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https://www.readbyqxmd.com/read/28641247/modeling-task-fmri-data-via-deep-convolutional-autoencoder
#1
Heng Huang, Xintao Hu, Yu Zhao, Milad Makkie, Qinglin Dong, Shijie Zhao, Lei Guo, Tianming Liu
Task-based fMRI (tfMRI) has been widely used to study functional brain networks under task performance. Modeling tfMRI data is challenging due to at least two problems: the lack of the ground truth of underlying neural activity and the highly complex intrinsic structure of tfMRI data. To better understand brain networks based on fMRI data, data-driven approaches have been proposed, for instance, Independent Component Analysis (ICA) and Sparse Dictionary Learning (SDL). However, both ICA and SDL only build shallow models, and they are under the strong assumption that original fMRI signal could be linearly decomposed into time series components with their corresponding spatial maps...
June 15, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28641136/age-exacerbates-abnormal-protein-expression-in-a-mouse-model-of-down-syndrome
#2
Md Mahiuddin Ahmed, Aaron Block, Suhong Tong, Muriel T Davisson, Katheleen J Gardiner
The Ts65Dn is a popular mouse model of Down syndrome (DS). It displays DS-relevant features of learning/memory deficits and age-related loss of functional markers in basal forebrain cholinergic neurons. Here we describe protein expression abnormalities in brain regions of 12-month-old male Ts65Dn mice. We show that the magnitudes of abnormalities of human chromosome 21 and non-human chromosome 21 orthologous proteins are greater at 12 months than at ∼6 months. Age-related exacerbations involve the number of components affected in the mechanistic target of rapamycin pathway, the levels of components of the mitogen-activated protein kinase pathway, and proteins associated with Alzheimer's disease...
May 10, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28641020/comparison-of-the-buschke-selective-reminding-test-and-the-california-verbal-learning-test-second-edition-in-a-stroke-population
#3
McKenzie E M Campbell, Damian Leitner, Harry B Miller, Maya Libben
There are many tests of learning and memory; however, not all yield analogous results and thus are not interchangeable. This study examined the relationship between the California Verbal Learning Test-Second Edition (CVLT-II) and the Buschke Selective Reminding Test (SRT) in a stroke population. Data from stroke inpatients (N = 102) referred for rehabilitation were collected from medical records. Both tests were administered, as part of a larger neuropsychological assessment. Analyses were conducted on Z-scores from the List Total, Learning, and Long Delay Free Recall (LDFR) subscales of the two tests...
June 22, 2017: Applied Neuropsychology. Adult
https://www.readbyqxmd.com/read/28640825/olfactory-learning-without-the-mushroom-bodies-spiking-neural-network-models-of-the-honeybee-lateral-antennal-lobe-tract-reveal-its-capacities-in-odour-memory-tasks-of-varied-complexities
#4
HaDi MaBouDi, Hideaki Shimazaki, Martin Giurfa, Lars Chittka
The honeybee olfactory system is a well-established model for understanding functional mechanisms of learning and memory. Olfactory stimuli are first processed in the antennal lobe, and then transferred to the mushroom body and lateral horn through dual pathways termed medial and lateral antennal lobe tracts (m-ALT and l-ALT). Recent studies reported that honeybees can perform elemental learning by associating an odour with a reward signal even after lesions in m-ALT or blocking the mushroom bodies. To test the hypothesis that the lateral pathway (l-ALT) is sufficient for elemental learning, we modelled local computation within glomeruli in antennal lobes with axons of projection neurons connecting to a decision neuron (LHN) in the lateral horn...
June 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28640655/usual-interstitial-pneumonia-can-be-detected-in-transbronchial-biopsies-using-machine-learning
#5
Daniel G Pankratz, Yoonha Choi, Urooj Imtiaz, Grażyna M Fedorowicz, Jessica D Anderson, Thomas V Colby, Jeffrey L Myers, David A Lynch, Kevin K Brown, Kevin R Flaherty, Mark P Steele, Steve D Groshong, Ganesh Raghu, Neil M Barth, P Sean Walsh, Jing Huang, Giulia C Kennedy, Fernando J Martinez
RATIONALE: Usual interstitial pneumonia (UIP) is the histopathologic hallmark of idiopathic pulmonary fibrosis. While UIP can be detected by high-resolution computed tomography (HRCT) of the chest, HRCT results are frequently inconclusive, and pathology from transbronchial biopsy (TBB) has poor sensitivity. Surgical lung biopsy (SLB) may be necessary for a definitive diagnosis. OBJECTIVES: To develop a genomic classifier in tissue obtained by TBB that distinguishes UIP from non-UIP, trained against central pathology as the reference standard...
