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https://www.readbyqxmd.com/read/28227760/cross-frequency-coupling-during-auditory-perception-in-human-cortex
#1
Urszula Malinowska, Dana Boatman-Reich, Urszula Malinowska, Dana Boatman-Reich, Urszula Malinowska, Dana Boatman-Reich
Cross-frequency coupling plays an important role in coordinating neuronal computations underlying human perception, learning and memory. Here we compared four methods for measuring phase/amplitude coupling (PAC) of theta (4-7 Hz) and high-gamma (70-150 Hz) in intracranial electrocorticographic (ECoG) recordings. Time-frequency spectral and time-domain evoked responses were derived for comparison. All four methods showed significant increases in theta/high-gamma PAC in auditory cortex at sites where significant event-related increases in high-gamma power were also observed...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227759/mining-cross-frequency-coupling-microstates-cfc%C3%AE-states-from-eeg-recordings-during-resting-state-and-mental-arithmetic-tasks
#2
Stavros I Dimitriadis, Yu Sun, Nitish Thakor, Anastasios Bezerianos, Stavros I Dimitriadis, Yu Sun, Nitish Thakor, Anastasios Bezerianos, Stavros I Dimitriadis, Yu Sun, Nitish Thakor, Anastasios Bezerianos
The functional brain connectivity has been studied by analyzing synchronization between dynamic oscillations of identical frequency or between different frequencies of distinct brain areas. It has been hypothesized that cross-frequency coupling (CFC) between different frequency bands is the carrier mechanism for the coordination of global and local neural processes and hence supports the distributed information processing in the brain. In the present study, we attempt to study the dynamic evolution of CFC at resting-state and during a mental task...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227206/effects-of-phase-aberration-correction-methods-on-the-minimum-variance-beamformer
#3
Gustavo R Chau, Jeremy J Dahl, Roberto J Lavarello, Gustavo R Chau, Jeremy J Dahl, Roberto J Lavarello, Gustavo R Chau, Roberto J Lavarello
The minimum variance (MV) beamformer is a method that has the potential to enhance the resolution and contrast of ultrasound images. However, it suffers from sensitivity to speed of sound errors and aberration. Although there have been several studies on the application of phase aberration correction (PAC) methods to conventional delay-and-sum (DAS) beamforming, the benefits of PAC methods in mitigating the effects of phase aberration in MV beamformed images are not well understood. A study of this type would be helpful in designing a robust beamformer based on PAC knowledge present in the literature...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226672/phase-amplitude-coupling-analysis-for-seizure-evolvement-using-hilbert-huang-transform
#4
Hanyue Zhou, Ying Li, Yue-Loong Hsin, Wentai Liu, Hanyue Zhou, Ying Li, Yue-Loong Hsin, Wentai Liu, Wentai Liu, Hanyue Zhou, Ying Li, Yue-Loong Hsin
Recent studies show that the phase-amplitude coupling (PAC) may play a functional role in information processing and cognition. The conventional method for PAC analysis is implemented by using Fourier-based filters, which assumes the signal is stationary and linear. However, as biological signals are nonstationary and nonlinear, this method introduces inaccuracy. To solve this problem, a new method based on Hilbert Huang Transform (HHT) is proposed in this paper, and is applied to analyze intracranial signals from two epilepsy patients...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226517/phase-to-amplitude-coupling-as-a-potential-biomarker-for-creative-ideation-an-eeg-study
#5
Mina Marmpena, Stavros I Dimitriadis, Nitish Thakor, Anastasios Bezerianos, Mina Marmpena, Stavros I Dimitriadis, Nitish Thakor, Anastasios Bezerianos, Stavros I Dimitriadis, Mina Marmpena, Nitish Thakor, Anastasios Bezerianos
The most consistent finding of creative ideation in the neuroscientific study of creativity is the increment of EEG α power. However, the majority of existing studies focused only on ERP experimental paradigms while only a few analyzed time-related changes of EEG α power patterns during the time unlocked creation of ideas. Here, we designed an experimental paradigm where the participants were asked to generate alternative uses of everyday objects (AU task). For the control task, we adopted an Object Characteristics (OC) task, for which participants were asked to list typical characteristics or properties of an object...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226249/micro-milling-of-spent-granular-activated-carbon-for-its-possible-reuse-as-an-adsorbent-remaining-capacity-and-characteristics
#6
Long Pan, Yuichi Takagi, Yoshihiko Matsui, Taku Matsushita, Nobutaka Shirasaki
We milled granular activated carbons (GACs) that had been used for 0-9 years in water treatment plants and produced carbon particles with different sizes and ages: powdered activated carbons (PAC, median diameter 12-42 μm), superfine PAC (SPAC, 0.9-3.5 μm), and submicron-sized SPAC (SSPAC, 220-290 nm). The fact that SPAC produced from 1-year-old GAC and SSPAC from 2-year-old GAC removed 2-methylisoborneol (MIB) from water with an efficiency similar to that of virgin PAC after a carbon contact time of 30 min suggests that spent GAC could be reused for water treatment after being milled...
