Publications de Jérôme Gandar

Wireless closed-loop optogenetics across the entire dorsoventral spinal cord in mice

Stéphanie Lacour, Grégoire Courtine, Quentin Barraud, Léonie Asboth, Ileana Ozana Jelescu, Ivan Furfaro, Kyungjin Kim, Jérôme Gandar, Frédéric Pierre Gérald Michoud, Claudia Kathe

Optoelectronic systems can exert precise control over targeted neurons and pathways throughout the brain in untethered animals, but similar technologies for the spinal cord are not well established. In the present study, we describe a system for ultrafast, ...

NATURE PORTFOLIO2022

Neuroprosthetic baroreflex controls haemodynamics after spinal cord injury

Stéphanie Lacour, Grégoire Courtine, Jocelyne Bloch, Eduardo Martin Moraud, Quentin Barraud, Jordan Squair, Giuseppe Schiavone, Ileana Ozana Jelescu, Mark Andrew Anderson, Robin Jonathan Demesmaeker

Spinal cord injury (SCI) induces haemodynamic instability that threatens survival(1-3), impairs neurological recovery(4,5), increases the risk of cardiovascular disease(6,7), and reduces quality of life(8,9). Haemodynamic instability in this context is due ...

NATURE RESEARCH2021

Guidelines to Study and Develop Soft Electrode Systems for Neural Stimulation

Stéphanie Lacour, Grégoire Courtine, Giuseppe Schiavone, Florian Dylan Fallegger, Jérôme Gandar, Xiaoyang Kang

2020

Spatiotemporal stimulation strategies in neuroprostheses to improve locomotion after spinal cord injury

Jérôme Gandar

Spinal cord injury (SCI) disrupts communication within central nervous system and lead to range of neurological disorders including paralysis. Current rehabilitation strategies to restore locomotion are poorly effective in people with severe SCI. Epidural ...

EPFL2019

Advantages of soft subdural implants for the delivery of electrochemical neuromodulation therapies to the spinal cord

Stéphanie Lacour, Marco Capogrosso, Grégoire Courtine, Eduardo Martin Moraud, Pavel Musienko, Ivan Rusev Minev, Nikolaus Wenger, Jérôme Gandar, Polina Shkorbatova, Nathan Antoine Greiner

Objective. We recently developed soft neural interfaces enabling the delivery of electrical and chemical stimulation to the spinal cord. These stimulations restored locomotion in animal models of paralysis. Soft interfaces can be placed either below or abo ...

2018

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

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

Two-phase calibration of a neuroprosthetic system

Grégoire Courtine, Eduardo Martin Moraud, Tomislav Milekovic, Marco Capogrosso, Fabien Bertrand Paul Wagner, Jérôme Gandar

Methods and systems are provided for triggering electrical stimulation of a spinal cord during execution of a motor event. In one example, a method comprises monitoring motor cortex activity while execution of a desired motor movement is attempted during a ...

2018

Long-term usability and bio-integration of polyimide-based intraneural stimulating electrodes

Silvestro Micera, Grégoire Courtine, Nawal Noëlle Kinany, Quentin Barraud, Marco Capogrosso, Stanisa Raspopovic, Sophie Marie Marthe Wurth, Alessandra Piersigilli, Jacopo Rigosa, Jérôme Gandar

Stimulation of peripheral nerves has transiently restored lost sensation and has the potential to alleviate motor deficits. However, incomplete characterization of the long-term usability and bio-integration of intra-neural implants has restricted their us ...

Elsevier Sci Ltd2017

A brain-spine interface alleviating gait deficits after spinal cord injury in primates

Silvestro Micera, Grégoire Courtine, Quentin Barraud, Jocelyne Bloch, Tomislav Milekovic, Eduardo Martin Moraud, Marco Capogrosso, Elodie Rey, Fabien Bertrand Paul Wagner, Jérôme Gandar

Spinal cord injury disrupts the communication between the brain and the spinal circuits that orchestrate movement. To bypass the lesion, brain-computer interfaces(1-3) have directly linked cortical activity to electrical stimulation of muscles, and have th ...

Nature Publishing Group2016

Spatiotemporal neuromodulation therapies engaging muscle synergies improve motor control after spinal cord injury

Silvestro Micera, Stéphanie Lacour, Grégoire Courtine, Quentin Barraud, Jocelyne Bloch, Marco Capogrosso, Eduardo Martin Moraud, Pavel Musienko, Nikolaus Wenger, Natalia Pavlova

Electrical neuromodulation of lumbar segments improves motor control after spinal cord injury in animal models and humans. However, the physiological principles underlying the effect of this intervention remain poorly understood, which has limited the ther ...

Nature Publishing Group2016