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https://www.readbyqxmd.com/read/28227913/online-learning-of-gait-models-for-calculation-of-gait-parameters
#1
Jamie L S Waugh, Anton Trinh, Ryan R Mohammed, William E McIlroy, Dana Kulic, Jamie L S Waugh, Anton Trinh, Ryan R Mohammed, William E McIlroy, Dana Kulic, Jamie L S Waugh, Dana Kulic, Anton Trinh, William E McIlroy, Ryan R Mohammed
This paper proposes a novel approach for gait analysis from wearable sensing, based on an adaptive periodic model of any gait signal. The proposed method learns a model of the gait cycle during online measurement, using a continuous representation that can adapt to inter and intra-personal variability by creating an individualized model. Once the algorithm has converged to the input signal, key gait events can be identified relative to the estimated gait phase; these events can then be used to calculate gait parameters...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227840/virtual-reality-for-pediatric-neuro-rehabilitation-adaptive-visual-feedback-of-movement-to-engage-the-mirror-neuron-system
#2
Roopeswar Kommalapati, Konstantinos P Michmizos, Roopeswar Kommalapati, Konstantinos P Michmizos, Roopeswar Kommalapati, Konstantinos P Michmizos
Sensorimotor therapy gives optimal results when patients are cognitively engaged into highly repetitive tasks, a goal that most children find hard to pursue. This paper presents the key developments of our ongoing effort to design an interactive rehabilitation environment that motivates physically impaired children throughout their therapy. The continuous motivation is achieved by the system adapting fundamental therapeutic components to the performance of each child. The relevant movement is mirrored to an animated character projected in front of the child...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227795/simplified-realistic-human-head-model-for-simulating-tumor-treating-fields-ttfields
#3
Cornelia Wenger, Ze'ev Bomzon, Ricardo Salvador, Peter J Basser, Pedro C Miranda, Cornelia Wenger, Ze'ev Bomzon, Ricardo Salvador, Peter J Basser, Pedro C Miranda, Peter J Basser, Pedro C Miranda, Cornelia Wenger, Ricardo Salvador, Ze'ev Bomzon
Tumor Treating Fields (TTFields) are alternating electric fields in the intermediate frequency range (100-300 kHz) of low-intensity (1-3 V/cm). TTFields are an anti-mitotic treatment against solid tumors, which are approved for Glioblastoma Multiforme (GBM) patients. These electric fields are induced non-invasively by transducer arrays placed directly on the patient's scalp. Cell culture experiments showed that treatment efficacy is dependent on the induced field intensity. In clinical practice, a software called NovoTal(TM) uses head measurements to estimate the optimal array placement to maximize the electric field delivery to the tumor...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227673/colorimetric-determinations-of-lithium-levels-in-drop-volumes-of-human-plasma-for-monitoring-patients-with-bipolar-mood-disorder
#4
M Qassem, M Hickey, P A Kyriacou, M Qassem, M Hickey, P A Kyriacou, M Qassem, M Hickey, P A Kyriacou
Lithium preparations are considered the most reliable form of mood stabilizing medication for patients with Bipolar disorder. Nevertheless, lithium is a toxic element and its therapeutic range is extremely narrow, with levels of 0.61.0 mEq considered normal, whereas levels above 1.5 mEq are toxic. Thus unfortunately, many patients reach toxic levels that lead to unnecessary complications. It is believed that personal monitoring of blood lithium levels would benefit patients taking lithium medication. Therefore, our aim is to develop a personal lithium blood level analyzer for patients with bipolar mood disorder, and we report here our initial results of a colorimetric-based method used to test drop-volumes of human plasma that had been spiked with lithium...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227651/adaptive-control-of-powered-transfemoral-prostheses-based-on-adaptive-dynamic-programming
#5
Yue Wen, Ming Liu, Jennie Si, He Helen Huang, Yue Wen, Ming Liu, Jennie Si, He Huang, He Helen Huang, Yue Wen, Ming Liu, Jennie Si
In this study, we developed and tested a novel adaptive controller for powered transfemoral prostheses. Adaptive dynamic programming (ADP) was implemented within the prosthesis control to complement the existing finite state impedance control (FS-IC) in a prototypic active-transfemoral prosthesis (ATP). The ADP controller interacts with the human user-prosthesis system, observes the prosthesis user's dynamic states during walking, and learns to personalize user performance properties via online adaptation to meet the individual user's objectives...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227610/unraveling-fabrication-and-calibration-of-wearable-gas-monitor-for-use-under-free-living-conditions