February 14, 2017: Water Research
https://www.readbyqxmd.com/read/28219631/condyle-excursion-angle-articular-eminence-inclination-and-temporomandibular-joint-morphologic-relations-with-disc-displacement
#7
Katharina Alves Rabelo, Saulo Leonardo Sousa Melo, Marianna Guanaes Gomes Torres, Paulo Sérgio F Campos, Patrícia Meira Bento, Daniela Pita de Melo
PURPOSE: The aim of this study was to evaluate the relations of the condyle excursion angle (CEA) and the morphology and morphometry of the articular eminence to disc displacement (DD) using magnetic resonance imaging (MRI) of symptomatic patients. MATERIALS AND METHODS: MRIs of 199 temporomandibular joints (TMJs) were evaluated. Qualitative and quantitative morphologic analyses were performed with tools available in PACS 11.0 (Carestream Health, Inc, Rochester, NY)...
January 29, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28215349/the-complete-mitochondrial-genome-of-the-conifer-needle-endophyte-phialocephala-scopiformis-daomc-229536-confirms-evolutionary-division-within-the-fungal-phialocephala-fortinii-s-l-%C3%A2-%C3%A2-acephala-appalanata-species-complex
#8
Brent M Robicheau, Alexander P Young, Kurt LaButti, Igor V Grigoriev, Allison K Walker
Despite the recent surge in mitochondrial (mt) genome sequencing, Kingdom Fungi remains underrepresented with respect to mtDNA. We describe the mt genome of the conifer needle endophyte, Phialocephala scopiformis DAOMC 229536 (Helotiales, Ascomycota). This strain is of interest to the Canadian forestry industry as it produces the anti-insectan compound rugulosin. Sequence was obtained from whole genome shotgun sequencing. Comparison to the only other published Phialocephala mt genome, Phialocephala subalpina, indicates that the suite of common mt genes - cox1-3, cob, nad1-6 and 4L, atp6, 8 and 9, as well as rrnL and rrnS - has retained an identical order...
March 2017: Fungal Biology
https://www.readbyqxmd.com/read/28214398/effects-of-recirculation-in-a-three-tank-pilot-scale-system-for-pharmaceutical-removal-with-powdered-activated-carbon
#9
Victor Kårelid, Gen Larsson, Berndt Björlenius
The removal of pharmaceutically active compounds by powdered activated carbon (PAC) in municipal wastewater is a promising solution to the problem of polluted recipient waters. Today, an efficient design strategy is however lacking with regard to high-level overall, and specific, substance removal in the large scale. The performance of PAC-based removal of pharmaceuticals was studied in pilot-scale with respect to the critical parameters; contact time and PAC dose using one PAC product selected by screening in bench-scale...
February 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28210898/flow-cytometric-analysis-reveals-the-high-levels-of-platelet-activation-parameters-in-circulation-of-multiple-sclerosis-patients
#10
Agnieszka Morel, Joanna Rywaniak, Michał Bijak, Elżbieta Miller, Marta Niwald, Joanna Saluk
The epidemiological studies confirm an increased risk of cardiovascular disease in multiple sclerosis, especially prothrombotic events directly associated with abnormal platelet activity. The aim of our study was to investigate the level of blood platelet activation in the circulation of patients with chronic phase of multiple sclerosis (SP MS) and their reactivity in response to typical platelets' physiological agonists. We examined 85 SP MS patients diagnosed according to the revised McDonald's criteria and 50 healthy volunteers as a control group...
