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Journal of Neuroengineering and Rehabilitation

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https://www.readbyqxmd.com/read/28532512/inter-rater-reliability-of-kinesthetic-measurements-with-the-kinarm-robotic-exoskeleton
#1
Jennifer A Semrau, Troy M Herter, Stephen H Scott, Sean P Dukelow
BACKGROUND: Kinesthesia (sense of limb movement) has been extremely difficult to measure objectively, especially in individuals who have survived a stroke. The development of valid and reliable measurements for proprioception is important to developing a better understanding of proprioceptive impairments after stroke and their impact on the ability to perform daily activities. We recently developed a robotic task to evaluate kinesthetic deficits after stroke and found that the majority (~60%) of stroke survivors exhibit significant deficits in kinesthesia within the first 10 days post-stroke...
May 22, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28532464/neurorehabilitation-in-upper-limb-amputation-understanding-how-neurophysiological-changes-can-affect-functional-rehabilitation
#2
REVIEW
Lewis A Wheaton
BACKGROUND: Significant advances have been made in developing new prosthetic technologies with the goal of restoring function to persons that suffer partial or complete loss of the upper limb. Despite these technological advances, many challenges remain in understanding barriers in patient adoption of technology, and what critical factors should be of focus in prosthetics development from a motor control perspective. This points to a potential opportunity to improve our understanding of amputation using neurophysiology and plasticity, and integrate this knowledge into the development of prosthetics technology in novel ways...
May 22, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28532417/instrumented-balance-and-walking-assessments-in-persons-with-multiple-sclerosis-show-strong-test-retest-reliability
#3
Jordan J Craig, Adam P Bruetsch, Sharon G Lynch, Fay B Horak, Jessie M Huisinga
BACKGROUND: There is a need for objective movement assessment for clinical research trials aimed at improving gait and balance in persons with multiple sclerosis (PwMS). Wireless inertial sensors can accurately measure numerous walking and balance parameters but these measures require evaluation of reliability in PwMS. The current study determined the test-retest reliability of wireless inertial sensor measures obtained during an instrumented standing balance test and an instrumented Timed Up and Go test in PwMS...
May 22, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28521803/physical-interface-dynamics-alter-how-robotic-exosuits-augment-human-movement-implications-for-optimizing-wearable-assistive-devices
#4
Matthew B Yandell, Brendan T Quinlivan, Dmitry Popov, Conor Walsh, Karl E Zelik
BACKGROUND: Wearable assistive devices have demonstrated the potential to improve mobility outcomes for individuals with disabilities, and to augment healthy human performance; however, these benefits depend on how effectively power is transmitted from the device to the human user. Quantifying and understanding this power transmission is challenging due to complex human-device interface dynamics that occur as biological tissues and physical interface materials deform and displace under load, absorbing and returning power...
May 18, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28472991/resolving-the-effect-of-wrist-position-on-myoelectric-pattern-recognition-control
#5
Adenike A Adewuyi, Levi J Hargrove, Todd A Kuiken
BACKGROUND: The use of pattern recognition-based methods to control myoelectric upper-limb prostheses has been well studied in individuals with high-level amputations but few studies have demonstrated that it is suitable for partial-hand amputees, who often possess a functional wrist. This study's objective was to evaluate strategies that allow partial-hand amputees to control a prosthetic hand while allowing retain wrist function. METHODS: EMG data was recorded from the extrinsic and intrinsic hand muscles of six non-amputees and two partial-hand amputees while they performed 4 hand motions in 13 different wrist positions...
May 4, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28464927/design-and-test-of-an-automated-version-of-the-modified-jebsen-test-of-hand-function-using-microsoft-kinect
#6
Daniel Simonsen, Ida F Nielsen, Erika G Spaich, Ole K Andersen
BACKGROUND: The present paper describes the design and evaluation of an automated version of the Modified Jebsen Test of Hand Function (MJT) based on the Microsoft Kinect sensor. METHODS: The MJT was administered twice to 11 chronic stroke subjects with varying degrees of hand function deficits. The test times of the MJT were evaluated manually by a therapist using a stopwatch, and automatically using the Microsoft Kinect sensor. The ground truth times were assessed based on inspection of the video-recordings...
May 2, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28464891/supplemental-vibrotactile-feedback-control-of-stabilization-and-reaching-actions-of-the-arm-using-limb-state-and-position-error-encodings
#7
Alexis R Krueger, Psiche Giannoni, Valay Shah, Maura Casadio, Robert A Scheidt
BACKGROUND: Deficits of kinesthesia (limb position and movement sensation) commonly limit sensorimotor function and its recovery after neuromotor injury. Sensory substitution technologies providing synthetic kinesthetic feedback might re-establish or enhance closed-loop control of goal-directed behaviors in people with impaired kinesthesia. METHODS: As a first step toward this goal, we evaluated the ability of unimpaired people to use vibrotactile sensory substitution to enhance stabilization and reaching tasks...
