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https://www.readbyqxmd.com/read/29145500/estimation-of-stress-distribution-in-ferromagnetic-tensile-specimens-using-low-cost-eddy-current-stress-measurement-system-and-bp-neural-network
#1
Jianwei Li, Weimin Zhang, Weiqin Zeng, Guolong Chen, Zhongchao Qiu, Xinyuan Cao, Xuanyi Gao
Estimation of the stress distribution in ferromagnetic components is very important for evaluating the working status of mechanical equipment and implementing preventive maintenance. Eddy current testing technology is a promising method in this field because of its advantages of safety, no need of coupling agent, etc. In order to reduce the cost of eddy current stress measurement system, and obtain the stress distribution in ferromagnetic materials without scanning, a low cost eddy current stress measurement system based on Archimedes spiral planar coil was established, and a method based on BP neural network to obtain the stress distribution using the stress of several discrete test points was proposed...
2017: PloS One
https://www.readbyqxmd.com/read/29145492/3d-multi-view-convolutional-neural-networks-for-lung-nodule-classification
#2
Guixia Kang, Kui Liu, Beibei Hou, Ningbo Zhang
The 3D convolutional neural network (CNN) is able to make full use of the spatial 3D context information of lung nodules, and the multi-view strategy has been shown to be useful for improving the performance of 2D CNN in classifying lung nodules. In this paper, we explore the classification of lung nodules using the 3D multi-view convolutional neural networks (MV-CNN) with both chain architecture and directed acyclic graph architecture, including 3D Inception and 3D Inception-ResNet. All networks employ the multi-view-one-network strategy...
2017: PloS One
https://www.readbyqxmd.com/read/29145469/development-of-visual-cortical-function-in-infant-macaques-a-bold-fmri-study
#3
Tom J Van Grootel, Alan Meeson, Matthias H J Munk, Zoe Kourtzi, J Anthony Movshon, Nikos K Logothetis, Lynne Kiorpes
Functional brain development is not well understood. In the visual system, neurophysiological studies in nonhuman primates show quite mature neuronal properties near birth although visual function is itself quite immature and continues to develop over many months or years after birth. Our goal was to assess the relative development of two main visual processing streams, dorsal and ventral, using BOLD fMRI in an attempt to understand the global mechanisms that support the maturation of visual behavior. Seven infant macaque monkeys (Macaca mulatta) were repeatedly scanned, while anesthetized, over an age range of 102 to 1431 days...
2017: PloS One
https://www.readbyqxmd.com/read/29145416/two-is-better-than-one-the-effects-of-strategic-cooperation-on-intra-and-inter-brain-connectivity-by-fnirs
#4
Michela Balconi, Laurent Pezard, Jean-Louis Nandrino, Maria Elide Vanutelli
Inter-brain synchronization during joint actions is a core question in social neuroscience, and the differential contribution of intra- and inter-brain functional connectivity has yet to be clarified along with the role of psychological variables such as perceived self-efficacy. The cognitive performance and the neural activation underlying the execution of joint actions were recorded by functional Near-Infrared imaging during a synchronicity game. An 8-channel array of optodes was positioned over the frontal and prefrontal regions...
2017: PloS One
https://www.readbyqxmd.com/read/29145413/diffusion-based-neuromodulation-can-eliminate-catastrophic-forgetting-in-simple-neural-networks
#5
Roby Velez, Jeff Clune
A long-term goal of AI is to produce agents that can learn a diversity of skills throughout their lifetimes and continuously improve those skills via experience. A longstanding obstacle towards that goal is catastrophic forgetting, which is when learning new information erases previously learned information. Catastrophic forgetting occurs in artificial neural networks (ANNs), which have fueled most recent advances in AI. A recent paper proposed that catastrophic forgetting in ANNs can be reduced by promoting modularity, which can limit forgetting by isolating task information to specific clusters of nodes and connections (functional modules)...
2017: PloS One
https://www.readbyqxmd.com/read/29145292/recurrent-spinal-primitive-neuroectodermal-tumor-with-brain-and-bone-metastases-a-case-report
#6
Frank Chen, Shyh-Shin Chiou, Sheng-Fung Lin, Ann-Shung Lieu, Yi-Ting Chen, Chih-Jen Huang
RATIONALE: Primary spinal primitive neuroectodermal tumor (PNET) is relatively rare in all age groups, and the prognosis in most cases of spinal PNETs appears to be poor, with a median patient survival of 1 to 2 years. We present a case with recurrent spinal PNET with brain and bone metastases that was successfully treated by multimodality treatment. PATIENT CONCERNS: A 14-year-old teenage girl had suffered from progressive left upper back pain with bilateral lower legs weakness and numbness for 1 year...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29145253/anterior-endoscopically-assisted-bone-grafting-for-iatrogenic-distraction-of-odontoid-fracture-after-percutaneous-anterior-screw-fixation-a-case-report
#7
Ze-Xin Chen, Hui Zhang, Nai-Feng Tian, Xiang-Yang Wang, Yan Lin, Yao-Sen Wu
RATIONALE: The complication of iatrogenic distraction of odontoid fracture after anterior screw fixation has not been reported in the literature. We treated the patient with endoscopically assisted bone grafting with good results. The new technique was not reported in the management of odontoid fracture or nonunion before. PATIENT CONCERNS: A 22-year-old man presented with neck pain after a motorcycle crash. The cervical spine radiograph and computed tomographic scan demonstrated the base of dens displaced 2 mm anteriorly...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29145187/diogenes-syndrome
#8
Frédéric Assal
Diogenes syndrome (DS) is not a specific disease but a real neurobehavioral syndrome, characterized by severe domestic squalor, pathological hoarding, lack of insight into the condition, and no need for help. DS can be secondary when associated to psychosis or bipolar disorder, or primary when it occurs as a single entity, usually in the elderly. DS is a clinically complex transnosographic syndrome for which multidimensional approaches need to be considered: medical, psychiatric, neurological, social, scientific, and ethical...
