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https://www.readbyqxmd.com/read/28227751/a-time-domain-frequency-selective-multivariate-granger-causality-approach
#1
Lutz Leistritz, Herbert Witte, Lutz Leistritz, Herbert Witte, Lutz Leistritz, Herbert Witte
The investigation of effective connectivity is one of the major topics in computational neuroscience to understand the interaction between spatially distributed neuronal units of the brain. Thus, a wide variety of methods has been developed during the last decades to investigate functional and effective connectivity in multivariate systems. Their spectrum ranges from model-based to model-free approaches with a clear separation into time and frequency range methods. We present in this simulation study a novel time domain approach based on Granger's principle of predictability, which allows frequency-selective considerations of directed interactions...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227449/comparison-of-methods-for-the-evaluation-of-nibp-from-pulse-transit-time
#2
L Peter, N Noury, M Cerny, I Nykl, L Peter, N Noury, M Cerny, I Nykl, L Peter, I Nykl, N Noury, M Cerny
Non-invasive blood pressure measurement (NIBP) is one of the most discussed topic in cardiovascular medicine. Currently continuous measurement of blood pressure is possible by invasive methods, which makes the measurement impractical for Doctors and uncomfortable for the patients. It is possible to use special devices to measure blood pressure noninvasively continuously but there are still some problems with long time monitoring and comfort for patient. Physiologically there is connection between electrical and mechanical heart functions, propagation of pulse wave and blood pressure value...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227411/source-imaging-of-simple-finger-movements-captured-during-auditory-response-tasks-using-space-time-frequency-based-sparsity-constraints
#3
Aritra Chaudhuri, Aurobinda Routray, Aritra Chaudhuri, Aurobinda Routray, Aurobinda Routray, Aritra Chaudhuri
Neural Information Flow during simple cognitive or motor actions is a significant research topic; one of which is a simple finger movement. In this paper, Electro-encephalograph (EEG) Source Imaging has been used to model the Neural Information flow, during performance of a simple Auditory Response Task (ART), specifically by employment of a space-time-frequency sparsity constrained based algorithm, namely, Spatio-temporal Unifying Tomography (STOUT). The estimated sources are then studied according to location defined based on Destrieux atlas...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227403/abnormal-interhemispheric-resting-state-functional-connectivity-in-primary-open-angle-glaucoma
#4
Peng Zhou, Jieqiong Wang, Ting Li, Ningli Wang, Junfang Xian, Huiguang He, Peng Zhou, Jieqiong Wang, Ting Li, Ningli Wang, Junfang Xian, Huiguang He, Ningli Wang, Junfang Xian, Huiguang He, Ting Li, Jieqiong Wang, Peng Zhou
Glaucoma is the second leading cause of blindness and it has been the topic of massive studies to explore the underlying mechanisms of the disease. Resting-state neuroimaging studies have been widely applied to investigate the functional damage of the brain, but little is known about the alterations of the interhemispheric resting-state functional connectivity (RSFC) in patients with primary open-angle glaucoma (POAG). In the present study, we used a newly developed voxel-mirrored homotopic connectivity (VMHC) method to explore the interhemispheric RSFC of the brain in POAG patients...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227338/surface-electromyography-based-muscle-fatigue-analysis-for-stroke-patients-at-different-brunnstrom-stages
#5
Yinjun Tu, Zhe Zhang, Xudong Gu, Qiang Fang, Yinjun Tu, Zhe Zhang, Xudong Gu, Qiang Fang, Qiang Fang, Zhe Zhang, Yinjun Tu, Xudong Gu
Muscle fatigue analysis has been an important topic in sport and rehabilitation medicine due to its role in muscle performance evaluation and pathology investigation. This paper proposes a surface electromyography (sEMG) based muscle fatigue analysis approach which was specifically designed for stroke rehabilitation applications. 14 stroke patients from 5 different Brunnstrom recovery stage groups were involved in the experiment and features including median frequency and mean power frequency were extracted from the collected sEMG samples for investigation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227149/automated-and-reconfigurable-platform-for-niosome-generation-based-on-a-microfluidic-architecture
#6
Frederic Tessier, Myriam Laprise-Pelletier, Eric Boilard, Marc-Andre Fortin, Amine Miled, Frederic Tessier, Myriam Laprise-Pelletier, Eric Boilard, Marc-Andre Fortin, Amine Miled, Marc-Andre Fortin, Eric Boilard, Amine Miled, Frederic Tessier, Myriam Laprise-Pelletier
