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Journal of Neurophysiology
Physiologically Based Controller for Generating Overground Locomotion Using Functional Electrical Stimulation2007 •
The physiological control of stepping is governed both by signals descending from supraspinal systems and by circuitry residing within the lumbosacral spinal cord. The goal of this study was to evaluate the capacity of physiologically based controllers to restore functional overground locomotion after neurological damage, such as spinal cord injury when used in conjunction with functional electrical stimulation. For this purpose we implemented and tested two controllers: 1) an intrinsically timed system that generated a predetermined rhythmic output and 2) a sensory-based system that used feedback signals to make appropriate transitions between the unloaded (flexion) and loaded (extension) phases of the gait cycle. A third controller, a combination of the intrinsically timed and sensory-driven controllers, was implemented and two sessions were conducted to demonstrate the functional advantages of this approach. The controllers were tested in anesthetized cats, implanted with intramu...
Nature Protocols
Configuration of electrical spinal cord stimulation through real-time processing of gait kinematics2018 •
2017 •
This chapter surveys the different control methods developed for spinal cord stimulation to restore walking after neural injury or disease. We start by exploring the networks within the spinal cord that control or modulate walking. Next we introduce the different modes of stimulating the spinal cord: intraspinal microstimulation, epidural spinal cord stimulation, and magnetic spinal cord stimulation. Finally, we delve into the control strategies developed for these spinal cord stimulation methods to generate walking. Many of the control methods were inspired by the locomotor central pattern generator. Others took a more traditional control engineering approach by implementing non-linear control methods such fuzzy logic and sliding mode control. The ultimate goal is to achieve effortless and natural walking that is adaptable and personalized to the user. Although this goal is a few years away from being realized, the integration of engineering, neuroscience, and rehabilitation is certainly the right approach.
2015 •
Brain-computer interface controlled robotic gait orthosis
Neuromodulation: Technology at the Neural Interface
Functional Electrical Stimulation Control of Standing and Stepping After Spinal Cord Injury: A Review of Technical Characteristics2009 •
Functional neurology
Functional electrical stimulation controlled by artificial neural networks: pilot experiments with simple movements are promising for rehabilitation applicationsThis study falls within the ambit of research on functional electrical stimulation for the design of rehabilitation training for spinal cord injured patients. In this context, a crucial issue is the control of the stimulation parameters in order to optimize the patterns of muscle activation and to increase the duration of the exercises. An adaptive control system (NEURADAPT) based on artificial neural networks (ANNs) was developed to control the knee joint in accordance with desired trajectories by stimulating quadriceps muscles. This strategy includes an inverse neural model of the stimulated limb in the feedforward line and a neural network trained on-line in the feedback loop. NEURADAPT was compared with a linear closed-loop proportional integrative derivative (PID) controller and with a model-based neural controller (NEUROPID). Experiments on two subjects (one healthy and one paraplegic) show the good performance of NEURADAPT, which is able to reduce the time lag introduced by t...
Scientific Reports
Non-invasive, Brain-controlled Functional Electrical Stimulation for Locomotion Rehabilitation in Individuals with Paraplegia2019 •
Proceedings of the IEEE
Engineering Neural Interfaces for Rehabilitation of Lower Limb Function in Spinal Cord Injured2000 •
A spinal cord injury interrupts the communication between the brain and the region of the spinal cord that produces walking, leading to paralysis1,2. Here, we restored this communication with a digital bridge between the brain and spinal cord that enabled an individual with chronic tetraplegia to stand and walk naturally in community settings. This brain–spine interface (BSI) consists of fully implanted recording and stimulation systems that establish a direct link between cortical signals3 and the analogue modulation of epidural electrical stimulation targeting the spinal cord regions involved in the production of walking4–6. A highly reliable BSI is calibrated within a few minutes. This reliability has remained stable over one year, including during independent use at home. The participant reports that the BSI enables natural control over the movements of his legs to stand, walk, climb stairs and even traverse complex terrains. Moreover, neurorehabilitation supported by the BSI im...
The Journal of Speculative Philosophy
The End of Enlightenment Liberalism?2023 •
2024 •
International Journal of Engineering and Applied Sciences (IJEAS)
Extraction Of Non-Ferrous And Noble Metals From Mill Tailing By Solutions In The Presence Of Oxidizing AgentsMigration Histories of the Medieval Afroeurasian Transition Zone
Migration Histories of the Medieval Afroeurasian Transition Zone2020 •
Journal of Physics: Conference Series
A General Method For The Diagnosis Of Wind Turbine Systematic Yaw Error Based Solely On SCADA Data2024 •
2023 •
Dicionario de Saneamento Basico (Projeto SanBas/UFMG)
Privatização dos Serviços Públicos de Saneamento Básico no Brasil e a Onda Neoliberal Radicalizada2022 •
Journal of Organometallic Chemistry
Functionalized styryl iridium(III) complexes as active second-order NLO chromophores and building blocks for SHG polymeric films2014 •
Research Ideas and Outcomes
The Biodiversity Informatics Landscape: Elements, Connections and Opportunities2017 •
2023 •
einstein (São Paulo)
Multidisciplinary approach in head and neck cancer2024 •
International Journal of Medical Research and Review
Common stress factors faced by elderly in Deoli area of Wardha district2016 •
International Economic Review
On the Output Effects of Barriers to Trade2006 •
arXiv (Cornell University)
Hedonic Games With Friends, Enemies, and Neutrals: Resolving Open Questions and Fine-Grained Complexity2022 •
Natural Areas Journal
Canada Thistle Biological Control Agents on Two South Dakota Wildlife Refuges2006 •
Journal of Education Technology
Bagaimana Melakukan Penilaian Proses Pada Pembelajaran Berbasis Inkuiri?2017 •