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https://www.readbyqxmd.com/read/28336344/participation-restriction-in-people-with-multiple-sclerosis-prevalence-and-correlations-with-cognitive-walking-balance-and-upper-limb-impairments
#1
Davide Cattaneo, Ilse Lamers, Rita Bertoni, Peter Feys, Johanna Jonsdottir
OBJECTIVE: To calculate percentage of participation restrictions according to disability level in Multiple Sclerosis (MS) and to assess relationship between participation restriction, and cognitive, gait, balance and upper limb deficits. DESIGN: Cross sectional study SETTING: Rehabilitation unit PARTICIPANTS: 105 people with MS and 20 healthy subjects (HS) were screened in Belgium and Italy. INTERVENTIONS: Not applicable MAIN OUTCOME MEASURES: The Community integration questionnaire was used to assess participation in Home, Social and Productive Activities...
March 21, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28336243/hand-arm-vibration-syndrome-workers-experience-with-functional-impairment-and-disability
#2
Midori Handford, Kiera Lepine, Kristina Boccia, Francesca Ruddick, Darya Alyeksyeyeva, Aaron Thompson, D Linn Holness, Sharon Switzer-McIntyre
STUDY DESIGN: Qualitative and descriptive study. INTRODUCTION: Hand-arm vibration syndrome (HAVS) is a prevalent disease in Canada. There is little work on the perspectives of HAVS patients. PURPOSE OF THE STUDY: Explore perceptions of disability and functional compromise in patients with HAVS. METHODS: Semi-structured telephone interviews were conducted with HAVS patients and analysed using content analysis. RESULTS: The 11 participants reported numbness, pain, and reduced dexterity, strength, and sensation...
March 20, 2017: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/28295921/earlier-and-greater-hand-pre-shaping-in-the-elderly-a-study-based-on-kinematic-analysis-of-reaching-movements-to-grasp-objects
#3
Yoshiki Tamaru, Yasuo Naito, Takashi Nishikawa
BACKGROUND: Elderly people are less able to manipulate objects skilfully than young adults. Although previous studies have examined age-related deterioration of hand movements with a focus on the phase after grasping objects, the changes in the reaching phase have not been studied thus far. We aimed to examine whether changes in hand shape patterns during the reaching phase of grasping movements differ between young adults and the elderly. METHODS: Ten healthy elderly adults and 10 healthy young adults were examined using the Simple Test for Evaluating Hand Functions and kinetic analysis of hand pre-shaping reach-to-grasp tasks...
March 9, 2017: Psychogeriatrics: the Official Journal of the Japanese Psychogeriatric Society
https://www.readbyqxmd.com/read/28289680/synergy-repetition-training-versus-task-repetition-training-in-acquiring-new-skill
#4
Vrajeshri Patel, Jamie Craig, Michelle Schumacher, Martin K Burns, Ionut Florescu, Ramana Vinjamuri
Traditionally, repetitive practice of a task is used to learn a new skill, exhibiting as immediately improved performance. Research suggests, however, that a more experience-based rather than exposure-based training protocol may allow for better transference of the skill to related tasks. In synergy-based motor control theory, fundamental motor skills, such as hand grasping, are represented with a synergy subspace that captures essential motor patterns. In this study, we propose that motor-skill learning through synergy-based mechanisms may provide advantages over traditional task repetition learning...
2017: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/28285090/assessment-of-the-ipsilesional-hand-function-in-stroke-survivors-the-effect-of-lesion-side
#5
Bianca Pinto Cunha, Sandra Maria Sbeghen Ferreira de Freitas, Paulo Barbosa de Freitas
BACKGROUND: The aim of this study was to examine the effect of the side of brain lesion on the ipsilesional hand function of stroke survivors. METHODS: Twenty-four chronic stroke survivors, equally allocated in 2 groups according to the side of brain lesion (right or left), and 12 sex- and age-matched healthy controls performed the Jebsen-Taylor Hand Function Test (JTHFT), the Nine-Hole Peg Test (9HPT), the maximum power grip strength (PwGSmax) test, and the maximum pinch grip strength (PnGSmax) test...