May 2, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28464831/principal-component-analysis-for-ataxic-gait-using-a-triaxial-accelerometer
#8
Akira Matsushima, Kunihiro Yoshida, Hirokazu Genno, Shu-Ichi Ikeda
BACKGROUND: It is quite difficult to evaluate ataxic gait quantitatively in clinical practice. The aim of this study was to analyze the characteristics of ataxic gait using a triaxial accelerometer and to develop a novel biomarker of integrated gate parameters for ataxic gait. METHODS: Sixty-one patients with spinocerebellar ataxia (SCA) or multiple system atrophy with predominant cerebellar ataxia (MSA-C) and 57 healthy control subjects were enrolled. The subjects were instructed to walk 10 m for a total of 12 times on a flat floor at their usual walking speed with a triaxial accelerometer attached to their back...
May 2, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28449684/reducing-the-metabolic-cost-of-walking-with-an-ankle-exoskeleton-interaction-between-actuation-timing-and-power
#9
Samuel Galle, Philippe Malcolm, Steven Hartley Collins, Dirk De Clercq
BACKGROUND: Powered ankle-foot exoskeletons can reduce the metabolic cost of human walking to below normal levels, but optimal assistance properties remain unclear. The purpose of this study was to test the effects of different assistance timing and power characteristics in an experiment with a tethered ankle-foot exoskeleton. METHODS: Ten healthy female subjects walked on a treadmill with bilateral ankle-foot exoskeletons in 10 different assistance conditions. Artificial pneumatic muscles assisted plantarflexion during ankle push-off using one of four actuation onset timings (36, 42, 48 and 54% of the stride) and three power levels (average positive exoskeleton power over a stride, summed for both legs, of 0...
April 27, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28446181/a-neuromuscular-electrical-stimulation-nmes-and-robot-hybrid-system-for-multi-joint-coordinated-upper-limb-rehabilitation-after-stroke
#10
Wei Rong, Waiming Li, Mankit Pang, Junyan Hu, Xijun Wei, Bibo Yang, Honwah Wai, Xiaoxiang Zheng, Xiaoling Hu
BACKGROUND: It is a challenge to reduce the muscular discoordination in the paretic upper limb after stroke in the traditional rehabilitation programs. METHOD: In this study, a neuromuscular electrical stimulation (NMES) and robot hybrid system was developed for multi-joint coordinated upper limb physical training. The system could assist the elbow, wrist and fingers to conduct arm reaching out, hand opening/grasping and arm withdrawing by tracking an indicative moving cursor on the screen of a computer, with the support from the joint motors and electrical stimulations on target muscles, under the voluntary intention control by electromyography (EMG)...
April 26, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28438166/adjacent-regenerative-peripheral-nerve-interfaces-produce-phase-antagonist-signals-during-voluntary-walking-in-rats
#11
Daniel Ursu, Andrej Nedic, Melanie Urbanchek, Paul Cederna, R Brent Gillespie
BACKGROUND: Regenerative Peripheral Nerve Interfaces (RPNIs) are neurotized muscle grafts intended to produce electromyographic signals suitable for motorized prosthesis control. Two RPNIs producing independent agonist/antagonist signals are required for each control axis; however, it is unknown whether signals from adjacent RPNIs are independent. The purpose of this work was to determine signaling characteristics from two adjacent RPNIs, the first neurotized by a foot dorsi-flexor nerve and the second neurotized by a foot plantar-flexor nerve in a rodent model...
April 24, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28427422/differences-in-muscle-activity-and-temporal-step-parameters-between-lokomat-guided-walking-and-treadmill-walking-in-post-stroke-hemiparetic-patients-and-healthy-walkers
#12
Klaske van Kammen, Anne M Boonstra, Lucas H V van der Woude, Heleen A Reinders-Messelink, Rob den Otter
BACKGROUND: The Lokomat is a robotic exoskeleton that can be used to train gait function in hemiparetic stroke. To purposefully employ the Lokomat for training, it is important to understand (1) how Lokomat guided walking affects muscle activity following stroke and how these effects differ between patients and healthy walkers, (2) how abnormalities in the muscle activity of patients are modulated through Lokomat guided gait, and (3) how temporal step characteristics of patients were modulated during Lokomat guided walking...
April 20, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28420382/effect-of-tdcs-stimulation-of-motor-cortex-and-cerebellum-on-eeg-classification-of-motor-imagery-and-sensorimotor-band-power
#13
Irma N Angulo-Sherman, Marisol Rodríguez-Ugarte, Nadia Sciacca, Eduardo Iáñez, José M Azorín
BACKGROUND: Transcranial direct current stimulation (tDCS) is a technique for brain modulation that has potential to be used in motor neurorehabilitation. Considering that the cerebellum and motor cortex exert influence on the motor network, their stimulation could enhance motor functions, such as motor imagery, and be utilized for brain-computer interfaces (BCIs) during motor neurorehabilitation. METHODS: A new tDCS montage that influences cerebellum and either right-hand or feet motor area is proposed and validated with a simulation of electric field...
