Searched for: author:"van der Kooij, H."
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Fricke, Simone S. (author), Bayón, Cristina (author), van der Kooij, H. (author), Edwin, Edwin H. (author)
Background: In clinical practice, therapists choose the amount of assistance for robot-assisted training. This can result in outcomes that are influenced by subjective decisions and tuning of training parameters can be time-consuming. Therefore, various algorithms to automatically tune the assistance have been developed. However, the...
journal article 2020
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Schut, I.M. (author), Pasma, J.H. (author), Roelofs, J. M.B. (author), Weerdesteyn, V. (author), van der Kooij, H. (author), Schouten, A.C. (author)
Changes in human balance control can objectively be assessed using system identification techniques in combination with support surface translations. However, large, expensive and complex motion platforms are required, which are not suitable for the clinic. A treadmill could be a simple alternative to apply support surface translations. In...
journal article 2020
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Beckers, N.W.M. (author), van Asseldonk, Edwin H.F. (author), van der Kooij, H. (author)
Haptic interaction between two humans, for example, a physiotherapist assisting a patient regaining the ability to grasp a cup, likely facilitates motor skill acquisition. Haptic human–human interaction has been shown to enhance individual performance improvement in a tracking task with a visuomotor rotation perturbation. These results are...
journal article 2020
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Fricke, Simone S. (author), Smits, Hilde J.G. (author), Bayón, Cristina (author), Buurke, Jaap H. (author), van der Kooij, H. (author), van Asseldonk, Edwin H.F. (author)
Background: Recently developed controllers for robot-assisted gait training allow for the adjustment of assistance for specific subtasks (i.e. specific joints and intervals of the gait cycle that are related to common impairments after stroke). However, not much is known about possible interactions between subtasks and a better understanding...
journal article 2020
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Wu, Amy R. (author), Simpson, Cole S. (author), van Asseldonk, Edwin H.F. (author), van der Kooij, H. (author), Ijspeert, Auke J. (author)
Human walking speeds can be influenced by multiple factors, from energetic considerations to the time to reach a destination. Neurological deficits or lower-limb injuries can lead to slower walking speeds, and the recovery of able-bodied gait speed and behavior from impaired gait is considered an important rehabilitation goal. Because gait...
journal article 2019
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Yang, Han Ping (author), Jang, Chau Shin (author), van der Kooij, H. (author)
An electromagnetic spring-based variable stiffness actuator is a new concept with the potential to change stiffness faster than mechanical springs can; however, its nonlinear elastic property is a challenge in actuator design. In this paper, the torque response of a custom-made electromagnetic spring was studied using a ramping force test and...
conference paper 2019
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Kuck, Alexander (author), Stegeman, Dick F. (author), van der Kooij, H. (author), Van Asseldonk, Edwin H.F. (author)
Trans-spinal direct current stimulation (tsDCS) is an electro-modulatory tool with possible application in the rehabilitation of spinal cord injury. TsDCS generates a small electric field, aiming to induce lasting, functional neuromodulation in the targeted neuronal networks. Earlier studies have shown significant modulatory effects after...
journal article 2018
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van 't Veld, R.C. (author), Schouten, A.C. (author), van der Kooij, H. (author), Van Asseldonk, Edwin H.F. (author)
poster 2018
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van Kordelaar, J. (author), Pasma, J.H. (author), Cenciarini, Massimo (author), Schouten, A.C. (author), van der Kooij, H. (author), Maurer, Christoph (author)
The vestibular system is involved in gaze stabilization and standing balance control. However, it is unclear whether vestibular dysfunction affects both processes to a similar extent. Therefore, the objective of this study was to determine how the reliance on vestibular information during standing balance control is related to gaze...
journal article 2018
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Forbes, P.A. (author), Vlutters, M (author), Dakin, CJ (author), van der Kooij, H. (author), Blouin, JS (author), Schouten, A.C. (author)
During walking, the vestibular influence on locomotor activity is phase-dependent and modulated in both limbs with changes in velocity. It is unclear, however, whether this bilateral modulation is due to a coordinated mechanism between both limbs or instead through limb-specific processes that remain masked by the symmetric nature of locomotion....
journal article 2017
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Pasma, J.H. (author), van Kordelaar, J. (author), de Kam, D. (author), Weerdesteyn, V. (author), Schouten, A.C. (author), van der Kooij, H. (author)
Background: Closed loop system identification (CLSIT) is a method to disentangle the contribution of underlying systems in standing balance. We investigated whether taking into account lower leg muscle activation in CLSIT could improve the reliability and accuracy of estimated parameters identifying the underlying systems. Methods: Standing...
