Isometric force pillow: using air pressure to quantify involuntary finger flexion in the presence of hypertonia [PDF]
Isometric force pillow: using air pressure to quantify involuntary
finger flexion in the presence of hypertonia. In International Conference on
NeuroRehabilitation (pp. 835-840). 2020. Springer, Cham, 2020 Survivors of central nervous system injury commonly present with spastic hypertonia. The affected muscles are hyperexcitable and can display involuntary static muscle tone and an exaggerated stretch reflex. These symptoms affect posture and disrupt activities of daily living.
arxiv +1 more source
Interactive Modelling of Volumetric Musculoskeletal Anatomy [PDF]
ACM Trans. Graph., Vol. 40, No. 4, Article 122. Publication date:
August 2021, 2021 We present a new approach for modelling musculoskeletal anatomy. Unlike previous methods, we do not model individual muscle shapes as geometric primitives (polygonal meshes, NURBS etc.). Instead, we adopt a volumetric segmentation approach where every point in our volume is assigned to a muscle, fat, or bone tissue.
arxiv +1 more source
Center of mass perturbation as a normalizable estimate of dynamic balance in gait: an application comparing typically developing children with spastic cerebral palsy [PDF]
Phys. Rev. E 95, 062128 (2017), 2017 It is well recognized that the relative position of the center of mass (pCOM) with respect to the base of support (BOS) is a determining factor in the maintenance of balance. However, during gait the dynamic nature of the BOS is not well defined and in most studies is completely ignored.
arxiv +1 more source
Insomnia impairs muscle function via regulating protein degradation and muscle clock [PDF]
arXiv, 2023 Background: Insomnia makes people more physically unable of doing daily duties, which results in a lack of strength, leads to lacking in strength. However, the effects of insomnia on muscle function have not yet been thoroughly investigated. So, the objectives of this study were to clarify how insomnia contributes to the decrease of muscular function ...
arxiv
Neural self-organization for muscle-driven robots [PDF]
arXiv, 2023 We present self-organizing control principles for simulated robots actuated by synthetic muscles. Muscles correspond to linear motors exerting force only when contracting, but not when expanding, with joints being actuated by pairs of antagonistic muscles.
arxiv
Mechanical Design Improvement of a Passive Device to Assist Eating in People Living with Movement Disorders [PDF]
Rehabilitation Engineering Society of North America (now
Rehabilitation Engineering and Assistive Technology Society of North America
(RESNA), 2020, 2020 Many people living with neurological disorders, such as cerebral palsy, stroke, muscular dystrophy or dystonia experience upper limb impairments (muscle spasticity, loss of selective motor control, muscle weakness or tremors) and have difficulty to eat independently.
arxiv
The energy of muscle contraction. II. Transverse compression and work [PDF]
, 2020 In this study we reproduced this compression-induced reduction in muscle force through the use of a three-dimensional finite element model of contracting muscle. The model used the principle of minimum total energy and allowed for the redistribution of energy through different strain energy-densities; this allowed us to determine the importance of the ...
arxiv +1 more source
Agent-based Modeling and Simulation of Human Muscle For Development of Human Gait Analyzer Application [PDF]
arXiv, 2022 Despite the fact that only a small portion of muscles are affected in motion disease and disorders, medical therapies do not distinguish between healthy and unhealthy muscles. In this paper, a method is devised in order to calculate the neural stimuli of the lower body during gait cycle and check if any group of muscles are not acting properly.
arxiv
Towards an efficient inverse static model of a Festo actuator made of two antagonist muscles for hybrid control of its position and stiffness [PDF]
arXiv, 2021 The Festo air muscle is today one of the most known commercial version of the so-called McKibben pneumatic artificial muscle. A major advantage of handmade McKibben muscles, as well as its commercial versions, lies in the possibility it offers of realizing antagonist muscle actuator on the model of the biceps-triceps system.
arxiv
Precise Few-shot Fat-free Thigh Muscle Segmentation in T1-weighted MRI [PDF]
arXiv, 2023 Precise thigh muscle volumes are crucial to monitor the motor functionality of patients with diseases that may result in various degrees of thigh muscle loss. T1-weighted MRI is the default surrogate to obtain thigh muscle masks due to its contrast between muscle and fat signals.
arxiv