Publications associées à Membre inférieur (anatomie humaine)

Vertical and Leg Stiffness Modeling During Running: Effect of Speed and Incline

Kamiar Aminian, Frédéric Meyer, Mathieu Pascal Falbriard, Grégoire Millet

A spring mass model is often used to describe human running, allowing to understand the concept of elastic energy storage and restitution. The stiffness of the spring is a key parameter and different methods have been developed to estimate both the vertica ...

GEORG THIEME VERLAG KG2023

Electrical spinal cord stimulation protocols to regulate motor and autonomic functions in people with neurological disorders

Robin Jonathan Demesmaeker

Neurological disorders such as spinal cord injury (SCI) massively reduce independence and quality of life. Most often, the majority of the nervous system is still fully or partially spared, but dysfunctional due to aberrant or absent descending input from ...

EPFL2021

Closed-Loop Position Control of a Self-Sensing 3-DoF Origami Module With Pneumatic Actuators

Jamie Paik, Mustafa Mete

This letter presents closed-loop position control of a pneumatically actuated modular robotic platform "pneumagami" that can be stacked to enlarge work and design space for wearable applications. The module is a 3 degrees of freedom (DoF) parallel robot wi ...

2021

Corticolumbar dynamics during recovery after spinal cord injury

Selin Anil

In humans, a severe spinal cord contusion interrupts the vast majority of supraspinal projections to the spinal cord below the lesion. Permanent paralysis results from the chronic failure of these spared projections to engage lumbar circuits producing leg ...

EPFL2020

Detection of movement onset using EMG signals for upper-limb exoskeletons in reaching tasks

Silvestro Micera

BackgroundTo assist people with disabilities, exoskeletons must be provided with human-robot interfaces and smart algorithms capable to identify the user's movement intentions. Surface electromyographic (sEMG) signals could be suitable for this purpose, bu ...

BioMed Central2019

Configuration of electrical spinal cord stimulation through real-time processing of gait kinematics

Grégoire Courtine, Marco Capogrosso, Jocelyne Bloch, Eduardo Martin Moraud, Tomislav Milekovic, Pavel Musienko, Nikolaus Wenger, Fabien Bertrand Paul Wagner, Jérôme Gandar, Polina Shkorbatova, Natalia Pavlova

Epidural electrical stimulation (EES) of the spinal cord and real-time processing of gait kinematics are powerful methods for the study of locomotion and the improvement of motor control after injury or in neurological disorders. Here, we describe equipmen ...

2018

A Computational Approach for the Design of Epidural Electrical Spinal Cord Stimulation Strategies to Enable Locomotion after Spinal Cord Injury

Emanuele Formento

Spinal cord injury (SCI) is a major cause of paralysis with currently no effective treatment. Epidural electrical stimulation (EES) of the lumbar spinal cord has been shown to restore locomotion in animal models of SCI, but has not yet reached the same lev ...

EPFL2018

Hybrid peripheral-spinal neuroprosthesis for refined motor execution after paralysis

Sophie Marie Marthe Wurth

Spinal cord injury (SCI) disrupts the communication between the brain and the spinal circuits responsible for movement, thereby causing severe motor deficits. Current strategies to restore function to paralyzed limbs have separately investigated electrical ...

EPFL2018

Anatomical and functional properties of the foot and leg representation in areas 3b, 1 and 2 of primary somatosensory cortex in humans: A 7T fMRI study

Olaf Blanke, Wietske Van der Zwaag, Andrea Serino, Roger Gassert, Roberto Martuzzi, Michel Akselrod

Primary somatosensory cortex (S1) processes somatosensory information and is composed of multiple subregions. In particular, tactile information from the skin is encoded in three subregions, namely Brodmann areas (BAs) 3b, 1 and 2, with each area represent ...

2017

Neuroprosthetic system to restore locomotion after neuromotor disorder

Nikolaus Wenger

Neuromodulation of spinal sensorimotor circuits improves motor control in animal models and humans with Spinal Cord Injury (SCI) and Parkinson disease. Stimulation parameters are tuned manually and remain constant during motor execution which is suboptimal ...

EPFL2014

Inter-limb coordination and energy cost in swimming

Kamiar Aminian, Farzin Dadashi, Grégoire Millet, Florent Crettenand

Objectives: This study investigated the relationship between inter-arm coordination and the energy cost of locomotion in front crawl and breaststroke and explored swimmers’ flexibility in adapting their motor organization away from their preferred movement ...

Elsevier2014

Oncilla robot: a light-weight bio-inspired quadruped robot for fast locomotion in rough terrain

Auke Ijspeert, Alexander Spröwitz, Mostafa Ajallooeian, Rico Möckel, Alexandre Tuleu

: On the hardware level, we are proposing and testing a bio-inspired quadruped robot design (Oncilla robot), based on light-weight, compliant, and three-segmented legs. Our choice of placing the compliance such that it is spanning two joints enforces a non ...

2011

Leg (AMAL) using bipedal robotics technology

Auke Ijspeert

The objective of the work presented here is to develop a low cost active above knee prosthetic device exploiting bipedal robotics technology which will work utilizing the available biological motor control circuit properly integrated with a Central Pattern ...

Elsevier2009

Thermodynamics of the Spin Luttinger Liquid in a Model Ladder Material

Bruce Normand, Pierre Bouillot, Daniel Biner

The phase diagram in temperature and magnetic field of the metal-organic, two-leg, spin-ladder compound (C5H12N)(2)CuBr4 is studied by measurements of the specific heat and the magnetocaloric effect. We demonstrate the presence of an extended spin Luttinge ...

2008

Kinematic and EMG Determinants in Quadrupedal Locomotion of a Non-Human Primate (Rhesus)

Grégoire Courtine

We hypothesized that the activation patterns of flexor and extensor muscles and the resulting kinematics of the forelimbs and hindlimbs during locomotion in the Rhesus would have unique characteristics relative to other quadrupedal mammals. Adaptations of ...

2005