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Journal of Neuroengineering and Rehabilitation

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https://www.readbyqxmd.com/read/30442158/transcranial-direct-current-stimulation-tdcs-for-upper-limb-rehabilitation-after-stroke-future-directions
#1
LETTER
Bernhard Elsner, Joachim Kugler, Jan Mehrholz
Transcranial Direct Current Stimulation (tDCS) is a potentially useful tool to improve upper limb rehabilitation outcomes after stroke, although its effects in this regard have shown to be limited so far. Additional increases in effectiveness of tDCS in upper limb rehabilitation after stroke may for example be achieved by (1) applying a more focal stimulation approach like high definition tDCS (HD-tDCS), (2) involving functional imaging techniques during stimulation to identify target areas more exactly, (3) applying tDCS during Electroencephalography (EEG) (EEG-tDCS), (4) focusing on an effective upper limb rehabilitation strategy as an effective base treatment after stroke...
November 15, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/30442154/machine-learning-algorithms-for-activity-recognition-in-ambulant-children-and-adolescents-with-cerebral-palsy
#2
Matthew Ahmadi, Margaret O'Neil, Maria Fragala-Pinkham, Nancy Lennon, Stewart Trost
BACKGROUND: Cerebral palsy (CP) is the most common physical disability among children (2.5 to 3.6 cases per 1000 live births). Inadequate physical activity (PA) is a major problem effecting the health and well-being of children with CP. Practical, yet accurate measures of PA are needed to evaluate the effectiveness of surgical and therapy-based interventions to increase PA. Accelerometer-based motion sensors have become the standard for objectively measuring PA in children and adolescents; however, current methods for estimating physical activity intensity in children with CP are associated with significant error and may dramatically underestimate HPA in children with more severe mobility limitations...
November 15, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/30428896/kinect-based-assessment-of-proximal-arm-non-use-after-a-stroke
#3
K K A Bakhti, I Laffont, M Muthalib, J Froger, D Mottet
BACKGROUND: After a stroke, during seated reaching with their paretic upper limb, many patients spontaneously replace the use of their arm by trunk compensation movements, even though they are able to use their arm when forced to do so. We previously quantified this proximal arm non-use (PANU) with a motion capture system (Zebris, CMS20s). The aim of this study was to validate a low-cost Microsoft Kinect-based system against the CMS20s reference system to diagnose PANU. METHODS: In 19 hemiparetic stroke individuals, the PANU score, reach length, trunk length, and proximal arm use (PAU) were measured during seated reaching simultaneously by the Kinect (v2) and the CMS20s over two testing sessions separated by two hours...
November 14, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/30419966/effect-of-high-frequency-alternating-current-transcutaneous-stimulation-over-muscle-strength-a-controlled-pilot-study
#4
Diego Serrano-Muñoz, Juan Avendaño-Coy, Cristina Simón-Martínez, Julian Taylor, Julio Gómez-Soriano
BACKGROUND: High-frequency alternating currents of greater than 1 kHz applied on peripheral nerves has been used in animal studies to produce a motor nerve block. It has been evidenced that frequencies higher than 5 kHz are necessary to produce a complete peripheral nerve block in primates, whose nerve thickness is more similar to humans. The aim of the study was to determine the effect on muscle strength after the application of a high-frequency stimulation at 5 and 10 kHz compared to sham stimulation in healthy volunteers...
November 12, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/30419945/overground-walking-patterns-after-chronic-incomplete-spinal-cord-injury-show-distinct-response-patterns-to-unloading
#5
Christopher Schmidt Easthope, Luca Renato Traini, Lea Awai, Martina Franz, Georg Rauter, Armin Curt, Marc Bolliger
BACKGROUND: Body weight support (BWS) is often provided to incomplete spinal cord injury (iSCI) patients during rehabilitation to enable gait training before full weight-bearing is recovered. Emerging robotic devices enable BWS during overground walking, increasing task-specificity of the locomotor training. However, in contrast to a treadmill setting, there is little information on how unloading is integrated into overground locomotion. We investigated the effect of a transparent multi-directional BWS system on overground walking patterns at different levels of unloading in individuals with chronic iSCI (CiSCI) compared to controls...
November 12, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/30409202/time-course-of-changes-in-motor-cognitive-exergame-performances-during-task-specific-training-in-patients-with-dementia-identification-and-predictors-of-early-training-response
#6
Christian Werner, Rebekka Rosner, Stefanie Wiloth, Nele Christin Lemke, Jürgen M Bauer, Klaus Hauer
BACKGROUND: Some studies have already suggested that exergame interventions can be effective to improve physical, cognitive, motor-cognitive, and psychological outcomes in patients with dementia (PwD). However, little is known about the training volume required to induce such positive effects and the inter-individual differences in training response among PwD. The aim of the study was to analyze the time course of changes in motor-cognitive exergame performances during a task-specific training program and to identify predictors of early training response in PwD...