Drug delivery at the nano-scale is becoming an important topic in nano and regenerative medicine as it can offer a very localized therapy. Therefore, niosomes are one of the most important vehicles to release drug at the nanoscale. In this paper, we present a new automated microsystem for niosome generation on-demand. Used niosome were based on a mixture of cholesterol and dicetyl phosphate with chloroform. Three compact micropumps are connected to a microfluidic substrate in order to generate 100 nm noisome vesicles...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227053/the-effects-of-deep-network-topology-on-mortality-prediction
#7
Hao Du, Mohammad M Ghassemi, Mengling Feng, Hao Du, Mohammad M Ghassemi, Mengling Feng, Mengling Feng, Hao Du, Mohammad M Ghassemi
Deep learning has achieved remarkable results in the areas of computer vision, speech recognition, natural language processing and most recently, even playing Go. The application of deep-learning to problems in healthcare, however, has gained attention only in recent years, and it's ultimate place at the bedside remains a topic of skeptical discussion. While there is a growing academic interest in the application of Machine Learning (ML) techniques to clinical problems, many in the clinical community see little incentive to upgrade from simpler methods, such as logistic regression, to deep learning...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226789/detection-of-intention-of-pedaling-start-cycle-through-eeg-signals
#8
Marisol Rodriguez-Ugarte, Enrique Hortal, Alvaro Costa, Eduardo Ianez, Andres Ubeda, Jose M Azorin, Marisol Rodriguez-Ugarte, Enrique Hortal, Alvaro Costa, Eduardo Ianez, Andres Ubeda, Jose M Azorin, Eduardo Ianez, Enrique Hortal, Alvaro Costa, Andres Ubeda, Marisol Rodriguez-Ugarte, Jose M Azorin
Recovery from cerebrovascular accident (CVA) is a growing research topic. Exoskeletons are being used for this purpose in combination with a volitional control algorithm. This work studied the intention of pedaling initiation movement, based on previous work, with different types of electrode configuration and different processing time windows. The main characteristic is to find alterations in the mu and beta frequency bands where ERD/ERS is produced. The results show that for the majority of the subjects this event is well detected with 8 or 9 electrodes and using time before and after the movement onset...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226621/encoding-physiological-signals-as-images-for-affective-state-recognition-using-convolutional-neural-networks
#9
Guangliang Yu, Xiang Li, Dawei Song, Xiaozhao Zhao, Peng Zhang, Yuexian Hou, Bin Hu, Guangliang Yu, Xiang Li, Dawei Song, Xiaozhao Zhao, Peng Zhang, Yuexian Hou, Bin Hu, Xiaozhao Zhao, Yuexian Hou, Xiang Li, Bin Hu, Peng Zhang, Dawei Song, Guangliang Yu
Affective state recognition based on multiple modalities of physiological signals has been a hot research topic. Traditional methods require designing hand-crafted features based on domain knowledge, which is time-consuming and has not achieved a satisfactory performance. On the other hand, conducting classification on raw signals directly can also cause some problems, such as the interference of noise and the curse of dimensionality. To address these problems, we propose a novel approach that encodes different modalities of data as images and use convolutional neural networks (CNN) to perform the affective state recognition task...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226494/upper-extremity-prosthesis-user-perspectives-on-unmet-needs-and-innovative-technology
#10
Heather L Benz, Jia Yao, Laura Rose, Okan Olgac, Karen Kreutz, Anindita Saha, Eugene F Civillico, Heather L Benz, Jia Yao, Laura Rose, Okan Olgac, Karen Kreutz, Anindita Saha, Eugene F Civillico, Laura Rose, Heather L Benz, Anindita Saha, Okan Olgac, Eugene F Civillico, Karen Kreutz, Jia Yao
The needs of individuals with upper limb amputation and congenital limb difference are not being fully met by current prostheses, as evidenced by prosthesis rejection, non-wear, and user reports of pain and challenging activities. Emerging technologies such as dexterous sensorized robotic limbs, osseointegrated prostheses, implantable EMG electrodes, and electrical stimulation for sensory feedback have the potential to address unmet needs, but pose additional risks. We plan to assess upper limb prosthesis user needs and perspectives on these new benefits and risks using an extensive quantitative survey...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226414/methylene-blue-for-the-treatment-of-intractable-pain-associated-with-oral-mucositis
#11
Carlos J Roldan, Kent Nouri, Thomas Chai, Billy Huh
Oral mucositis is a common and often debilitating complication among cancer patients receiving radiation therapy to the head and neck or chemotherapy agents, or undergoing hematopoietic stem cell transplantation. Pain and decreased oral function associated with oral mucositis may persist long after the conclusion of therapy. Although most patients respond to conservative management, a subset of patients develop intractable pain with severe consequences. For some, the use of total parenteral nutrition with insertion of percutaneous endoscopic gastrostomy feeding tubes is the only alternative...