June 22, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28640652/protective-effect-against-brain-tissues-oxidative-damage-as-a-possible-mechanism-for-beneficial-effects-of-l-arginine-on-lipopolysaccharide-induced-memory-impairment-in-rats
#6
Mahmoud Hosseini, Akbar Anaeigoudari, Farimah Beheshti, Mohammad Soukhtanloo, Reza Nosratabadi
L-Arginine (LA) and nitric oxide (NO) have been suggested to have some effects on learning, memory, brain tissues oxidative damage, and neuroinflammation. In this study, protective effect against brain tissues oxidative damage as a possible mechanism for beneficial effects of LA on lipopolysaccharide (LPS) induced memory impairment was investigated. The rats were grouped into and treated by (1) control (saline), (2) LPS (1 mg/kg, IP), (3) LA (200 mg/kg) - LPS (4) LA. In passive avoidance (PA) test, LPS administration shortened the latency to enter the dark compartment in LPS group compared to control (p < ...
June 22, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/28637316/incorporating-comparative-genomics-into-the-design-test-learn-cycle-of-microbial-strain-engineering
#7
Maria Sardi, Audrey P Gasch
Engineering microbes with new properties is an important goal in industrial engineering, to establish biological factories for production of biofuels, commodity chemicals, and pharmaceutics. But engineering microbes to produce new compounds with high yield remains a major challenge toward economically viable production. Incorporating several modern approaches, including synthetic and systems biology, metabolic modeling, and regulatory rewiring have proven to significantly advance industrial strain engineering...
June 16, 2017: FEMS Yeast Research
https://www.readbyqxmd.com/read/28637146/instilling-positive-beliefs-about-disabilities-pilot-testing-a-novel-experiential-learning-activity-for-rehabilitation-students
#8
Arielle M Silverman, Jennifer S Pitonyak, Ian K Nelson, Patricia N Matsuda, Deborah Kartin, Ivan R Molton
PURPOSE: To develop and test a novel impairment simulation activity to teach beginning rehabilitation students how people adapt to physical impairments. METHODS: Masters of Occupational Therapy students (n = 14) and Doctor of Physical Therapy students (n = 18) completed the study during the first month of their program. Students were randomized to the experimental or control learning activity. Experimental students learned to perform simple tasks while simulating paraplegia and hemiplegia...
February 25, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28637065/evaluation-of-an-e-learning-system-for-diagnosis-of-gastric-lesions-using-magnifying-narrow-band-imaging-a-multicenter-randomized-controlled-study
#9
Hiroyoshi Nakanishi, Hisashi Doyama, Hideki Ishikawa, Noriya Uedo, Takuji Gotoda, Mototsugu Kato, Shigeaki Nagao, Yasuaki Nagami, Hiroyuki Aoyagi, Atsushi Imagawa, Junichi Kodaira, Shinya Mitsui, Nozomu Kobayashi, Manabu Muto, Hajime Takatori, Takashi Abe, Masahiko Tsujii, Jiro Watari, Shuhei Ishiyama, Ichiro Oda, Hiroyuki Ono, Kazuhiro Kaneko, Chizu Yokoi, Tetsuya Ueo, Kunihisa Uchita, Kenshi Matsumoto, Takashi Kanesaka, Yoshinori Morita, Shinichi Katsuki, Jun Nishikawa, Katsuhisa Inamura, Tetsu Kinjo, Katsumi Yamamoto, Daisuke Yoshimura, Hiroshi Araki, Hiroshi Kashida, Ayumu Hosokawa, Hirohito Mori, Haruhiro Yamashita, Osamu Motohashi, Kazuhiko Kobayashi, Michiaki Hirayama, Hiroyuki Kobayashi, Masaki Endo, Hiroo Yamano, Kazunari Murakami, Tomoyuki Koike, Kingo Hirasawa, Youichi Miyaoka, Hidetaka Hamamoto, Takuto Hikichi, Norihiro Hanabata, Ryo Shimoda, Shinichiro Hori, Tadashi Sato, Shinya Kodashima, Hiroyuki Okada, Tomohiko Mannami, Shojiro Yamamoto, Yasumasa Niwa, Kazuo Yashima, Satoshi Tanabe, Hiro Satoh, Fumisato Sasaki, Tetsuro Yamazato, Yoshiou Ikeda, Hogara Nishisaki, Masahiro Nakagawa, Akio Matsuda, Fumio Tamura, Hitoshi Nishiyama, Keiko Arita, Keisuke Kawasaki, Kazushige Hoppo, Masashi Oka, Shinichi Ishihara, Michita Mukasa, Hiroaki Minamino, Kenshi Yao
Background and study aim Magnifying narrow-band imaging (M-NBI) is useful for the accurate diagnosis of early gastric cancer (EGC). However, acquiring skill at M-NBI diagnosis takes substantial effort. An Internet-based e-learning system to teach endoscopic diagnosis of EGC using M-NBI has been developed. This study evaluated its effectiveness. Participants and methods This study was designed as a multicenter randomized controlled trial. We recruited endoscopists as participants from all over Japan. After completing Test 1, which consisted of M-NBI images of 40 gastric lesions, participants were randomly assigned to the e-learning or non-e-learning groups...
