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https://www.readbyqxmd.com/read/28103541/playing-with-senses-in-vr-alternate-perceptions-combining-vision-and-touch
#1
Anatole Lecuyer
Virtual reality is an immersive experience based on computer-generated stimulations perceived with multiple sensory channels. It is possible to manipulate these sensory stimulations independently and create conflicting situations in which, for instance, vision and touch are spatially and/or temporally inconsistent. This article discusses how to exploit these ambiguous sensorial situations to generate new kinds of percept using three types of examples: pseudo-haptic effects, self-motion sensations, and body-ownership illusions...
January 2017: IEEE Computer Graphics and Applications
https://www.readbyqxmd.com/read/28102954/dosimetric-impact-of-lipiodol-in-stereotactic-body-radiation-therapy-on-liver-after-trans-arterial-chemoembolization
#2
Daisuke Kawahara, Shuichi Ozawa, Akito Saito, Teiji Nishio, Tomoki Kimura, Tatsuhiko Suzuki, Kazunari Hioki, Takeo Nakashima, Yoshimi Ohno, Yuji Murakami, Yasushi Nagata
PURPOSE: Stereotactic body radiation therapy (SBRT) combining trans-arterial chemoembolization (TACE) with Lipiodol is expected to improve local control. This study is aimed to estimate the dose enhancement in Lipiodol's proximity and to evaluate the dose calculation accuracy of the Acuros XB (AXB) algorithm and anisotropic analytical algorithm (AAA) in the Eclipse treatment planning system (TPS) (ver. 11, Varian Medical Systems, Palo Alto, USA), compared with that of the Monte Carlo (MC) calculation (using BEAMnrc/DOSXYZnrc code) for a virtual phantom and a treatment plan for liver SBRT after TACE...
January 2017: Medical Physics
https://www.readbyqxmd.com/read/28102953/air-kerma-strength-determination-of-an-hdr-192-ir-source-including-a-geometric-sensitivity-study-of-the-seven-distance-method
#3
Blake R Smith, John A Micka, Manik Aima, Larry A DeWerd, Wesley S Culberson
PURPOSE: To perform an in-air air-kerma strength (SK) calibration of the Bebig model Ir2.A85-2 192Ir high-dose rate (HDR) brachytherapy source manufactured by Mallinckrodt Medical (Westerduinweg, Germany) with the NIST-traceable seven-distance technique established by the University of Wisconsin. A comparison was made between the reference air-kerma rate (RAKR) reported on a certificate from the Physikalisch-Technische Bundesanstalt (Berlin, Germany) (PTB) primary laboratory and the SK determined at the University of Wisconsin Madison Radiation Research Center (UWMRRC)...
January 2017: Medical Physics
https://www.readbyqxmd.com/read/28102893/the-evolving-health-policy-landscape-and-suggested-geriatric-tenets-to-guide-future-responses
#4
Robert L Kane, Debra Saliba, Peter Hollmann
Speculation is rampant about what the new leadership in the White House and continued Republican leadership of both houses of Congress will do about health care. The concordance in party affiliation between President Trump and the congressional majority makes revisions in policy that is relevant to the health of older adults a virtual certainty. Past Republican legislative proposals and the current appointments to lead Health and Human Services (HHS) and the Centers for Medicare & Medicaid Services (CMS) presage several potential areas of change...
January 19, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28102827/a-low-cost-scalable-current-sensing-digital-headstage-for-high-channel-count-%C3%A2%C2%B5ecog
#5
Michael Trumpis, Michele Insanally, Jialin Zou, Ashraf ElSharif, Ali Ghomashchi, N Sertac Artan, Robert Froemke, Jonathan Viventi
OBJECTIVE: High channel count electrode arrays allow for the monitoring of large-scale neural activity at high spatial resolution. Implantable arrays featuring many recording sites require compact, high bandwidth front-end electronics. In the present study, we investigated the use of a small, light weight, and low cost digital current-sensing integrated circuit for acquiring cortical surface signals from a 61-channel micro-electrocorticographic (��ECoG) array. APPROACH: We recorded both acute and chronic ��ECoG signal from rat auditory cortex using our novel digital current-sensing headstage...