March 8, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28278474/exploiting-knowledge-composition-to-improve-real-life-hand-prosthetic-control
#6
Gauravkumar Patel, Markus Nowak, Claudio Castellini
In myoelectric prosthesis control, one of the hottest topics nowadays is enforcing simultaneous and proportional (s/p) control over several degrees of freedom. This problem is particularly hard and the scientific community has so far failed to provide a stable and reliable s/p control, effective in daily-life activities. In order to improve the reliability of this form of control, in this work we propose on-the-fly knowledge composition, thereby reducing the burden of matching several patterns at the same time, and simplifying the task of the system...
March 1, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28275083/unilateral-cerebellothalamic-tract-ablation-in-essential-tremor-by-mri-guided-focused-ultrasound
#7
Sebastian R Schreglmann, Ronald Bauer, Stefan Hägele-Link, Kailash P Bhatia, Parashkev Natchev, Nikolas Wegener, Anita Lebeda, Beat Werner, Ernst Martin, Georg Kägi
OBJECTIVE: To report results of a prospective trial of unilateral transcranial MRI-guided focused ultrasound (MRIgFUS) ablation of the cerebellothalamic tract in essential tremor (ET). METHODS: This was a prospective, uncontrolled, single-center interventional study. Patients with ET fulfilling criteria for interventional therapy received unilateral ablation of the cerebellothalamic tract (CTT) by MRIgFUS. Motor symptoms, manual dexterity, cognition, and quality of life were assessed before intervention and at 48 hours and 1, 3, and 6 months after intervention...
March 8, 2017: Neurology
https://www.readbyqxmd.com/read/28269405/24-dof-emg-controlled-hybrid-actuated-prosthetic-hand
#8
A Atasoy, E Kaya, E Toptas, S Kuchimov, E Kaplanoglu, M Ozkan
A complete mechanical design concept of an electromyogram (EMG) controlled hybrid prosthetic hand, with 24 degree of freedom (DOF) anthropomorphic structure is presented. Brushless DC motors along with Shape Memory Alloy (SMA) actuators are used to achieve dexterous functionality. An 8 channel EMG is used for detecting 7 basic hand gestures for control purposes. The prosthetic hand will be integrated with the Neural Network (NNE) based controller in the next phase of the study.
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269396/investigation-of-a-passive-capstan-based-grasp-enhancement-feature-in-a-voluntary-closing-prosthetic-terminal-device
#9
Kevin D Gemmell, Michael T Leddy, Joseph T Belter, Aaron M Dollar
Body-powered prosthetic terminal devices fall into two main categories: voluntary-closing devices, which require the user to exert a force to maintain a grasp, and voluntary opening devices, which generally utilize springs to close and maintain a force. As a result, voluntary-closing devices often have a locking feature that allows the user to relax and transport objects while maintaining a firm grip. In this paper, we examine a new type of capstan-based passive brake mechanism in a voluntary-closing prosthetic terminal device...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269097/three-dimensional-modeling-of-physiological-tremor-for-hand-held-surgical-robotic-instruments
#10
Sivanagaraja Tatinati, Yan Naing Aye, Anand Pual, Wei Tech Ang, Kalyana C Veluvolu
Hand-held robotic instruments are developed to compensate physiological tremor in real-time while augmenting the required precision and dexterity into normal microsurgical work-flow. The hardware (sensors and actuators) and software (causal linear filters) employed for tremor identification and filtering introduces time-varying unknown phase-delay that adversely affects the device performance. The current techniques that focus on three-dimensions (3D) tip position control involves modeling and canceling the tremor in 3-axes (x, y, and z axes) separately...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268399/an-effective-3-fingered-augmenting-exoskeleton-for-the-human-hand