June 21, 2017: Endoscopy
https://www.readbyqxmd.com/read/28636883/the-effects-of-monocular-training-on-binocular-functions-in-anisometropic-amblyopia
#10
Wuli Jia, Fangfang Lan, Zhao Xin, Zhong-Lin Lu, Chang-Bing Huang, Wuxiao Zhao, Min Li
PURPOSE: It's been shown that intensive monocular perceptual learning can improve visual acuity, contrast sensitivity, and vernier acuity in the amblyopic eye in adults with amblyopia. It is however not clear how much monocular training can enhance binocular visual functions. In the current study, we aimed to evaluate effects of monocular training on a variety of binocular functions. METHODS: Nineteen anisometropic amblyopes (18.5±1.26 yrs) were trained in a grating contrast detection task near each individual's cutoff spatial frequency for 6 to 10 days (630 trials/day)...
June 18, 2017: Vision Research
https://www.readbyqxmd.com/read/28636677/contextual-imitation-of-intransitive-body-actions-in-a-beluga-whale-delphinapterus-leucas-a-do-as-other-does-study
#11
José Z Abramson, Mª Victoria Hernández-Lloreda, José-Antonio Esteban, Fernando Colmenares, Francisco Aboitiz, Josep Call
Cetaceans are remarkable for exhibiting group-specific behavioral traditions or cultures in several behavioral domains (e.g., calls, behavioral tactics), and the question of whether they can be acquired socially, for example through imitative processes, remains open. Here we used a "Do as other does" paradigm to experimentally study the ability of a beluga to imitate familiar intransitive (body-oriented) actions demonstrated by a conspecific. The participant was first trained to copy three familiar behaviors on command (training phase) and then was tested for her ability to generalize the learned "Do as the other does" command to a different set of three familiar behaviors (testing phase)...
2017: PloS One
https://www.readbyqxmd.com/read/28636361/a-machine-learning-assisted-approach-for-discovering-novel-inhibitors-targeting-bromodomain-containing-protein-4
#12
Jing Xing, Wenchao Lu, Rongfeng Liu, Yulan Wang, Yiqian Xie, Hao Zhang, Zhe Shi, Hao Jiang, Yu-Chih Liu, Kaixian Chen, Hualiang Jiang, Cheng Luo, Mingyue Zheng
Bromodomain-containing protein 4 (BRD4) is implicated in the pathogenesis of a number of different cancers, inflammatory diseases and heart failure. Much effort has been dedicated toward discovering novel scaffold BRD4 inhibitors (BRD4is) with different selectivity profiles and potential anti-resistance properties. Structure-based drug design (SBDD) and virtual screening (VS) are the most frequently used approaches. Here, we demonstrate a novel, structure-based VS approach that uses machine-learning algorithms trained on the priori structure and activity knowledge to predict the likelihood that a compound is a BRD4i based on its binding pattern with BRD4...
June 21, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/28634873/evaluating-two-evidence-based-intervention-strategies-to-promote-crc-screening-among-latino-adults-in-a-primary-care-setting
#13
Sheila F Castañeda, Balambal Bharti, Rebeca Aurora Espinoza-Giacinto, Valerie Sanchez, Shawne O'Connell, Fatima Muñoz, Sylvia Mercado, Marie Elena Meza, Wendy Rojas, Gregory A Talavera, Samir Gupta
Regular use of colorectal cancer screening can reduce incidence and mortality, but participation rates remain low among low-income, Spanish-speaking Latino adults. We conducted two distinct pilot studies testing the implementation of evidence-based interventions to promote fecal immunochemical test (FIT) screening among Latinos aged 50-75 years who were not up-to-date with CRC screening (n = 200) at a large Federally Qualified Health Center (FQHC) in San Diego, CA. One pilot focused on an opportunistic clinic visit "in-reach" intervention including a 30-min session with a patient navigator, review of an educational "flip-chart," and a take-home FIT kit with instructions...
June 20, 2017: Journal of Racial and Ethnic Health Disparities
https://www.readbyqxmd.com/read/28634715/regulatory-element-based-prediction-identifies-new-susceptibility-regulatory-variants-for-osteoporosis
#14
Shi Yao, Yan Guo, Shan-Shan Dong, Ruo-Han Hao, Xiao-Feng Chen, Yi-Xiao Chen, Jia-Bin Chen, Qing Tian, Hong-Wen Deng, Tie-Lin Yang
Despite genome-wide association studies (GWASs) have identified many susceptibility genes for osteoporosis, it still leaves a large part of missing heritability to be discovered. Integrating regulatory information and GWASs could offer new insights into the biological link between the susceptibility SNPs and osteoporosis. We generated five machine learning classifiers with osteoporosis-associated variants and regulatory features data. We gained the optimal classifier and predicted genome-wide SNPs to discover susceptibility regulatory variants...