January 19, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28102588/three-dimensional-translabial-ultrasound-assessment-of-urethral-supports-and-the-urethral-sphincter-complex-in-stress-urinary-incontinence
#6
Jordi Cassadó Garriga, Antoni Pessarrodona Isern, Monica Rodríguez Carballeira, Mar Pallarols Badia, Manuela Moya Del Corral, Marta Valls Esteve, Eva Huguet Galofré
AIMS: The pathophysiological mechanism of incontinence is multifactorial. We evaluated the role of 3D-4D ultrasound in the assessment of the fascial supports of the urethra and the urethral sphincter complex (USC) for diagnosing stress urinary incontinence. METHODS: Observational case-control study in women with and without stress urinary incontinence attending a urogynecology service and a general gynecology service. All women were interviewed, examined, and classified according to the Pelvic Organ Prolapse Quantification (POP-Q) and underwent a 3D-4D translabial ultrasound...
January 19, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28102312/correlations-of-charge-neutrality-level-with-electronic-structure-and-p-d-hybridization
#7
Arkaprava Das, Subodh K Gautam, D K Shukla, Fouran Singh
The formation of charge neutrality level (CNL) in highly conducting Cadmium oxide (CdO) thin films is demonstarted by the observed variation in the band gap upon annealing and doping. It may be explained by the observation that Tin (Sn) doping breaks the perfect periodicity of CdO cubic crystal structure and creates virtual gap states (ViGS). The level of local CNL resides at the branch point of ViGS, making the energy at which native defect's character changes from predominantly donor-like below CNL to predominantly acceptor-like above the CNL and a schematic band diagram is developed to substantiate the same...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28101620/-home-based-telerehabilitation-after-stroke
#8
M Keidel, F Vauth, J Richter, B Hoffmann, H Soda, B Griewing, M Scibor
The use of modern information and telecommunication technologies enables telerehabilitation of neurological deficits in the domestic environment. The current state of studies on rehabilitative teletherapy for improvement of motor function and mobility deficits due to stroke is reviewed. Two neurolinguistic proof of concept studies investigating the efficacy of online interactive telespeech therapy are reported, which compared virtual screen to screen interactive telerehabilitation of aphasia after stroke and dysarthrophonia in Parkinson's disease to conventional face to face rehabilitation...
January 18, 2017: Der Nervenarzt
https://www.readbyqxmd.com/read/28100720/audience-affects-decision-making-in-a-marmoset-communication-network
#9
Camille R Toarmino, Lauren Wong, Cory T Miller
An audience can have a profound effect on the dynamics of communicative interactions. As a result, non-human primates often adjust their social decision-making strategies depending on the audience composition at a given time. Here we sought to test how the unique vocal behaviour of multiple audience members affected decisions to communicate. To address this issue, we developed a novel experimental paradigm in which common marmosets directly interacted with multiple 'virtual monkeys' (VMs), each of whom represented an individual marmoset with distinct vocal behaviour...
January 2017: Biology Letters
https://www.readbyqxmd.com/read/28100223/surface-attachment-promoted-by-the-actomyosin-system-of-toxoplasma-gondii-is-important-for-efficient-gliding-motility-and-invasion
#10
Jamie A Whitelaw, Fernanda Latorre-Barragan, Simon Gras, Gurman S Pall, Jacqueline M Leung, Aoife Heaslip, Saskia Egarter, Nicole Andenmatten, Shane R Nelson, David M Warshaw, Gary E Ward, Markus Meissner
BACKGROUND: Apicomplexan parasites employ a unique form of movement, termed gliding motility, in order to invade the host cell. This movement depends on the parasite's actomyosin system, which is thought to generate the force during gliding. However, recent evidence questions the exact molecular role of this system, since mutants for core components of the gliding machinery, such as parasite actin or subunits of the MyoA-motor complex (the glideosome), remain motile and invasive, albeit at significantly reduced efficiencies...
January 18, 2017: BMC Biology
https://www.readbyqxmd.com/read/28100203/diaphragmatic-breathing-during-virtual-reality-exposure-therapy-for-aviophobia-functional-coping-strategy-or-avoidance-behavior-a-pilot-study
#11
Youssef Shiban, Julia Diemer, Jana Müller, Johanna Brütting-Schick, Paul Pauli, Andreas Mühlberger
BACKGROUND: Although there is solid evidence for the efficacy of in vivo and virtual reality (VR) exposure therapy for a specific phobia, there is a significant debate over whether techniques promoting distraction or relaxation have impairing or enhancing effects on treatment outcome. In the present pilot study, we investigated the effect of diaphragmatic breathing (DB) as a relaxation technique during VR exposure treatment. METHOD: Twenty-nine patients with aviophobia were randomly assigned to VR exposure treatment either with or without diaphragmatic breathing (six cycles per minute)...