February 16, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28209623/access-to-contraception-and-sexual-and-reproductive-health-information-post-abortion-a-systematic-review-of-literature-from-low-and-middle-income-countries
#11
REVIEW
Claire Rogers, Jaya A R Dantas
AIM: This systematic literature review documented, analysed and critiqued the accessibility of contraception and sexual and reproductive health (SRH) information for women living in low- and middle-income countries who have undergone medical or surgical abortion. METHODOLOGY: This review systematically collated relevant and recent empirical evidence regarding women's access to contraception and SRH information post-abortion within low- and middle-income countries...
February 16, 2017: Journal of Family Planning and Reproductive Health Care
https://www.readbyqxmd.com/read/28207520/characterization-of-ocular-biometrics-and-aqueous-humor-dynamics-in-primary-angle-closure-suspects
#12
Li Guo, Yuan Deng, Li Fang, Chaoqi Liu, Tao Guo
Detailed characterizations of ocular biometrics and parameters of aqueous humor dynamics are lacking in primary angle closure suspect (PACS) patients. This study aims to characterize these parameters and compare them with age-matched healthy volunteers.Elderly healthy volunteers (60.6 ± 7.2 years of age, mean ± SD, n = 28) and PACS patients (64.1 ± 11.6 years, n = 30) completed the study. Parameters investigated were axial length (AXL), anterior chamber depth (ACD), anterior chamber volume (ACV), central cornea thickness (CCT), intraocular pressure (IOP), aqueous flow (Fa), outflow facility (C), episcleral venous pressure (EVP), and uveoscleral outflow (Fu)...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28207519/influence-of-sleep-disorders-on-somatic-symptoms-mental-health-and-quality-of-life-in-patients-with-chronic-constipation
#13
Ya Jiang, Yu-Rong Tang, Chen Xie, Ting Yu, Wen-Jie Xiong, Lin Lin
BACKGROUND: Sleep disturbance is a common symptom in CC patients, and it is positively related to greater somatic and psychiatric symptoms. METHODS: The participants were 126 adult outpatients with CC. The measures were: constipation-Constipation Scoring System (CSS) and Patient Assessment of Constipation-Symptoms (PAC-SYM); sleep-Pittsburgh Sleep Quality Index (PSQI); anxiety-General Anxiety Disorder-7 (GAD-7); depression-Patient Health Questionnaire-9 (PHQ-9); and QOL-Patient Assessment of Constipation Quality of Life (PAC-QOL) and SF-36...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28199339/presence-of-%C3%A2-isolated%C3%A2-tricuspid-regurgitation-should-prompt-the-suspicion-of-heart-failure-with-preserved-ejection-fraction
#14
Julia Mascherbauer, Andreas A Kammerlander, Caroline Zotter-Tufaro, Stefan Aschauer, Franz Duca, Daniel Dalos, Susanne Winkler, Matthias Schneider, Jutta Bergler-Klein, Diana Bonderman
BACKGROUND: Diastolic dysfunction of the left ventricle is common but frequently under-diagnosed. Particularly in advanced stages affected patients may present with significant functional tricuspid regurgitation (TR) as the most prominent sign on echocardiography. The underlying left ventricular pathology may eventually be missed and symptoms of heart failure are attributed to TR, with respective therapeutic consequences. The aim of the present study was to determine prevalence and mechanisms underlying TR evolution in heart failure with preserved ejection fraction (HFpEF)...
2017: PloS One
https://www.readbyqxmd.com/read/28196929/pda-points-to-consider-technical-product-lifecycle-management-pharmaceutical-quality-system-effectiveness-for-managing-post-approval-changes
#15
Emma Ramnarine, Ursula Busse, Franck Chassant, Marcello Colao, Julia Edwards, Kevin O'Donnell, Maik Jornitz, Morten Munk, Melissa Seymour, Mihaela Simianu, Lisa Skeens, Anders Vinther
The International Council for Harmonisation Quality Guideline 10 (ICH Q10) describes the Pharmaceutical Quality System (PQS), indicating it is intended to apply throughout a product's lifecycle, in conjunction with good manufacturing practice (GMP) requirements, in order to achieve quality in a consistent and reproducible manner. Implementation of an effective PQS is essential for a company to achieve product realization, establish and maintain a state of control, and facilitate continual improvement (1). When changes are made during the commercial life of a product, an effective PQS, product and process understanding, and use of quality risk management should ensure that product quality, patient safety, and adequate supply to patients are maintained; this, according to ICH Q10-Annex 1, should provide companies the opportunity to manage post-approval changes (PAC) with reduced regulatory oversight (1)...