June 20, 2017: Human Genetics
https://www.readbyqxmd.com/read/28634679/establishment-of-two-forensic-medicine-osce-stations-on-the-subject-of-external-post-mortem-examination
#15
S Heide, R Lessig, V Hachmann, D Stiller, M Rönsch, D Stoevesandt, A Biolik, S Watzke, J Kellner
An improvement in quality of medical external post-mortem examinations among others can be achieved by more intensive training of medical students. Modern learning and teaching methods such as e-learning modules and SkillsLab stations should be used for this. The introduction of corresponding methods of assessment such as the OSCE procedure is necessary to test the success of learning. In Halle (Germany), two OSCE stations on the subject of external post-mortem examinations were introduced in 2016. The 'practical external post-mortem examination' station test skills and abilities students have learned during practical external post-mortem examination in small group classes on a simulation doll...
June 21, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28634628/standardizing-hysteroscopy-teaching-development-of-a-curriculum-using-the-delphi-method
#16
Marie-Emmanuelle Neveu, Elodie Debras, Julien Niro, Hervé Fernandez, Pierre Panel
BACKGROUND: Hysteroscopy is performed often and in many indications but is challenging to learn. Hands-on training in live patients faces ethical, legal, and economic obstacles. Virtual reality simulation may hold promise as a hysteroscopy training tool. No validated curriculum specific in hysteroscopy exists. The aim of this study was to develop a hysteroscopy curriculum, using the Delphi method to identify skill requirements. METHODS: Based on a literature review using the key words "curriculum," "simulation," and "hysteroscopy," we identified five technical and non-technical areas in which skills were required...
June 20, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28633170/teaching-primary-care-genetics-a-randomized-controlled-trial-comparison
#17
Deanna Telner, June C Carroll, Glenn Regehr, Diana Tabak, Kara Semotiuk, Risa Freeman
BACKGROUND AND OBJECTIVE: Given the increasing discussions of the impact of genetic medicine within family medicine, it is important to determine the most effective way of teaching this material to family medicine residents (FMRs). The objective of this study was to evaluate and compare the impact of three methods of delivering primary care genetic content to FMRs. METHODS: Curriculum materials and assessment tools were created to teach and evaluate knowledge, skills, and attitudes around four core competencies in primary care genetics, with a focus on hereditary colorectal cancer (CRC)...
June 2017: Family Medicine
https://www.readbyqxmd.com/read/28633060/childhood-adversity-and-cognitive-functioning-in-patients-with-major-depression
#18
Katharina Dannehl, Winfried Rief, Frank Euteneuer
OBJECTIVE: Major depression is often accompanied by deficits in cognitive functioning and lowered executive functions. However, not all depressed patients show impairments in these domains. The aim of this study was to examine whether different kinds of childhood adversity might account for cognitive deficits in patients with major depression. METHODS: Ninety-one patients with major depression (DSM-IV) and 40 healthy controls completed a neuropsychological test battery assessing memory, processing speed and executive functions...
June 17, 2017: Child Abuse & Neglect
https://www.readbyqxmd.com/read/28632764/accuracy-and-reliability-of-retinal-photo-grading-for-diabetic-retinopathy-remote-graders-from-a-developing-country-and-standard-retinal-photo-grader-in-australia
#19
Fakir M Amirul Islam
BACKGROUND: To evaluate the accuracy and reliability of fundus retinal photos graded by local graders in Bangladesh with those graded by an expert at the Centre for Eye Research Australia (CERA) in the context of mass scale diabetic retinopathy (DR) screening in Bangladesh. METHODS: A population-based cross-sectional study of 3,104 adults identified 213 (7.2%) eligible patients with diabetes of age ≥ 40 years in 2012-2013. Retinal photographs were collected using a non-mydriatic digital fundus retinal camera and a two-field imaging protocol...
2017: PloS One
https://www.readbyqxmd.com/read/28632752/learning-to-exploit-a-hidden-predictor-in-skill-acquisition-tight-linkage-to-conscious-awareness
#20
Randy Tran, Harold Pashler
It is often assumed that implicit learning of skills based on predictive relationships proceeds independently of awareness. To test this idea, four groups of subjects played a game in which a fast-moving "demon" made a brief appearance at the bottom of the computer screen, then disappeared behind a V-shaped occluder, and finally re-appeared briefly on either the upper-left or upper-right quadrant of the screen. Points were scored by clicking on the demon during the final reappearance phase. Demons differed in several visible characteristics including color, horn height and eye size...
2017: PloS One
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