#6
Yue Deng, Cheng Chen, Francis Tsow, Xiaojun Xian, Erica Forzani, Yue Deng, Cheng Chen, Francis Tsow, Xiaojun Xian, Erica Forzani, Yue Deng, Xiaojun Xian, Erica Forzani, Cheng Chen, Francis Tsow
Volatile organic compounds (VOC) are organic chemicals that have high vapor pressure at regular conditions. Some VOC could be dangerous to human health, therefore it is important to determine real-time indoor and outdoor personal exposures to VOC. To achieve this goal, our group has developed a wearable gas monitor with a complete sensor fabrication and calibration protocol for free-living conditions. Correction factors for calibrating the sensors, including sensitivity, aging effect, and temperature effect are implemented into a Quick Response Code (QR code), so that the pre-calibrated quartz tuning fork (QTF) sensor can be used with the wearable monitor under free-living conditions...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227577/blood-perfusion-display-based-on-video-pulse-wave
#7
Makoto Yoshizawa, Norihiro Sugita, Makoto Abe, Akira Tanaka, Kazuma Obara, Tsuyoshi Yamauchi, Noriyasu Homma, Tomoyuki Yambe, Makoto Yoshizawa, Norihiro Sugita, Makoto Abe, Akira Tanaka, Kazuma Obara, Tsuyoshi Yamauchi, Noriyasu Homma, Tomoyuki Yambe, Norihiro Sugita, Noriyasu Homma, Makoto Abe, Kazuma Obara, Tomoyuki Yambe, Makoto Yoshizawa, Akira Tanaka, Tsuyoshi Yamauchi
In this study, an easy system for monitoring dynamic blood perfusion patterns and the pulse wave velocity (PWV) has been developed by processing video images of a human body to assess blood circulation for daily management of physical conditions or for detecting persons in poor physical condition in public places. The experiment suggested that this tool can be used to easily evaluate the PWV; however, the obtained value from the video image of the face was about 1/10 of the standard value calculated from thick vessels...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227275/an-algorithm-for-automatic-detection-of-drowsiness-for-use-in-wearable-eeg-systems
#8
Kwai C A Patrick, Syed Anas Imtiaz, Stuart Bowyer, Esther Rodriguez-Villegas, Kwai C A Patrick, Syed Anas Imtiaz, Stuart Bowyer, Esther Rodriguez-Villegas, Kwai C A Patrick, Esther Rodriguez-Villegas, Stuart Bowyer
Lack of proper restorative sleep can induce sleepiness at odd hours making a person drowsy. This onset of drowsiness can be detrimental for the individual in a number of ways if it happens at an unwanted time. For example, drowsiness while driving a vehicle or operating heavy machinery poses a threat to the safety and wellbeing of individuals as well as those around them. Timely detection of drowsiness can prevent the occurrence of unfortunate accidents thereby improving road and work environment safety. In this paper, by analyzing the electroencephalographic (EEG) signals of human subjects in the frequency domain, several features across different EEG channels are explored...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227183/a-modular-closed-loop-platform-for-intracranial-stimulation-in-people-with-neurological-disorders
#9
Anish A Sarma, Britni Crocker, Sydney S Cash, Wilson Truccolo, Anish A Sarma, Britni Crocker, Sydney S Cash, Wilson Truccolo, Sydney S Cash, Wilson Truccolo, Anish A Sarma, Britni Crocker
Neuromodulation systems based on electrical stimulation can be used to investigate, probe, and potentially treat a range of neurological disorders. The effects of ongoing neural state and dynamics on stimulation response, and of stimulation parameters on neural state, have broad implications for the development of closed-loop neuro-modulation approaches. We describe the development of a modular, low-latency platform for pre-clinical, closed-loop neuromodulation studies with human participants. We illustrate the uses of the platform in a stimulation case study with a person with epilepsy undergoing neuro-monitoring prior to resective surgery...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226900/characterization-and-analysis-of-dynamic-implant-communication-channels-based-on-inhomogeneous-model
#10
Jingzhen Li, Yuhang Liu, Jingjing Ma, Zedong Nie, Lei Wang, Jingzhen Li, Yuhang Liu, Jingjing Ma, Zedong Nie, Lei Wang, Lei Wang, Zedong Nie, Jingjing Ma, Yuhang Liu, Jingzhen Li