January 18, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28099975/functional-outcome-of-cad-cam-assisted-versus-conventional-microvascular-fibular-free-flap-reconstruction-of-the-mandible-a-retrospective-study-of-30-cases
#12
Lucas M Ritschl, Thomas Mücke, Andreas Fichter, Florian D Güll, Christopher Schmid, Jean Marc Pho Duc, Marco R Kesting, Klaus-Dietrich Wolff, Denys J Loeffelbein
Background Different advantages of virtually planned and guided mandibular reconstructions have been described. Functional analyses and comparisons with conventionally reconstructed patients. Methods We retrospectively analyzed 30 cases of mandibular reconstructions that involved virtually planned or conventional microvascular, fibular free flaps that occurred between April 2011 and December 2014 at a single center. The results were also compared with a healthy cohort of 30 participants. Axiographic measurements were performed postoperatively, and uni- and multivariate regressions analyses were performed to determine the association between possible predictor variables on functional outcome...
January 18, 2017: Journal of Reconstructive Microsurgery
https://www.readbyqxmd.com/read/28099937/inactivation-of-ck1%C3%AE-in-multiple-myeloma-empowers-drug-cytotoxicity-by-affecting-akt-and-%C3%AE-catenin-survival-signaling-pathways
#13
Sabrina Manni, Marilena Carrino, Martina Manzoni, Ketty Gianesin, Sara Canovas Nunes, Matteo Costacurta, Laura Quotti Tubi, Paolo Macaccaro, Elisa Taiana, Anna Cabrelle, Gregorio Barilà, Annalisa Martines, Renato Zambello, Laura Bonaldi, Livio Trentin, Antonino Neri, Gianpietro Semenzato, Francesco Piazza
Recent evidence indicates that protein kinase CK1α may support the growth of multiple myeloma (MM) plasma cells. Here, by analyzing a large cohort of MM cases, we found that high CK1α mRNA levels are virtually associated with all MM patients. Moreover, we provided functional evidence that CK1α activity is essential for malignant plasma cell survival even in the protective niche generated by co-cultures with bone marrow stromal cells. We demonstrated that CK1α inactivation, while toxic for myeloma cells, is dispensable for the survival of healthy B lymphocytes and stromal cells...
January 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28099914/advances-in-epigenetic-glioblastoma-therapy
#14
Dong Hoon Lee, Hyun-Wook Ryu, Hye-Rim Won, So Hee Kwon
Glioblastoma multiforme (GBM) is the most lethal primary brain tumor in adults despite contemporary gold-standard first-line treatment strategies. This type of tumor recurs in virtually all patients and no commonly accepted standard treatment exists for the recurrent disease. Therefore, advances in all scientific and clinical aspects of GBM are urgently needed. Epigenetic mechanisms are one of the major factors contributing to the pathogenesis of cancers, including glioblastoma. Epigenetic modulators that regulate gene expression by altering the epigenome and non-histone proteins are being exploited as therapeutic drug targets...
January 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28099762/human-transporters-pept1-2-facilitate-melatonin-transportation-into-mitochondria-of-cancer-cells-an-implication-of-the-therapeutic-potential
#15
Xiaokui Huo, Chao Wang, Zhenlong Yu, Yulin Peng, Shumei Wang, Shengnan Feng, Shouji Zhang, Xiangge Tian, Chengpeng Sun, Kexin Liu, Sa Deng, Xiaochi Ma
Melatonin is present in virtually all organisms from bacteria to mammals, and it exhibits a broad spectrum of biological functions, including synchronization of circadian rhythms and oncostatic activity. Several functions of melatonin are mediated by its membrane receptors but others are receptor-independent. For the latter, melatonin is required to penetrate membrane and enters intracellular compartments. However, the mechanism by which melatonin enters cells remains debatable. In the current study, it was identified that melatonin and its sulfation metabolites were the substrates of oligopeptide transporter (PEPT) 1/2 and organic anion transporter (OAT) 3, respectively...
