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https://www.readbyqxmd.com/read/28227966/real-time-evaluation-of-a-myoelectric-control-method-for-high-level-upper-limb-amputees-based-on-homologous-leg-movements
#1
Kenneth R Lyons, Sanjay S Joshi, Kenneth R Lyons, Sanjay S Joshi, Sanjay S Joshi, Kenneth R Lyons
Electromyography-based gesture classification methods for control of advanced upper limb prostheses are limited either to individuals with amputations distal to the elbow or to those willing to undergo targeted muscle reinnervation surgery. Based on the natural similarity between gestures of the lower leg and the arm and on established methods in electromyography-based gesture classification, we propose a noninvasive system with which users control an upper limb prosthesis via homologous movements of the leg and foot...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227944/classification-of-squat-quality-with-inertial-measurement-units-in-the-single-leg-squat-mobility-test
#2
Rezvan Kianifar, Alex Lee, Sachin Raina, Dana Kulic, Rezvan Kianifar, Alex Lee, Sachin Raina, Dana Kulic, Alex Lee, Sachin Raina, Dana Kulic, Rezvan Kianifar
Many assessment and diagnosis protocols in rehabilitation, orthopedic surgery and sports medicine rely on mobility tests like the Single Leg Squat (SLS). In this study, a set of three Inertial Measurement Units (IMUs) were used to estimate the joint pose during SLS and to classify the SLS as poor, moderate or good. An Extended Kalman Filter pose estimation method was used to estimate kinematic joint variables, and time domain features were generated based on these variables. The most important features were then selected and used to train Support Vector Machine (SVM), Linear Multinomial Logistic Regression, and Decision Tree classifiers...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227942/unified-phase-variables-of-relative-degree-two-for-human-locomotion
#3
Dario J Villarreal, Robert D Gregg, Dario J Villarreal, Robert D Gregg, Robert D Gregg, Dario J Villarreal
A starting point to achieve stable locomotion is synchronizing the leg joint kinematics during the gait cycle. Some biped robots parameterize a nonlinear controller (e.g., input-output feedback linearization) whose main objective is to track specific kinematic trajectories as a function of a single mechanical variable (i.e., a phase variable) in order to allow the robot to walk. A phase variable capable of parameterizing the entire gait cycle, the hip phase angle, has been used to control wearable robots and was recently shown to provide a robust representation of the phase of human gait...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227898/automatic-assessment-of-medication-states-of-patients-with-parkinson-s-disease-using-wearable-sensors
#4
Murtadha D Hssayeni, Michelle A Burack, Behnaz Ghoraani, Murtadha D Hssayeni, Michelle A Burack, Behnaz Ghoraani, Behnaz Ghoraani, Michelle A Burack, Murtadha D Hssayeni
Motor fluctuations are a major focus of clinical managements in patients with mid-stage and advance Parkinson's disease (PD). In this paper, we develop a new patient-specific algorithm that can classify those fluctuations during a variety of activities. We extract a set of temporal and spectral features from the ambulatory signals and then introduce a semi-supervised classification algorithm based on K-means and self-organizing tree map clustering methods. Two different types of cluster labeling are introduced: hard and fuzzy labeling...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227893/wearable-embroidered-muscle-activity-sensing-device-for-the-human-upper-leg
#5
R B Ribas Manero, A Shafti, B Michael, J Grewal, J Ll Ribas Fernandez, K Althoefer, M J Howard, R B Ribas Manero, A Shafti, B Michael, J Grewal, J Ll Ribas Fernandez, K Althoefer, M J Howard, K Althoefer, B Michael, A Shafti, J Ll Ribas Fernandez, J Grewal, M J Howard
Within the last decade, running has become one of the most popular physical activities in the world. Although the benefits of running are numerous, there is a risk of Running Related Injuries (RRIs) of the lower extremities. Electromyography (EMG) techniques have previously been used to study causes of RRIs, but the complexity of this technology limits its use to a laboratory setting. As running is primarily an outdoors activity, this lack of technology acts as a barrier to the study of RRIs in natural environments...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227743/mri-measures-of-fat-infiltration-in-the-lower-extremities-following-motor-incomplete-spinal-cord-injury-reliability-and-potential-implications-for-muscle-activation
#6