February 14, 2017: PDA Journal of Pharmaceutical Science and Technology
https://www.readbyqxmd.com/read/28194513/clinical-use-of-mri-for-the-evaluation-of-acute-appendicitis-during-pregnancy
#16
Darshan Patel, Jordan Fingard, Sean Winters, Gavin Low
PURPOSE: The purpose of this study was to determine the diagnostic accuracy of MRI for detecting acute appendicitis in pregnancy in a multi-institution study involving general body MR readers with no specific expertise in MR imaging of the pregnant patient. METHODS: Retrospective review of MRI examinations on PACS in 42 pregnant patients was evaluated for acute right lower quadrant pain. Three fellowship-trained general body radiologists analyzed the MRI examinations in consensus and attempted to localize the appendix, assess for features of appendicitis, and exclude alternative etiologies for the right lower quadrant pain...
February 13, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28190975/reduced-platelet-hyper-reactivity-and-platelet-leukocyte-aggregation-after-periodontal-therapy
#17
Efthymios Arvanitidis, Sergio Bizzarro, Elena Alvarez Rodriguez, Bruno G Loos, Elena A Nicu
BACKGROUND: Platelets from untreated periodontitis patients are hyper-reactive and form more platelet-leukocyte complexes compared to cells from individuals without periodontitis. It is not known whether the improvement of the periodontal condition achievable by therapy has beneficial effects on the platelet function. We aimed to assess the effects of periodontal therapy on platelet reactivity. METHODS: Patients with periodontitis (n = 25) but unaffected by any other medical condition or medication were included and donated blood before and after periodontal therapy...
2017: Thrombosis Journal
https://www.readbyqxmd.com/read/28188931/percutaneous-left-atrial-appendage-closure-improves-left-atrial-mechanical-function-through-frank-starling-mechanism
#18
Augustin Coisne, Rosario Pilato, François Brigadeau, Didier Klug, Christelle Marquie, Zouheir Souissi, Marjorie Richardson, Stéphanie Mouton, Anne-Sophie Polge, Patrizio Lancellotti, Dominique Lacroix, David Montaigne
BACKGROUND: Modifications in left atrial (LA) flow velocities after left atrial appendage (LAA) exclusion have been shown in animal and ex vivo models. In a substudy of the PROTECT AF, an objective improvement in quality of life was observed after LAA closure. OBJECTIVE: We aimed to investigate the impact of LAA closure on LA transport function METHODS: Comprehensive Transthoracic echocardiography (TTE) evaluation (2D/3D, 2D speckle tracking) was prospectively performed before and after LAA closure (at discharge and 45 days after procedure) in 33 patients...
February 7, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28188867/bombyx-mori-serpin6-regulates-prophenoloxidase-activity-and-the-expression-of-antimicrobial-proteins
#19
Bing Li, Hai-Zhong Yu, Chong-Jun Ye, Yan Ma, Xing Li, Tao Fan, Fu-Sheng Chen, Jia-Ping Xu
Serpins are a family of serine protease inhibitors that are found widely in insects. They play an important role in insect physiological responses, such as innate immunity and development. In this study, we obtained the Bombyx mori serpin6 (BmSerpin6) sequence from National Center for Biotechnology Information (NCBI) and the silkworm genome database (SilkDB). Reverse transcription PCR (RT-PCR) results showed that BmSerpin6 was expressed highly in hemocytes, the midgut, and the fat body. After challenging with Micrococcus luteus (Mi) and Serratia marcescens (Sm), the BmSerpin6 expression level was induced significantly...
February 8, 2017: Gene
https://www.readbyqxmd.com/read/28188483/integrating-cad-modules-in-a-pacs-environment-using-a-wide-computing-infrastructure
#20
Jorge J Suárez-Cuenca, Amara Tilve, Ricardo López, Gonzalo Ferro, Javier Quiles, Miguel Souto
PURPOSE: The aim of this paper is to describe a project designed to achieve a total integration of different CAD algorithms into the PACS environment by using a wide computing infrastructure. METHODS: The aim is to build a system for the entire region of Galicia, Spain, to make CAD accessible to multiple hospitals by employing different PACSs and clinical workstations. The new CAD model seeks to connect different devices (CAD systems, acquisition modalities, workstations and PACS) by means of networking based on a platform that will offer different CAD services...
February 10, 2017: International Journal of Computer Assisted Radiology and Surgery
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