January 18, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28099661/pharmaceutical-lobbying-in-brazil-a-missing-topic-in-the-public-health-research-agenda
#16
Francisco José Roma Paumgartten
In the US, where registration of lobbyists is mandatory, the pharmaceutical industry and private health-care providers spend huge amounts of money seeking to influence health policies and government decisions. In Brazil, where lobbying lacks transparency, there is virtually no data on drug industry expenditure to persuade legislators and government officials of their viewpoints and to influence decision-making according to commercial interests. Since 1990, however, the Associação da Indústria Farmacêutica de Pesquisa (Interfarma - Pharmaceutical Research Industry Association), Brazilian counterpart of the Pharmaceutical Research and Manufacturers of America (PhRMA), main lobbying organization of the US pharmaceutical industry, has played a major role in the advocacy of interests of major drug companies...
December 22, 2016: Revista de Saúde Pública
https://www.readbyqxmd.com/read/28099451/drawbacks-of-dialysis-procedures-for-removal-of-edta
#17
Andreia Mónico, Eva Martínez-Senra, F Javier Cañada, Silvia Zorrilla, Dolores Pérez-Sala
Ethylenediaminetetraacetic acid (EDTA) is a chelating agent commonly used in protein purification, both to eliminate contaminating divalent cations and to inhibit protease activity. For a number of subsequent applications EDTA needs to be exhaustively removed. Most purification methods rely in extensive dialysis and/or gel filtration in order to exchange or remove protein buffer components, including metal chelators. We report here that dialysis protocols, even as extensive as those typically employed for protein refolding, may not effectively remove EDTA, which is reduced only by approximately two-fold and it also persists after spin-column gel filtration, as determined by NMR and by colorimetric methods...
2017: PloS One
https://www.readbyqxmd.com/read/28099084/mechanisms-and-new-strategies-for-primary-sj%C3%A3-gren-s-syndrome
#18
Clio P Mavragani
Primary Sjögren's syndrome (SS) is a common chronic autoimmune disease characterized by lymphocytic infiltration of exocrine glands, mainly salivary and lacrimal, resulting in oral and ocular dryness, although virtually any organ system can be affected. SS-related systemic manifestations are classified as either related to the presence of periepithelial infiltrates in exocrine and parenchymal organs or resulting from immunocomplex deposition due to B cell hyperactivity with increased risk for B cell lymphoma development...
January 14, 2017: Annual Review of Medicine
https://www.readbyqxmd.com/read/28098503/relationship-between-perceived-competence-and-performance-during-real-and-virtual-motor-tasks-by-children-with-developmental-coordination-disorder
#19
Batya Engel-Yeger, Rotem Sido, Aviva Mimouni-Bloch, Patrice L Weiss
PURPOSE: (i) To compare children with DCD and typically developing participants via standard motor assessments, two interactive virtual games, measures of physical, social and cognitive self-competence and feedback while playing the virtual games and (ii) To examine the contribution of age and each motor assessment to predict self-competence. METHODS: Participants were 25 boys with DCD and 25 typically developing boys, aged 5-9 years. They completed the M-ABC-2, the Pictorial Scale of Perceived Competence, the 6-Minute Walk Test, and then played the two Kinect games and completed the Short Feedback Questionnaire for Children...
January 18, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/28098426/dapagliflozin-in-patients-with-type-1-diabetes-a-post-hoc-analysis-of-the-effect-of-insulin-dose-adjustments-on-24-hour-continuously-monitored-mean-glucose-and-fasting-beta-hydroxybutyrate-levels-from-a-phase-iia-pilot-study
#20
Robert R Henry, Paresh Dandona, Jeremy Pettus, Sunder Mudaliar, John Xu, Lars Hansen
AIMS: To investigate the effects of total daily insulin dose (TDD) reductions on 24-hour continuously monitored mean glucose and fasting beta-hydroxybutyrate (a marker for diabetic ketosis/ketoacidosis [DKA]) using patient-level data from a 14-day, pilot study of dapagliflozin in type 1 diabetes. MATERIALS AND METHODS: Exploratory correlation analysis was performed post-hoc to determine the relationship between change in TDD and a) 24-hour mean glucose (by continuous glucose monitoring) and b) fasting beta-hydroxybutyrate, in 70 patients with type 1 diabetes receiving insulin and dapagliflozin (1-, 2...
January 18, 2017: Diabetes, Obesity & Metabolism
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