November 8, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/30409168/amputee-perception-of-prosthetic-ankle-stiffness-during-locomotion
#7
Max K Shepherd, Alejandro F Azocar, Matthew J Major, Elliott J Rouse
BACKGROUND: Prosthetic feet are spring-like, and their stiffness critically affects the wearer's stability, comfort, and energetic cost of walking. Despite the importance of stiffness in ambulation, the prescription process often entails testing a limited number of prostheses, which may result in patients receiving a foot with suboptimal mechanics. To understand the resolution with which prostheses should be individually optimized, we sought to characterize below-knee prosthesis users' psychophysical sensitivity to prosthesis stiffness...
November 8, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/30409163/impact-of-antagonistic-muscle-co-contraction-on-in-vivo-knee-contact-forces
#8
Adam Trepczynski, Ines Kutzner, Verena Schwachmeyer, Markus O Heller, Tilman Pfitzner, Georg N Duda
BACKGROUND: The onset and progression of osteoarthritis, but also the wear and loosening of the components of an artificial joint, are commonly associated with mechanical overloading of the structures. Knowledge of the mechanical forces acting at the joints, together with an understanding of the key factors that can alter them, are critical to develop effective treatments for restoring joint function. While static anatomy is usually the clinical focus, less is known about the impact of dynamic factors, such as individual muscle recruitment, on joint contact forces...
November 8, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/30400992/assessment-of-upper-limb-use-in-children-with-typical-development-and-neurodevelopmental-disorders-by-inertial-sensors-a-systematic-review
#9
REVIEW
Irene Braito, Martina Maselli, Giuseppina Sgandurra, Emanuela Inguaggiato, Elena Beani, Francesca Cecchi, Giovanni Cioni, Roslyn Boyd
Understanding development of bimanual upper limb (UL) activities in both typical and atypical conditions in children is important for: i) tailoring rehabilitation programs, ii) monitoring progress, iii) determining outcomes and iv) evaluating effectiveness of treatment/rehabilitation. Recent technological advances, such as wearable sensors, offer possibilities to perform standard medical monitoring. Body-worn motion sensors, mainly accelerometers, have shown very promising results but, so far, these studies have mainly focused on adults...
November 6, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/30400918/speed-adaptive-control-of-functional-electrical-stimulation-for-dropfoot-correction
#10
Guangtao Chen, Le Ma, Rong Song, Le Li, Xiaoyun Wang, Kaiyu Tong
BACKGROUND: Functional electrical stimulation is an important therapy technique for dropfoot correction. In order to achieve natural control, the parameter setting of FES should be associated with the activation of the tibialis anterior. METHODS: This study recruited nine healthy subjects and investigated the relations of walking speed with the onset timing and duration of tibialis anterior activation. Linear models were built for the walking speed with respect to these two parameters...
November 6, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/30400917/assessment-of-a-markerless-motion-analysis-system-for-manual-wheelchair-application
#11
Jacob Rammer, Brooke Slavens, Joseph Krzak, Jack Winters, Susan Riedel, Gerald Harris
BACKGROUND: Wheelchair biomechanics research advances accessibility and clinical care for manual wheelchair users. Standardized outcome assessments are vital tools for tracking progress, but there is a strong need for more quantitative methods. A system offering kinematic, quantitative detection, with the ease of use of a standardized outcome assessment, would be optimal for repeated, longitudinal assessment of manual wheelchair users' therapeutic progress, but has yet to be offered. RESULTS: This work evaluates a markerless motion analysis system for manual wheelchair mobility in clinical, community, and home settings...
November 6, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/30400914/vision-based-assessment-of-parkinsonism-and-levodopa-induced-dyskinesia-with-pose-estimation
#12
Michael H Li, Tiago A Mestre, Susan H Fox, Babak Taati
BACKGROUND: Despite the effectiveness of levodopa for treatment of Parkinson's disease (PD), prolonged usage leads to development of motor complications, most notably levodopa-induced dyskinesia (LID). Persons with PD and their physicians must regularly modify treatment regimens and timing for optimal relief of symptoms. While standardized clinical rating scales exist for assessing the severity of PD symptoms, they must be administered by a trained medical professional and are inherently subjective...
November 6, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/30400911/manual-wheelchair-downhill-stability-an-analysis-of-factors-affecting-tip-probability
#13
Louise Thomas, Jaimie Borisoff, Carolyn J Sparrey
BACKGROUND: For people who use manual wheelchairs, tips and falls can result in serious injuries including bone fractures, concussions, and traumatic brain injury. We aimed to characterize how wheelchair configuration changes (including on-the-fly adjustments), user variables, and usage conditions affected dynamic tip probability while rolling down a slope and contacting a small block. METHODS: Rigid body dynamic models of a manual wheelchair and test dummy were created using multi-body software (Madymo, TASS International, Livonia, MI), and validated with 189 experiments...