#11
C J Gearhart, B Varone, M H Stella, B F BuSha
Every year, thousands of Americans suffer from pathological and traumatic events that result in loss of dexterity and strength of the hand. Although many supportive devices have been designed to restore functional hand movement, most are very complex and expensive. The goal of this project was to design and implement a cost-effective, electrically powered exoskeleton for the human hand that could improve grasping strength. A 3-D printed thermoplastic exoskeleton that allowed independent and enhanced movement of the index, middle and ring fingers was constructed...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268341/an-ensemble-based-regression-approach-for-continuous-estimation-of-wrist-and-fingers-movements-from-surface-electromyography
#12
Rami Alazrai, Ala Khalifeh, Nasim Alnuman, Deena Alabed, Yaser Mowafi
Late development and evolution of high degree-of-freedom (DOF) robotic hands have seen great technological strides to enhance the quality of life for amputated people. A robust hand kinematic estimation mechanisms have shown promising results to control robotic hands that can mimic the human hand functions and perform daily life hand dexterous tasks. In this paper, we propose an ensemble-based regression approach for continuous estimation of wrist and fingers movements from surface Electromyography (sEMG) signals...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28267271/do-we-underestimate-influences-of-diabetic-mononeuropathy-or-polyneuropathy-on-hand-functional-performance-and-life-quality
#13
Chien-Ju Yang, Hsiu-Yun Hsu, Chieh-Hsiang Lu, Yen-Li Chao, Haw-Yen Chiu, Li-Chieh Kuo
AIMS/INTRODUCTION: The purpose of this study is to identify whether there are differences in hand dexterity, hand functional performance and quality of life between diabetes hands with mononeuropathy and polyneuropathy to further present the importance regarding impacts of diabetic neuropathic deficits on patient's functional capacity. MATERIALS AND METHODS: The neurological deficits of 127 patients with type 2 diabetes were examined by electrophysiological tests for the median and ulnar nerves and were stratified into the diabetic mononeuropathy, diabetic polyneuropathy and non-diabetic neuropathy groups by sensory amplitude of these nerves...
March 7, 2017: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/28237009/a-new-method-of-ergonomic-testing-of-gloves-protecting-against-cuts-and-stabs-during-knife-use
#14
Emilia Irzmańska, Tomasz Tokarski
The paper presents a new method of ergonomic evaluation of gloves protecting against cuts and stabs during knife use, consisting of five manual dexterity tests. Two of them were selected based on the available literature and relevant safety standards, and three were developed by the authors. All of the tests were designed to simulate occupational tasks associated with meat processing as performed by the gloved hand in actual workplaces. The tests involved the three most common types of protective gloves (knitted gloves made of a coverspun yarn, metal mesh gloves, and metal mesh gloves with an ergonomic polyurethane tightener) and were conducted on a group of 20 males...
May 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28229937/high-definition-transcranial-direct-current-stimulation-to-both-primary-motor-cortices-improves-unimanual-and-bimanual-dexterity
#15
Nils H Pixa, Fabian Steinberg, Michael Doppelmayr
While most research on brain stimulation with transcranial direct current stimulation (tDCS) targets unimanual motor tasks, little is known about its effects on bimanual motor performance. This study aims to investigate the effects of tDCS on unimanual as well as bimanual motor dexterity. We examined the effects of bihemispheric anodal high-definition tDCS (HD-atDCS) on both primary motor cortices (M1) applied concurrent with unimanual and bimanual motor training. We then measured the effects with the Purdue Pegboard Test (PPT) and compared them to a sham stimulation...