2018: Frontiers of Neurology and Neuroscience
https://www.readbyqxmd.com/read/29145185/hypersexuality-in-neurological-disorders-from-disinhibition-to-impulsivity
#9
M Béreau
Little is known about the neurological control of human sexual behavior. Investigating and measuring this behavior by using quantitative and objective methods is difficult. Insights from lesion studies contribute to analyze the effects of neurological disorders on human sexual behavior. In this chapter, we focus on frontal lobe lesions, brain injuries, epilepsia, dementia, and Parkinson disease to describe human sexual behavior disorders, in order to highlight cortical and subcortical brain regions and neural networks involved in human sexual behavior...
2018: Frontiers of Neurology and Neuroscience
https://www.readbyqxmd.com/read/29145181/pali-and-echo-phenomena-symptoms-of-persistence-and-perseveration
#10
Eloi Magnin, Elisabeth Medeiros de Bustos, Thierry Moulin
Some neurological or psychiatric positive, productive symptoms are an abnormal persistence of a sensorial feeling or abnormal repetition of a motor, behavioral or cognitive process corresponding to a perseverative symptom. Palinopsia, palinacousis, and related sensorial symptoms have been described. Verbal and motor symptoms include echolalia, palilalia, echopraxia, and motor perseveration. Cognitive disorders induce perseverative behavior, perseverative thinking, including palipsychism, flashbulb memories, and reduplicative paramnesia (also known as "palimnesia") and many related perseverative symptoms...
2018: Frontiers of Neurology and Neuroscience
https://www.readbyqxmd.com/read/29145176/the-membrane-attack-complex-perforin-superfamily
#11
Gabriel Moreno-Hagelsieb, Bennett Vitug, Arturo Medrano-Soto, Milton H Saier
The membrane attack complex/perforin (MACPF) superfamily consists of a diverse group of proteins involved in bacterial pathogenesis and sporulation as well as eukaryotic immunity, embryonic development, neural migration and fruiting body formation. The present work shows that the evolutionary relationships between the members of the superfamily, previously suggested by comparison of their tertiary structures, can also be supported by analyses of their primary structures. The superfamily includes the MACPF family (TC 1...
November 17, 2017: Journal of Molecular Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29145167/contraction-response-to-muscle-percussion-a-reappraisal-of-the-mechanism-of-this-bedside-test
#12
Christoph Czarnetzki, André Truffert, Abdelhafid Mekideche, Antoine Poncet, Christopher Lysakowski, Martin R Tramèr, Michel R Magistris
OBJECTIVE: To study whether the contraction evoked by muscle percussion stems from the excitation of the muscle or of the nerve and to discuss the changes of this response in neuromuscular disorders. METHODS: In 30 neurologically healthy patients undergoing surgery (for ear, nose, or throat problems unrelated to the study) under general anesthesia with propofol and sufentanil we measured with an electrogoniometer the maximal dorsiflexion of the ankle evoked by reflex hammer percussion of the tibialis anterior muscle before and under neuromuscular junction blockade with rocuronium bromide...
October 28, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29145015/glial-control-of-neurogenesis
#13
REVIEW
Sven Falk, Magdalena Götz
Glial cells are central components of all neurogenic niches in the embryonic as well as in the adult central nervous system. While neural stem cells (NSCs) themselves exhibit glial features the behavior of NSCs is also strongly influenced by niche glial cells. Recently, studies have begun to uncover a large variety of glial cell-extrinsic as well as intrinsic factors that play crucial roles in the control of NSCs and the regulation of the cellular output from the neurogenic niches. In this review, we focus on mechanisms underlying the formation of adult NSCs by embryonic radial glia cells, discuss the influence of niche glia cells on adult NSCs and examine how the neurogenic potential of glial cells is controlled...
November 13, 2017: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/29144974/double-nanodomain-coupling-of-calcium-channels-ryanodine-receptors-and-bk-channels-controls-the-generation-of-burst-firing
#14
Tomohiko Irie, Laurence O Trussell
Action potentials clustered into high-frequency bursts play distinct roles in neural computations. However, little is known about ionic currents that control the duration and probability of these bursts. We found that, in cartwheel inhibitory interneurons of the dorsal cochlear nucleus, the likelihood of bursts and the interval between their spikelets were controlled by Ca(2+) acting across two nanodomains, one between plasma membrane P/Q Ca(2+) channels and endoplasmic reticulum (ER) ryanodine receptors and another between ryanodine receptors and large-conductance, voltage- and Ca(2+)-activated K(+) (BK) channels...