Andrew C Smith, Maria Knikou, Katrina L Yelick, Abigail R Alexander, Margaret M Murnane, Andrew A Kritselis, Paul J Houmpavlis, Jacob G McPherson, Marie Wasielewski, Mark A Hoggarth, James M Elliott, Andrew C Smith, Maria Knikou, Katrina L Yelick, Abigail R Alexander, Margaret M Murnane, Andrew A Kritselis, Paul J Houmpavlis, Jacob G McPherson, Marie Wasielewski, Mark A Hoggarth, James M Elliott, Margaret M Murnane, Paul J Houmpavlis, Katrina L Yelick, Mark A Hoggarth, Marie Wasielewski, James M Elliott, Maria Knikou, Jacob G McPherson, Abigail R Alexander, Andrew A Kritselis, Andrew C Smith
Muscle fat infiltration (MFI) is an expected consequence of incomplete spinal cord injury (iSCI). The MFI magnitude may have clinical value in determining functional recovery. However, there is a lack of understanding of how MFI relates to the volitional muscle activity in people with motor incomplete spinal cord injury (iSCI). Five iSCI and 5 uninjured age-matched control subjects participated in the study. In this preliminary study, we established the reliability of MFI quantification of select lower extremity muscles across different raters...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227654/preliminary-results-for-an-adaptive-pattern-recognition-system-for-novel-users-using-a-powered-lower-limb-prosthesis
#7
John A Spanias, Ann M Simon, Eric J Perreault, Levi J Hargrove, John A Spanias, Ann M Simon, Eric J Perreault, Levi J Hargrove, Eric J Perreault, John A Spanias, Ann M Simon, Levi J Hargrove
Powered prosthetic legs are capable of improving the gait of lower limb amputees. Pattern recognition systems for these devices allow amputees to transition between different locomotion modes in a way that is seamless and transparent to the user. However, the potential of these systems is diminished because they require large amounts of training data that is burdensome to collect. To reduce the effort required to acquire these data, we developed an adaptive pattern recognition system that automatically learns from subject-specific data as the user is ambulating...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227652/does-the-impedance-of-above-knee-powered-prostheses-need-to-be-adjusted-for-load-carrying-conditions
#8
Andrea Brandt, Ming Liu, He Helen Huang, Andrea Brandt, Ming Liu, He Helen Huang, He Helen Huang, Ming Liu, Andrea Brandt
Powered knee prostheses provide substantial advantages for amputees compared to traditional passive devices during basic walking tasks (i.e. level-ground, stairs, ramps), but the impedance control parameters are fixed. For environments that differ from the well-controlled setting of the clinic, amputees must compensate their gait patterns because fixed control parameters ideal for walking on level ground in the clinic do not meet real-life task demands. Load carriage is one instance where fixed control parameters may lead to undesired gait patterns and potentially result in injury...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227647/a-feasibility-study-of-depth-image-based-intent-recognition-for-lower-limb-prostheses
#9
Huseyin Atakan Varol, Yerzhan Massalin, Huseyin Atakan Varol, Yerzhan Massalin, Huseyin Atakan Varol, Yerzhan Massalin
This paper presents our preliminary work on a depth camera based intent recognition system intended for future use in robotic prosthetic legs. The approach infers the activity mode of the subject for standing, walking, running, stair ascent and stair descent modes only using data from the depth camera. Depth difference images are also used to increase the performance of the approach by discriminating between static and dynamic instances. After confidence map based filtering, simple features such as mean, maximum, minimum and standard deviation are extracted from rectangular regions of the frames...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227634/design-and-validation-of-a-wearable-drl-less-eeg-using-a-novel-fully-reconfigurable-architecture
#10
Ruhi Mahajan, Bashir I Morshed, Gavin M Bidelman, Ruhi Mahajan, Bashir I Morshed, Gavin M Bidelman, Bashir I Morshed, Ruhi Mahajan, Gavin M Bidelman
The conventional EEG system consists of a driven-right-leg (DRL) circuit, which prohibits modularization of the system. We propose a Lego-like connectable fully reconfigurable architecture of wearable EEG that can be easily customized and deployed at naturalistic settings for collecting neurological data. We have designed a novel Analog Front End (AFE) that eliminates the need for DRL while maintaining a comparable signal quality of EEG. We have prototyped this AFE for a single channel EEG, referred to as Smart Sensing Node (SSN), that senses brain signals and sends it to a Command Control Node (CCN) via an I(2)C bus...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227557/sudden-changes-in-walking-surface-compliance-evoke-contralateral-emg-in-a-hemiparetic-walker-a-case-study-of-inter-leg-coordination-after-neurological-injury
#11