March 16, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28227648/24-dof-emg-controlled-hybrid-actuated-prosthetic-hand
#16
A Atasoy, E Kaya, E Toptas, S Kuchimov, E Kaplanoglu, M Ozkan, A Atasoy, E Kaya, E Toptas, S Kuchimov, E Kaplanoglu, M Ozkan, S Kuchimov, A Atasoy, M Ozkan, E Kaplanoglu, E Kaya, E Toptas
A complete mechanical design concept of an electromyogram (EMG) controlled hybrid prosthetic hand, with 24 degree of freedom (DOF) anthropomorphic structure is presented. Brushless DC motors along with Shape Memory Alloy (SMA) actuators are used to achieve dexterous functionality. An 8 channel EMG is used for detecting 7 basic hand gestures for control purposes. The prosthetic hand will be integrated with the Neural Network (NNE) based controller in the next phase of the study.
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227639/investigation-of-a-passive-capstan-based-grasp-enhancement-feature-in-a-voluntary-closing-prosthetic-terminal-device
#17
Kevin D Gemmell, Michael T Leddy, Joseph T Belter, Aaron M Dollar, Kevin D Gemmell, Michael T Leddy, Joseph T Belter, Aaron M Dollar, Joseph T Belter, Kevin D Gemmell, Michael T Leddy, Aaron M Dollar
Body-powered prosthetic terminal devices fall into two main categories: voluntary-closing devices, which require the user to exert a force to maintain a grasp, and voluntary opening devices, which generally utilize springs to close and maintain a force. As a result, voluntary-closing devices often have a locking feature that allows the user to relax and transport objects while maintaining a firm grip. In this paper, we examine a new type of capstan-based passive brake mechanism in a voluntary-closing prosthetic terminal device...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227320/three-dimensional-modeling-of-physiological-tremor-for-hand-held-surgical-robotic-instruments
#18
Sivanagaraja Tatinati, Yan Naing Aye, Anand Pual, Wei Tech Ang, Kalyana C Veluvolu, Sivanagaraja Tatinati, Yan Naing Aye, Anand Pual, Wei Tech Ang, Kalyana C Veluvolu, Sivanagaraja Tatinati, Anand Pual, Wei Tech Ang, Yan Naing Aye, Kalyana C Veluvolu
Hand-held robotic instruments are developed to compensate physiological tremor in real-time while augmenting the required precision and dexterity into normal microsurgical work-flow. The hardware (sensors and actuators) and software (causal linear filters) employed for tremor identification and filtering introduces time-varying unknown phase-delay that adversely affects the device performance. The current techniques that focus on three-dimensions (3D) tip position control involves modeling and canceling the tremor in 3-axes (x, y, and z axes) separately...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226567/an-effective-3-fingered-augmenting-exoskeleton-for-the-human-hand
#19
C J Gearhart, B Varone, M H Stella, B F BuSha, C J Gearhart, B Varone, M H Stella, B F BuSha, M H Stella, B F BuSha, B Varone, C J Gearhart
Every year, thousands of Americans suffer from pathological and traumatic events that result in loss of dexterity and strength of the hand. Although many supportive devices have been designed to restore functional hand movement, most are very complex and expensive. The goal of this project was to design and implement a cost-effective, electrically powered exoskeleton for the human hand that could improve grasping strength. A 3-D printed thermoplastic exoskeleton that allowed independent and enhanced movement of the index, middle and ring fingers was constructed...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226502/an-ensemble-based-regression-approach-for-continuous-estimation-of-wrist-and-fingers-movements-from-surface-electromyography
#20
Rami Alazrai, Ala Khalifeh, Nasim Alnuman, Deena Alabed, Yaser Mowafi, Rami Alazrai, Ala Khalifeh, Nasim Alnuman, Deena Alabed, Yaser Mowafi, Nasim Alnuman, Rami Alazrai, Ala Khalifeh, Yaser Mowafi, Deena Alabed
Late development and evolution of high degree-of-freedom (DOF) robotic hands have seen great technological strides to enhance the quality of life for amputated people. A robust hand kinematic estimation mechanisms have shown promising results to control robotic hands that can mimic the human hand functions and perform daily life hand dexterous tasks. In this paper, we propose an ensemble-based regression approach for continuous estimation of wrist and fingers movements from surface Electromyography (sEMG) signals...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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