Implant communication plays an important role in achieving information exchange among implantable devices in personal health care. In this paper, the characteristics of dynamic implant communication channels (ICCs) are studied by using a set of 30 inhomogeneous human body models (frames) which corresponded to one period of a walking motion. The gain variations of three different ICCs (from belly to head, right wrist, and right ankle) are investigated at 21MHz, 403.5MHz, and 2.45GHz, respectively. The results show that the ICC gain may be affected by body posture, body shadowing effect, multipath fading, and earth ground...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226637/person-specific-gesture-set-selection-for-optimised-movement-classification-from-emg-signals
#11
Adam Hartwell, Visakan Kadirkamanathan, Sean Anderson, Adam Hartwell, Visakan Kadirkamanathan, Sean Anderson, Adam Hartwell, Sean Anderson, Visakan Kadirkamanathan
Movement classification from electromyography (EMG) signals is a promising vector for improvement of human computer interaction and prosthetic control. Conventional work in this area typically makes use of expert knowledge to select a set of movements a priori and then design classifiers based around these movements. The disadvantage of this approach is that different individuals might have different sets of movements that would lead to high classification accuracy. The novel approach we take here is to instead use a data-driven diagnostic test to select a set of person-specific movements...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225843/-poverty-and-mental-disability-in-the-criminal-law-the-invisibles
#12
Ezequiel N Mercurio
In recent decades neuroscience research show the negative consequences of poverty in cognitive development. Environmental factors, such as material deprivation, exposure to stressful situations, violence, nutritional deprivation, environmental toxins may shape the developing brain. The changes of the structure and function of the brain since prenatal stages and their consequences can remain stable throughout the life cycle except early interventions are made. Research investigating have found significant link between child poverty and function and structural brain focusing on prefrontal cortex (i...
May 2016: Vertex: Revista Argentina de Psiquiatriá
https://www.readbyqxmd.com/read/28225462/validity-evidence-from-ratings-of-pediatric-interns-and-subinterns-on-a-subset-of-pediatric-milestones
#13
Teri L Turner, Vasudha L Bhavaraju, Ulana A Luciw-Dubas, Patricia J Hicks, Sara Multerer, Amanda Osta, Jennifer McDonnell, Sue Poynter, Daniel J Schumacher, Rebecca Tenney-Soeiro, Linda Waggoner-Fountain, Alan Schwartz
PURPOSE: To investigate evidence for validity of faculty members' pediatric milestone (PM) ratings of interns (first-year residents) and subinterns (fourth-year medical students) on nine subcompetencies related to readiness to serve as a pediatric intern in the inpatient setting. METHOD: The Association of Pediatric Program Directors Longitudinal Educational Assessment Research Network (APPD LEARN) and the National Board of Medical Examiners collaborated to investigate the utility of assessments of the PMs for trainees' performance...
February 21, 2017: Academic Medicine: Journal of the Association of American Medical Colleges
https://www.readbyqxmd.com/read/28225346/cd4-count-and-risk-of-anti-tuberculosis-drug-associated-cutaneous-reactions-in-hiv-infected-thai-patients
#14
L Boonyagars, P Hirunwiwatkul, C P Hurst
OBJECTIVES: Tuberculosis (TB) is a major cause of morbidity and mortality in human immunodeficiency virus (HIV) infected patients. However, anti-tuberculosis drugs can cause cutaneous adverse drug reactions (CADRs). This study was conducted to evaluate differences in CADR incidence between low and high CD4 cell count in patients with low and high CD4 cell count and to identify other risk factors for CADR in HIV-TB co-infected patients. DESIGN: In a retrospective cohort of adult HIV-TB co-infected patients receiving standard anti-tuberculosis treatment between January 2008 and December 2015 at Vajira Hospital, Bangkok, Thailand, baseline demographic, clinical characteristics and factors associated with CADRs, including CD4 cell count status, were collected...
March 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28225344/tuberculosis-among-the-homeless-should-we-change-the-strategy
#15
M Dias, R Gaio, P Sousa, M Abranches, M Gomes, O Oliveira, M Correia-Neves, E Ferreira, R Duarte
BACKGROUND: Tuberculosis (TB) is a major concern among high-risk populations such as the homeless. OBJECTIVES: To evaluate TB incidence and treatment outcomes among homeless patients in Portugal and to identify predictors of unsuccessful TB treatment outcomes among the homeless. DESIGN: This was a retrospective cohort study of all TB patients notified in Portugal from 2008 to 2014. Characteristics of homeless TB patients were assessed and predictors of unsuccessful TB treatment were determined using logistic regression...