Jeffrey Skidmore, Panagiotis Artemiadis, Jeffrey Skidmore, Panagiotis Artemiadis, Jeffrey Skidmore, Panagiotis Artemiadis
Gait impairment due to neurological disorders is a significant problem around the world. Despite the growing interest in using robotic devices for gait rehabilitation, their widespread use remains limited as there is no clear evidence that robot-assisted gait therapy is superior to traditional treadmill-based therapy. This work is a case study that focuses on investigating the existence of mechanisms of inter-leg coordination after neurological injury, and based on that, proposing novel methods for gait rehabilitation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227544/tolerance-of-neural-decoding-errors-for-powered-artificial-legs-a-pilot-study
#12
Fan Zhang, Ming Liu, He Huang, Fan Zhang, Ming Liu, He Huang, He Huang, Ming Liu, Fan Zhang
Neural-machine interface (NMI) decoding errors challenge the clinical value of neural control of powered artificial legs, because these errors can dangerously disturb the user's walking balance, cause stumbles or falls, and thus threaten the user's confidence and safety in prosthesis use. Although extensive research efforts have been made to minimize the NMI decoding error rate, none of the current approaches can completely eliminate the errors in NMI. This study aimed at improving the robustness of prosthesis control system against neural decoding errors by introducing a fault-tolerant control (FTC) strategy...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227543/fmg-based-body-motion-registration-using-piezoelectret-sensors
#13
Xiangxin Li, Qifang Zhuo, Xu Zhang, Oluwarotimi Williams Samuel, Zeyang Xia, Xiaoqing Zhang, Peng Fang, Guanglin Li, Xiangxin Li, Qifang Zhuo, Xu Zhang, Oluwarotimi Williams Samuel, Zeyang Xia, Xiaoqing Zhang, Peng Fang, Guanglin Li, Xu Zhang, Guanglin Li, Zeyang Xia, Peng Fang, Qifang Zhuo, Oluwarotimi Williams Samuel, Xiaoqing Zhang, Xiangxin Li
Body motion registration can provide plenty of muscle activity information of human beings, which is applicable in the control of human-computer interfaces or real devices. Forcemyography (FMG) is a method to register real-time body motions by measuring the radially directed force distributions that are generated by muscle contractions. In this work, we recorded FMG maps by using a novel type of sensor, the polymer-based piezoelectrets. With five piezoelectret sensor units attached on the surface of thigh muscles, four basic lower-limb motions, leg-raising, leg-dropping, knee-extension, and knee-flexion, were properly captured on four able-bodied subjects...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227529/development-of-sit-to-stand-and-stand-to-sit-training-system-for-hemiplegic-patients
#14
Ryoichiro Shiraishi, Hiroaki Kawamoto, Yoshiyuki Sankai, Ryoichiro Shiraishi, Hiroaki Kawamoto, Yoshiyuki Sankai, Ryoichiro Shiraishi, Yoshiyuki Sankai, Hiroaki Kawamoto
As one of the several characteristics of hemiplegic patients after stroke, the patients conduct sit-to-stand and stand-to-sit (STS) motion using their unaffected leg. The purpose of this study is to develop a STS motion support system for helping the patients decrease the difference of the usage ratio between the affected side and the unaffected side, and increase the usage of the affected leg. The developed system supports the STS motions by moving the seat linearly. The system also provides the user visual motor information for each leg by measuring the floor reaction force (FRF) during STS motions...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227494/localised-impedance-monitoring-device-for-the-remote-clinical-assessment-of-home-based-dialysis-patients
#15
A Montalibet, W Arkouche, P Bogonez Franco, S Bonnet, A Clarion, G Delhomme, C Gehin, S Gharbi, R Guillemaud, P Jallon, B Massot, P Pham, E Ribbe-Cornet, E McAdams, A Montalibet, W Arkouche, P Bogonez Franco, S Bonnet, A Clarion, G Delhomme, C Gehin, S Gharbi, R Guillemaud, P Jallon, B Massot, P Pham, E Ribbe-Cornet, E McAdams, B Massot, P Pham, A Montalibet, P Jallon, E Ribbe-Cornet, P Bogonez Franco, G Delhomme, S Bonnet, R Guillemaud, W Arkouche, A Clarion, C Gehin, S Gharbi, E McAdams
BioImpedance Spectroscopy (BIS) has been clinically used to determine the hydrational status of patients undergoing haemodialysis (HD). In the present project we are developing a calf-localised, integrated impedimetric device to periodically and conveniently measure and transmit information on the hydrational status of home-based patients to a remote clinic. Surprisingly, we have found that simple postural changes before or during measurement lead to significant fluid shifts in the lower leg that are as important and as long lasting as the effects of haemodialysis...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227459/leg-fluid-accumulation-during-prolonged-sitting
