maren
Surviving threats in the environment requires brain circuits for detecting (or anticipating) danger and for coordinating appropriate defensive responses (e.g., increased cardiac output, stress hormone release, and freezing behavior). The bed nucleus of the stria terminalis (BNST) is a critical interface between the "affective forebrain"-including the amygdala, ventral hippocampus, and medial prefrontal cortex-and the hypothalamic and brainstem areas that have been implicated in neuroendocrine, autonomic, and behavioral responses to actual or anticipated threats...
September 2017: Learning & Memory
https://www.readbyqxmd.com/read/28814470/a-dangerous-context-changes-the-way-that-rats-learn-about-and-discriminate-between-innocuous-events-in-sensory-preconditioning
#16
Nathan M Holmes, R Frederick Westbrook
Four experiments used a sensory preconditioning protocol to examine how a dangerous context influences learning about innocuous events. In Experiments 1, 2, and 3, rats were exposed to presentations of a tone followed immediately or 20-sec later by presentations of a light. These tone-light pairings occurred in a context that was either familiar and safe, or equally familiar but dangerous, that is, it was a context in which rats had been exposed to footshock. Rats were next exposed to parings of the light and shock and then tested with the tone (and light)...
September 2017: Learning & Memory
https://www.readbyqxmd.com/read/28814469/characterization-of-the-amplificatory-effect-of-norepinephrine-in-the-acquisition-of-pavlovian-threat-associations
#17
Lorenzo Díaz-Mataix, Walter T Piper, Hillary C Schiff, Clark H Roberts, Vincent D Campese, Robert M Sears, Joseph E LeDoux
The creation of auditory threat Pavlovian memory requires an initial learning stage in which a neutral conditioned stimulus (CS), such as a tone, is paired with an aversive one (US), such as a shock. In this phase, the CS acquires the capacity of predicting the occurrence of the US and therefore elicits conditioned defense responses. Norepinephrine (NE), through β-adrenergic receptors in the amygdala, enhances threat memory by facilitating the acquisition of the CS-US association, but the nature of this effect has not been described...
September 2017: Learning & Memory
https://www.readbyqxmd.com/read/28813964/brain-computer-interface-combining-eye-saccade-two-electrode-eeg-signals-and-voice-cues-to-improve-the-maneuverability-of-wheelchair
#18
Ker-Jiun Wang, Lan Zhang, Bo Luan, Hsiao-Wei Tung, Quanfeng Liu, Jiacheng Wei, Mingui Sun, Zhi-Hong Mao
Brain-computer interfaces (BCIs) largely augment human capabilities by translating brain wave signals into feasible commands to operate external devices. However, many issues face the development of BCIs such as the low classification accuracy of brain signals and the tedious human-learning procedures. To solve these problems, we propose to use signals associated with eye saccades and blinks to control a BCI interface. By extracting existing physiological eye signals, the user does not need to adapt his/her brain waves to the device...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813670/nkx2-1-is-required-in-the-embryonic-septum-for-cholinergic-system-development-learning-and-memory
#19
Lorenza Magno, Caswell Barry, Christoph Schmidt-Hieber, Polyvios Theodotou, Michael Häusser, Nicoletta Kessaris
The transcription factor NKX2-1 is best known for its role in the specification of subsets of cortical, striatal, and pallidal neurons. We demonstrate through genetic fate mapping and intersectional focal septal deletion that NKX2-1 is selectively required in the embryonic septal neuroepithelium for the development of cholinergic septohippocampal projection neurons and large subsets of basal forebrain cholinergic neurons. In the absence of NKX2-1, these neurons fail to develop, causing alterations in hippocampal theta rhythms and severe deficiencies in learning and memory...
August 15, 2017: Cell Reports
https://www.readbyqxmd.com/read/28813643/multi-connection-pattern-analysis-decoding-the-representational-content-of-neural-communication
#20
Yuanning Li, R Mark Richardson, Avniel Singh Ghuman
The lack of multivariate methods for decoding the representational content of interregional neural communication has left it difficult to know what information is represented in distributed brain circuit interactions. Here we present Multi-Connection Pattern Analysis (MCPA), which works by learning mappings between the activity patterns of the populations as a factor of the information being processed. These maps are used to predict the activity from one neural population based on the activity from the other population...
August 13, 2017: NeuroImage
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