March 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28224783/a-highly-stretchable-potentiometric-ph-sensor-fabricated-via-direct-laser-writing-machining-of-carbon-polyaniline-composite
#16
Rahim Rahimi, Manuel Ochoa, Ali Tamayol, Shahla Khalili, Ali Khademhosseini, Babak Ziaie
Development of stretchable sensors has recently attracted considerable attention. These sensors have been used in wearable and robotics applications such as personalized health-monitoring, motion detection, and human-machine interfaces. Herein, we report on a highly stretchable electrochemical pH sensor for wearable point-of-care applications that consists of a pH sensitive working and a liquid-junction-free reference electrode, in which the stretchable conductive interconnections are fabricated by laser carbonizing and micromachining of a polyimide sheet bonded to an Ecoflex substrate...
February 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28224422/satisfaction-of-village-doctors-with-the-township-and-village-health-services-integration-policy-in-the-western-minority-inhabited-areas-of-china
#17
Da Feng, Liang Zhang, Yuan-Xi Xiang, Dong-Lan Zhang, Ruo-Xi Wang, Shang-Feng Tang, Hang Fu, Bo-Yang Li
Township and Village Health Services Integration Management (TVHSIM) is an essential form of China's two-tiered health service integration plan at the township and village level. Its main purpose, also one of the target goals in China's new healthcare reform, is to gradually integrate rural health services and appropriately allocate rural health resources. This study aims to assess the village doctors' satisfaction with the TVHSIM and provide scientific base to further improve TVHSIM. A cross-sectional study was carried out in which 162 village doctors from Qinghai, Inner Mongolia and Xinjiang in western China were interviewed...
February 2017: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/28223228/drug-discovery-using-induced-pluripotent-stem-cell-models-of-neurodegenerative-and-ocular-diseases
#18
REVIEW
Sandy S C Hung, Shahnaz Khan, Camden Y Lo, Alex W Hewitt, Raymond C B Wong
The revolution of induced pluripotent stem cell (iPSC) technology provides a platform for development of cell therapy, disease modeling and drug discovery. Recent technological advances now allow us to reprogram a patient's somatic cells into induced pluripotent stem cells (iPSCs). Together with methods to differentiate these iPSCs into the disease-relevant cell types, we are now able to model disease in vitro using iPSCs. Importantly, this represents a robust in vitro platform using patient-specific cells, providing opportunity for personalized precision medicine...
February 13, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28223058/human-prevalence-of-the-spotted-fever-group-sfg-rickettsiae-in-endemic-zones-of-northwestern-colombia
#19
Andrés F Londoño, Leidy Y Acevedo-Gutiérrez, Diana Marín, Verónica Contreras, Francisco J Díaz, Gustavo Valbuena, Marcelo B Labruna, Marylin Hidalgo, Margarita Arboleda, Salim Mattar, Sergio Solari, Juan D Rodas
In February 2006, an outbreak of human rickettsiosis occurred in the municipality of Necoclí Colombia, with 35% of lethality. This episode was, followed by two more, one in the municipality of Los Cordobas in 2007 with a 54% of lethality and the other one in the municipality of Turbo in 2008 with 27% of lethality. The aim of this study was to perform serological tests in healthy persons to determine the seroprevalence of antibodies against spotted fever group (SFG) rickettsiae and develop a survey to study some infection risk-related factors...
February 9, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28222974/primary-health-care-attributes-and-responses-to-intimate-partner-violence-in-spain
#20
Isabel Goicolea, Paola Mosquera, Erica Briones-Vozmediano, Laura Otero-García, Marta García-Quinto, Carmen Vives-Cases
OBJECTIVE: This study provides an overview of the perceptions of primary care professionals on how the current primary health care (PHC) attributes in Spain could influence health-related responses to intimate partner violence (IPV). METHODS: A qualitative study was conducted using semi-structured interviews with 160 health professionals working in 16 PHC centres in Spain. Data were analysed using a qualitative content analysis. RESULTS: Four categories emerged from the interview analysis: those committed to the PHC approach, but with difficulties implementing it; community work relying on voluntarism; multidisciplinary team work or professionals who work together?; and continuity of care hindered by heavy work load...
February 18, 2017: Gaceta Sanitaria
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