#16
Daniel Vena, Jonathan Rubianto, Milos Popovic, Azadeh Yadollahi, Daniel Vena, Jonathan Rubianto, Milos Popovic, Azadeh Yadollahi, Daniel Vena, Azadeh Yadollahi, Jonathan Rubianto, Milos Popovic
The accumulation of fluid in the legs due to sedentariness can be a health risk in extreme cases. Negative health impacts associated with leg fluid accumulation include leg edema and risk of blood clots. Furthermore, fluid accumulating in the legs is accompanied by fluid shift into the upper body which is also associated with health risks such as: increased blood pressure when lying down, respiratory problems in people with heart failure, and increased sleep apnea. Understanding the pattern by which fluid accumulates in the legs can aid in the development of devices for reducing leg fluid accumulation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227269/effect-of-oral-glucose-supplementation-on-surface-emg-during-fatiguing-dynamic-exercise
#17
Clare M Davidson, Giuseppe De Vito, Madeleine M Lowery, Clare M Davidson, Giuseppe De Vito, Madeleine M Lowery, Madeleine M Lowery, Giuseppe De Vito, Clare M Davidson
The aim of this study was to examine the effect of oral glucose supplementation on the surface electromyographic (sEMG) signal recorded during a dynamic, fatiguing exercise protocol. Five healthy subjects participated in the study. Blood glucose concentration and sEMG signals from five upper leg muscles were recorded during a cycling exercise performed at 70% VO2peak until task failure, on two separate occasions. Glucose was consumed at 15 minute intervals throughout one trial. The median frequency of the sEMG was observed to increase progressively throughout the exercise, with a greater increase in the with glucose condition...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227236/a-wheelchair-with-lever-propulsion-control-for-climbing-up-and-down-stairs
#18
Kai Sasaki, Yosuke Eguchi, Kenji Suzuki, Kai Sasaki, Yosuke Eguchi, Kenji Suzuki, Kenji Suzuki, Yosuke Eguchi, Kai Sasaki
This study proposes a novel stair-climbing wheelchair based on lever propulsion control using the human upper body. Wheelchairs are widely used as supporting locomotion devices for people with acquired lower limb disabilities. However, steps and stairs are critical obstacles to locomotion, which restrict their activities when using wheelchairs. Previous research focused on power-assisted, stair-climbing wheelchairs, which were large and heavy due to its large actuators and mechanisms. In the previous research, we proposed a wheelchair with lever propulsion mechanism and presented its feasibility of climbing up the stairs...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227235/split-belt-controllable-treadmill-with-differential-velocity-based-fall-stimulation-and-motion-analysis
#19
Yasutaka Nakashima, Hiroki Noutsuka, Takanori Fukui, Motoji Yamamoto, Yasutaka Nakashima, Hiroki Noutsuka, Takanori Fukui, Motoji Yamamoto, Takanori Fukui, Hiroki Noutsuka, Yasutaka Nakashima, Motoji Yamamoto
Amid trends toward aging populations in developed nations, the number of people requiring nursing care has increased markedly. Slips and falls during ordinary daily activities are a common cause of fractured bones and muscle injury. Several studies have analyzed the movements produced by artificially generated slip and fall stimuli, but few have investigated these stimuli. We analyzed lower-limb motion following a slip and fall stimulus produced using a pulled free-walking system consisting of a controllable split-belt treadmill, where a speed difference between the belts could be applied to produce a slipping motion...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227184/neuromotor-response-of-the-leg-muscles-following-a-supine-stand-retraining-with-without-neuromuscular-electrical-stimulation-training-intervention-for-individuals-with-sci-a-case-series
#20
Stephen Canton, Kamyar Momeni, Arvind Ramanujam, Erica Garbarini, Gail F Forrest, Stephen Canton, Kamyar Momeni, Arvind Ramanujam, Erica Garbarini, Gail F Forrest, Arvind Ramanujam, Gail F Forrest, Stephen Canton, Kamyar Momeni, Erica Garbarini
The goal of this paper is to study the effects of supine and stand retraining (SRT) interventions with and without multi muscle neuromuscular electrical stimulation (NMES) on the neuromuscular EMG responses of the leg muscles for individuals with motor complete SCI during walking on a body-weight support (BWS) treadmill. The main outcome variables were EMG amplitude, integrated EMG and co-contraction indices (co-excitation and co-activation) collected during a 10-minute walking treadmill trial. Data was analyzed for the first, fifth and tenth minute of walking...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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