November 15, 2017: Neuron
https://www.readbyqxmd.com/read/29144973/orbitofrontal-cortex-a-neural-circuit-for-economic-decisions
#15
REVIEW
Camillo Padoa-Schioppa, Katherine E Conen
Economic choice behavior entails the computation and comparison of subjective values. A central contribution of neuroeconomics has been to show that subjective values are represented explicitly at the neuronal level. With this result at hand, the field has increasingly focused on the difficult question of where in the brain and how exactly subjective values are compared to make a decision. Here, we review a broad range of experimental and theoretical results suggesting that good-based decisions are generated in a neural circuit within the orbitofrontal cortex (OFC)...
November 15, 2017: Neuron
https://www.readbyqxmd.com/read/29144551/the-impact-of-volumetric-muscle-loss-injury-on-persistent-motoneuron-axotomy
#16
Benjamin T Corona, Kate E Flanagan, Christian M Brininger, Stephen M Goldman, Jarrod A Call, Sarah M Greising
INTRODUCTION: Volumetric muscle loss (VML) occurs following significant traumatic injury or surgical removal of skeletal muscle, resulting in non-recoverable loss of tissue and long-term dysfunction. Perhaps less recognized is that VML injuries inherently disrupt the neuromuscular unit, resulting in fiber denervation and presumptive motor unit rearrangement, expansion, and/or loss. To characterize neural dysfunction we quantified motoneuron axotomy, in efforts to understand how this relates to the temporal coordination of neuromuscular and morphological alterations due to injury...
November 16, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/29144388/hyperspectral-image-enhancement-and-mixture-deep-learning-classification-of-corneal-epithelium-injuries
#17
Siti Salwa Md Noor, Kaleena Michael, Stephen Marshall, Jinchang Ren
In our preliminary study, the reflectance signatures obtained from hyperspectral imaging (HSI) of normal and abnormal corneal epithelium tissues of porcine show similar morphology with subtle differences. Here we present image enhancement algorithms that can be used to improve the interpretability of data into clinically relevant information to facilitate diagnostics. A total of 25 corneal epithelium images without the application of eye staining were used. Three image feature extraction approaches were applied for image classification: (i) image feature classification from histogram using a support vector machine with a Gaussian radial basis function (SVM-GRBF); (ii) physical image feature classification using deep-learning Convolutional Neural Networks (CNNs) only; and (iii) the combined classification of CNNs and SVM-Linear...
November 16, 2017: Sensors
https://www.readbyqxmd.com/read/29144299/the-modelling-of-lead-removal-from-water-by-deep-eutectic-solvents-functionalized-cnts-artificial-neural-network-ann-approach
#18
Seef Saadi Fiyadh, Mohammed Abdulhakim AlSaadi, Mohamed Khalid AlOmar, Sabah Saadi Fayaed, Ako R Hama, Sharifah Bee, Ahmed El-Shafie
The main challenge in the lead removal simulation is the behaviour of non-linearity relationships between the process parameters. The conventional modelling technique usually deals with this problem by a linear method. The substitute modelling technique is an artificial neural network (ANN) system, and it is selected to reflect the non-linearity in the interaction among the variables in the function. Herein, synthesized deep eutectic solvents were used as a functionalized agent with carbon nanotubes as adsorbents of Pb(2+)...
November 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/29144298/flood-forecasting-within-urban-drainage-systems-using-narx-neural-network
#19
Yves Abou Rjeily, Oras Abbas, Marwan Sadek, Isam Shahrour, Fadi Hage Chehade
Urbanization activity and climate change increase the runoff volumes, and consequently the surcharge of the urban drainage systems (UDS). In addition, age and structural failures of these utilities limit their capacities, and thus generate hydraulic operation shortages, leading to flooding events. The large increase in floods within urban areas requires rapid actions from the UDS operators. The proactivity in taking the appropriate actions is a key element in applying efficient management and flood mitigation...
November 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/29144224/violence-exposure-and-neural-systems-underlying-working-memory-for-emotional-stimuli-in-youth
#20
Jessica L Jenness, Maya L Rosen, Kelly A Sambrook, Meg J Dennison, Hilary K Lambert, Margaret A Sheridan, Katie A McLaughlin
Violence exposure during childhood is common and associated with poor cognitive and academic functioning. However, little is known about how violence exposure influences cognitive processes that might contribute to these disparities, such as working memory, or their neural underpinnings, particularly for cognitive processes that occur in emotionally salient contexts. We address this gap in a sample of 54 participants aged 8 to 19 years (50% female), half with exposure to interpersonal violence. Participants completed a delayed match to sample task for emotional faces while undergoing functional magnetic resonance imaging scanning...
November 16, 2017: Development and Psychopathology
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