November 6, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/30384845/precise-estimation-of-human-corticospinal-excitability-associated-with-the-levels-of-motor-imagery-related-eeg-desynchronization-extracted-by-a-locked-in-amplifier-algorithm
#14
Kensho Takahashi, Kenji Kato, Nobuaki Mizuguchi, Junichi Ushiba
BACKGROUND: Physical motor exercise aided by an electroencephalogram (EEG)-based brain-computer interface (BCI) is known to improve motor recovery in patients with stroke. In such a BCI paradigm, event-related desynchronization (ERD) in the alpha and beta bands extracted from EEG recorded over the primary sensorimotor area (SM1) is often used, since ERD has been suggested to be associated with an increase of corticospinal excitability. Recently, we demonstrated a novel online lock-in amplifier (LIA) algorithm to estimate the amplitude modulation of motor-related SM1 ERD...
November 1, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/30382860/walking-and-balance-outcomes-for-stroke-survivors-a-randomized-clinical-trial-comparing-body-weight-supported-treadmill-training-with-versus-without-challenging-mobility-skills
#15
Sarah A Graham, Elliot J Roth, David A Brown
BACKGROUND: Treadmill training, with or without body-weight support (BWSTT), typically involves high step count, faster walking speed, and higher heart-rate intensity than overground walking training. The addition of challenging mobility skill practice may offer increased opportunities to improve walking and balance skills. Here we compare walking and balance outcomes of chronic stroke survivors performing BWSTT with BWSTT including challenging mobility skills. METHODS: Single-blind randomized clinical trial comparing two BWSTT interventions performed in a rehabilitation research laboratory facility over 6 weeks...
November 1, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/30373619/exploiting-the-heightened-phase-synchrony-in-patients-with-neuromuscular-disease-for-the-establishment-of-efficient-motor-imagery-bcis
#16
Kostas Georgiadis, Nikos Laskaris, Spiros Nikolopoulos, Ioannis Kompatsiaris
BACKGROUND: Phase synchrony has extensively been studied for understanding neural coordination in health and disease. There are a few studies concerning the implications in the context of BCIs, but its potential for establishing a communication channel in patients suffering from neuromuscular disorders remains totally unexplored. We investigate, here, this possibility by estimating the time-resolved phase connectivity patterns induced during a motor imagery (MI) task and adopting a supervised learning scheme to recover the subject's intention from the streaming data...
October 29, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/30373606/identification-of-forearm-skin-zones-with-similar-muscle-activation-patterns-during-activities-of-daily-living
#17
Néstor J Jarque-Bou, Margarita Vergara, Joaquín L Sancho-Bru, Alba Roda-Sales, Verónica Gracia-Ibáñez
BACKGROUND: A deeper knowledge of the activity of the forearm muscles during activities of daily living (ADL) could help to better understand the role of those muscles and allow clinicians to treat motor dysfunctions more effectively and thus improve patients' ability to perform activities of daily living. METHODS: In this work, we recorded sEMG activity from 30 spots distributed over the skin of the whole forearm of six subjects during the performance of 21 representative simulated ADL from the Sollerman Hand Function Test...
October 29, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/30290806/dissociating-motor-learning-from-recovery-in-exoskeleton-training-post-stroke
#18
Nicolas Schweighofer, Chunji Wang, Denis Mottet, Isabelle Laffont, Karima Bakthi, David J Reinkensmeyer, Olivier Rémy-Néris
BACKGROUND: A large number of robotic or gravity-supporting devices have been developed for rehabilitation of upper extremity post-stroke. Because these devices continuously monitor performance data during training, they could potentially help to develop predictive models of the effects of motor training on recovery. However, during training with such devices, patients must become adept at using the new "tool" of the exoskeleton, including learning the new forces and visuomotor transformations associated with the device...
October 5, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/30290777/development-of-a-3d-networked-multi-user-virtual-reality-environment-for-home-therapy-after-stroke
#19
Kristen M Triandafilou, Daria Tsoupikova, Alexander J Barry, Kelly N Thielbar, Nikolay Stoykov, Derek G Kamper
BACKGROUND: Impairment of upper extremity function is a common outcome following stroke, to the detriment of lifestyle and employment opportunities. Yet, access to treatment may be limited due to geographical and transportation constraints, especially for those living in rural areas. While stroke rates are higher in these areas, stroke survivors in these regions of the country have substantially less access to clinical therapy. Home therapy could offer an important alternative to clinical treatment, but the inherent isolation and the monotony of self-directed training can greatly reduce compliance...
October 5, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/30286776/automated-functional-upper-limb-evaluation-of-patients-with-friedreich-ataxia-using-serious-games-rehabilitation-exercises
#20
Bruno Bonnechère, Bart Jansen, Inès Haack, Lubos Omelina, Véronique Feipel, Serge Van Sint Jan, Massimo Pandolfo
BACKGROUND: Friedreich ataxia (FRDA) is a disease with neurological and systemic involvement. Clinical assessment tools commonly used for FRDA become less effective in evaluating decay in patients with advanced FRDA, particularly when they are in a wheelchair. Further motor worsening mainly impairs upper limb function. In this study, we tested if serious games (SG) developed for rehabilitation can be used as an assessment tool for upper limb function even in patients with advanced FRDA...
October 4, 2018: Journal of Neuroengineering and Rehabilitation
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