February 22, 2017: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/28226344/-diagnostic-criteria-and-risk-assessment-of-complications-after-gastric-cancer-surgery-in-western-countries
#12
Zhouqiao Wu, Qi Wang, Jinyao Shi, Koh Cherry, Jacopo Desiderio, Ziyu Li, Jiafu Ji
Postoperative complications are important outcome measurements for surgical quality and safety control. However, the complication registration has always been problematic due to the lack of definition consensus and the other practical difficulties. This narrative review summarizes the data registry system for single institutional registry, national data registry, international multi-center trial registries in the western world, aiming to share the experience of complication classification and data registration...
February 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28226245/subconjunctival-injectable-dendrimer-dexamethasone-gel-for-the-treatment-of-corneal-inflammation
#13
Uri Soiberman, Siva P Kambhampati, Tony Wu, Manoj K Mishra, Yumin Oh, Rishi Sharma, Jiangxia Wang, Abdul Elah Al Towerki, Samuel Yiu, Walter J Stark, Rangaramanujam M Kannan
Corneal inflammation is often encountered as a key pathological event in many corneal diseases. Current treatments involve topical corticosteroids which require frequent instillations due to rapid tear turnover, causing side-effects such as corneal toxicity and elevated intraocular pressure (IOP). Hence, new interventions that can reduce side effects, dosing frequency, and increase patient compliance can be highly beneficial. In this study, we explore a subconjunctival injectable gel based on G4-PAMAM dendrimer and hyaluronic acid, cross-linked using thiol-ene click chemistry, incorporated with dendrimer dexamethasone (D-Dex) conjugates as a potential strategy for sustained delivery and enhanced bioavailability of corticosteroids...
February 16, 2017: Biomaterials
https://www.readbyqxmd.com/read/28226058/health-literacy-for-people-living-with-hiv-aids-an-integrative-review
#14
Gilmara Holanda da Cunha, Marli Teresinha Gimeniz Galvão, Patrícia Neyva da Costa Pinheiro, Neiva Francenely Cunha Vieira
Objective: to analyze knowledge produced by research about health literacy for adult with HIV/Aids. Method: an integrative literature review, using six databases, was conducted between January and April of 2014. The descriptors aids and Health Literacy were used, in Portuguese, English and Spanish. A total of 130 articles were found and 14 were selected. Three categories were identified: educational technologies and health literacy for HIV/Aids; assessment of health literacy of patients with HIV/Aids; and health literacy and adherence to antiretroviral therapy...
January 2017: Revista Brasileira de Enfermagem
https://www.readbyqxmd.com/read/28225993/timing-of-thyroid-ultrasonography-in-the-etiological-investigation-of-congenital-hypothyroidism
#15
Maria de Fátima Borges, Nathalie de Almeida Sedassari, Anelise de Almeida Sedassari, Luis Ronan Marquez Ferreira de Souza, Beatriz Pires Ferreira, Beatriz Hallal Jorge Lara, Heloísa Marcelina Cunha Palhares
Objectives: To describe the findings of thyroid ultrasonography (T-US), its contribution to diagnose congenital hypothyroidism (CH) and the best time to perform it. Subjects and methods: Forty-four patients with CH were invited to undergo T-US and 41 accepted. Age ranged from 2 months to 45 years; 23 patients were females. All were treated with L-thyroxine; 16 had previously undergone scintigraphy and 30 had previous T-US, which were compared to current ones. Results: At the current T-US, the thyroid gland was not visualized in its normal topography in 10 patients (24...