journal article 2017
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Wu, Amy R. (author), Dzeladini, Florin (author), Brug, Tycho J.H. (author), Tamburella, Federica (author), Tagliamonte, Nevio L. (author), Van Asseldonk, Edwin H.F. (author), van der Kooij, H. (author), Ijspeert, Auke J. (author)
Versatility is important for a wearable exoskeleton controller to be responsive to both the user and the environment. These characteristics are especially important for subjects with spinal cord injury (SCI), where active recruitment of their own neuromuscular system could promote motor recovery. Here we demonstrate the capability of a novel,...
journal article 2017
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Pasma, J.H. (author), Engelhart, D. (author), Maier, A.B. (author), Aarts, R.G.K.M. (author), Van Gerven, J.M.A. (author), Arendzen, J.H. (author), Schouten, A.C. (author), Meskers, C.G.M. (author), Van der Kooij, H. (author)
Objectives System identification techniques have the potential to assess the contribution of the underlying systems involved in standing balance by applying well-known disturbances. We investigated the reliability of standing balance parameters obtained with multivariate closed loop system identification techniques. Methods In twelve healthy...
journal article 2016
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Maggioni, S. (author), Melendez-Calderon, A. (author), van Asseldonk, E. (author), Klamroth-Marganska, V (author), Lünenburger, L. (author), Riener, R (author), van der Kooij, H. (author)
The assessment of sensorimotor functions is extremely important to understand the health status of a patient and its change over time. Assessments are necessary to plan and adjust the therapy in order to maximize the chances of individual recovery. Nowadays, however, assessments are seldom used in clinical practice due to administrative...
review 2016
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Vlutters, M (author), van Asseldonk, EHF (author), van der Kooij, H. (author)
In many simple walking models, foot placement dictates the center of pressure location and ground reaction force components, whereas humans can modulate these aspects after foot contact. Because of the differences, it is unclear to what extent predictions made by models are valid for human walking. Yet, both model simulations and human...
journal article 2016
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Boonstra, T.A. (author), Van Vugt, J.P.P. (author), Van der Kooij, H. (author), Bloem, B.R. (author)
Balance control (the ability to maintain an upright posture) is asymmetrically controlled in a proportion of patients with Parkinson’s disease. Gait asymmetries have been linked to the pathophysiology of freezing of gait. We speculate that asymmetries in balance could contribute to freezing by a) hampering the unloading of the stepping leg and...
journal article 2014
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Sylos-Labini, F. (author), La Scaleia, V. (author), d'Avella, A. (author), Pisotta, I. (author), Tamburella, F. (author), Scivoletto, G. (author), Molinari, M. (author), Wang, S. (author), Wang, L. (author), Van Asseldonk, E. (author), Van der Kooij, H. (author), Hoellinger, T. (author), Cheron, G. (author), Thorsteinsson, F. (author), Ilzkovitz, M. (author), Gancet, J. (author), Hauffe, R. (author), Zanov, F. (author), Lacquaniti, F. (author), Ivanenko, Y.P. (author)
Neuroprosthetic technology and robotic exoskeletons are being developed to facilitate stepping, reduce muscle efforts, and promote motor recovery. Nevertheless, the guidance forces of an exoskeleton may influence the sensory inputs, sensorimotor interactions and resulting muscle activity patterns during stepping. The aim of this study was to...
journal article 2014
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Fleerkotte, B.M. (author), Koopman, B. (author), Buurke, J.H. (author), Van Asseldonk, E.H.F. (author), Van der Kooij, H. (author), Rietman, J.S. (author)
Background There is increasing interest in the use of robotic gait-training devices in walking rehabilitation of incomplete spinal cord injured (iSCI) individuals. These devices provide promising opportunities to increase the intensity of training and reduce physical demands on therapists. Despite these potential benefits, robotic gait-training...
journal article 2014
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Westerveld, A.J. (author), Schouten, A.C. (author), Veltink, P.H. (author), Van der Kooij, H. (author)
Background Stroke survivors often have difficulties in manipulating objects with their affected hand. Thumb control plays an important role in object manipulation. Surface functional electrical stimulation (FES) can assist movement. We aim to control the 2D thumb force by predicting the sum of individual muscle forces, described by a sigmoidal...
journal article 2013
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Meuleman, J.H. (author), Van Asseldonk, E.H.F. (author), Van der Kooij, H. (author)
Background Gait training robots should display a minimum added inertia in order to allow normal walking. The effect of inertias in specific directions is yet unknown. We set up two experiments to assess the effect of inertia in anteroposterior (AP) direction to the ankle and AP and mediolateral (ML) direction to the pelvis. Methods We developed...
journal article 2013
Searched for: author:"van der Kooij, H."
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