April 19, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28412953/quantification-of-task-dependent-cortical-activation-evoked-by-robotic-continuous-wrist-joint-manipulation-in-chronic-hemiparetic-stroke
#14
Martijn P Vlaar, Teodoro Solis-Escalante, Julius P A Dewald, Erwin E H van Wegen, Alfred C Schouten, Gert Kwakkel, Frans C T van der Helm
BACKGROUND: Cortical damage after stroke can drastically impair sensory and motor function of the upper limb, affecting the execution of activities of daily living and quality of life. Motor impairment after stroke has been thoroughly studied, however sensory impairment and its relation to movement control has received less attention. Integrity of the somatosensory system is essential for feedback control of human movement, and compromised integrity due to stroke has been linked to sensory impairment...
April 17, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28410594/physical-human-robot-interaction-of-an-active-pelvis-orthosis-toward-ergonomic-assessment-of-wearable-robots
#15
Nicolò d'Elia, Federica Vanetti, Marco Cempini, Guido Pasquini, Andrea Parri, Marco Rabuffetti, Maurizio Ferrarin, Raffaele Molino Lova, Nicola Vitiello
BACKGROUND: In human-centered robotics, exoskeletons are becoming relevant for addressing needs in the healthcare and industrial domains. Owing to their close interaction with the user, the safety and ergonomics of these systems are critical design features that require systematic evaluation methodologies. Proper transfer of mechanical power requires optimal tuning of the kinematic coupling between the robotic and anatomical joint rotation axes. We present the methods and results of an experimental evaluation of the physical interaction with an active pelvis orthosis (APO)...
April 14, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28399877/overground-vs-treadmill-based-robotic-gait-training-to-improve-seated-balance-in-people-with-motor-complete-spinal-cord-injury-a-case-report
#16
Amanda E Chisholm, Raed A Alamro, Alison M M Williams, Tania Lam
BACKGROUND: Robotic overground gait training devices, such as the Ekso, require users to actively participate in triggering steps through weight-shifting movements. It remains unknown how much the trunk muscles are activated during these movements, and if it is possible to transfer training effects to seated balance control. This study was conducted to compare the activity of postural control muscles of the trunk during overground (Ekso) vs. treadmill-based (Lokomat) robotic gait training, and evaluate changes in seated balance control in people with high-thoracic motor-complete spinal cord injury (SCI)...
April 11, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28399873/influence-of-functional-task-oriented-mental-practice-on-the-gait-of-transtibial-amputees-a-randomized-clinical-trial
#17
Rodrigo Gontijo Cunha, Paulo José Guimarães Da-Silva, Clarissa Cardoso Dos Santos Couto Paz, Ana Carolina da Silva Ferreira, Carlos Julio Tierra-Criollo
BACKGROUND: Mental practice (MP) through motor imagery is a cognitive training strategy used to improve locomotor skills during rehabilitation programs. Recent works have used MP tasks to investigate the neurophysiology of human gait; however, its effect on functional performance has not been evaluated. In the present study, the influence of gait-oriented MP tasks on the rehabilitation process of gait in transtibial amputees was investigated by assessing the vertical (V), anterior-posterior (AP), and medio-lateral (ML) ground reaction forces (GRFs) and the time duration of the support phase of the prosthetic limb...
April 11, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28388939/auto-detection-and-segmentation-of-daily-living-activities-during-a-timed-up-and-go-task-in-people-with-parkinson-s-disease-using-multiple-inertial-sensors
#18
Hung Nguyen, Karina Lebel, Patrick Boissy, Sarah Bogard, Etienne Goubault, Christian Duval
BACKGROUND: Wearable sensors have the potential to provide clinicians with access to motor performance of people with movement disorder as they undergo intervention. However, sensor data often have to be manually classified and segmented before they can be processed into clinical metrics. This process can be time consuming. We recently proposed detection and segmentation algorithms based on peak detection using Inertial Measurement Units (IMUs) to automatically identify and isolate common activities during daily living such as standing up, walking, turning, and sitting down...
April 7, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28376829/preserved-gait-kinematics-during-controlled-body-unloading
#19
L Awai, M Franz, C S Easthope, H Vallery, A Curt, M Bolliger
BACKGROUND: Body weight supported locomotor training was shown to improve walking function in neurological patients and is often performed on a treadmill. However, walking on a treadmill does not mimic natural walking for several reasons: absent self-initiation, less active retraction of leg required and altered afferent input. The superiority of overground training has been suggested in humans and was shown in rats demonstrating greater plasticity especially in descending pathways compared to treadmill training...
April 4, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28330504/competitive-and-cooperative-arm-rehabilitation-games-played-by-a-patient-and-unimpaired-person-effects-on-motivation-and-exercise-intensity
#20
Maja Goršič, Imre Cikajlo, Domen Novak
BACKGROUND: People with chronic arm impairment should exercise intensely to regain their abilities, but frequently lack motivation, leading to poor rehabilitation outcome. One promising way to increase motivation is through interpersonal rehabilitation games, which allow patients to compete or cooperate together with other people. However, such games have mainly been evaluated with unimpaired subjects, and little is known about how they affect motivation and exercise intensity in people with chronic arm impairment...
March 23, 2017: Journal of Neuroengineering and Rehabilitation
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