February 13, 2017: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28225919/claudin-3-and-occludin-content-in-the-glands-of-colonic-mucosa-devoid-from-fecal-stream-submitted-to-topical-intervention-with-oil-extract-of-curcuma-longa
#16
Carlos Augusto Real Martinez, Caled Jaoudat Kadri, Danilo Toshio Kanno, Antônio José Tibúrcio Alves, Cláudio Saddy Rodrigues Coy, José Aires Pereira
Purpose: To evaluate the inflammatory intensity and measure the tissue content of the proteins claudin-3 and occludin in the colonic mucosa without fecal stream submit to intervention with curcumin. Methods: Thirty-six rats were submitted to a proximal colostomy and a distal mucous fistula and divided into two groups according to sacrifice to be performed two or four weeks. Each group was divided into three subgroups according daily application of enemas containing saline, curcumin at 50 mg/kg/day or 200 mg/kg/day...
January 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28225703/do-acute-hospitalised-patients-in-australia-have-a-different-body-mass-index-to-the-general-australian-population-a-point-prevalence-study
#17
Diane M Dennis, Vicki Carter, Michelle Trevenen, Jacinta Tyler, Luisa Perrella, Erika Lori, Ian Cooper
Objective The aim of the present study was to provide a current snapshot of the body mass index (BMI) of the entire patient cohort of an Australian tertiary hospital on one day and compare these data with current published Australian and state (Western Australia) population norms.Methods A single-centre prospective point prevalence study was performed whereby BMI was calculated following actual measurement of patient weight (nurse) and height (physiotherapist) on one day during 2015. Variables were summarised descriptively, and one-way analysis of variance was used to investigate the relationship between continuous BMI and hospital speciality...
February 23, 2017: Australian Health Review: a Publication of the Australian Hospital Association
https://www.readbyqxmd.com/read/28225574/the-future-of-environmental-microbiology-an-annotated-selection-of-world-wide-web-sites-relevant-to-the-topics-in-environmental-microbiology
#18
Lawrence P Wackett
No abstract text is available yet for this article.
February 2017: Environmental Microbiology Reports
https://www.readbyqxmd.com/read/28225541/perceived-barriers-to-adherence-to-tuberculosis-infection-control-measures-among-health-care-workers-in-the-dominican-republic
#19
Helena J Chapman, Bienvenido A Veras-Estévez, Jamie L Pomeranz, Eddy N Pérez-Then, Belkys Marcelino, Michael Lauzardo
INTRODUCTION Health care workers have an increased risk of infection due to occupational Mycobacterium tuberculosis exposure, including multidrug-resistant strains. Health care workers' risk of developing tuberculosis is greater than that of the general population, whether in low-, intermediate- or high-incidence countries. Adherence to infection control measures (administrative controls, environmental controls, and personal respiratory protection) is essential to reduce risk of disease transmission between suspected tuberculosis patients and health care workers, but for different reasons, both objective and subjective, adherence is low...
January 2017: MEDICC Review
https://www.readbyqxmd.com/read/28225461/faculty-development-for-medical-school-community-based-faculty-a-council-of-academic-family-medicine-educational-research-alliance-study-exploring-institutional-requirements-and-challenges
#20
Joanna Drowos, Suzanne Baker, Suzanne Leonard Harrison, Suzanne Minor, Alexander W Chessman, Dennis Baker
PURPOSE: Community-based faculty play a large role in training medical students nationwide and require faculty development. The authors hypothesized that positive relationships exist between clerkships paying preceptors and requiring faculty development, and between protected clerkship directors' time and delivering face-to-face preceptor training, as well as with the number or length of community-based preceptor visits. Through under standing the quantity, delivery methods, barriers, and institutional support for faculty development provided to community-based preceptors teaching in family medicine clerkships, best practices can be developed...
February 21, 2017: Academic Medicine: Journal of the Association of American Medical Colleges
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