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  1. No Access

    Chapter

    Digital Bridge to Restore Voluntary Control of Leg Movements After Paralysis

    Spinal cord injury disrupts the connection between the brain and the regions of the spinal cord located below the lesion. This disruption impairs or even suppresses voluntary control of muscles, leading to per...

    Andrea Galvez, Guillaume Charvet, Jocelyne Bloch in Brain-Computer Interface Research (2024)

  2. Article

    Open Access

    Walking naturally after spinal cord injury using a brain–spine interface

    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 bet...

    Henri Lorach, Andrea Galvez, Valeria Spagnolo, Felix Martel, Serpil Karakas in Nature (2023)

  3. No Access

    Article

    Activity-dependent spinal cord neuromodulation rapidly restores trunk and leg motor functions after complete paralysis

    Epidural electrical stimulation (EES) targeting the dorsal roots of lumbosacral segments restores walking in people with spinal cord injury (SCI). However, EES is delivered with multielectrode paddle leads tha...

    Andreas Rowald, Salif Komi, Robin Demesmaeker, Edeny Baaklini in Nature Medicine (2022)

  4. Article

    Open Access

    Recruitment of upper-limb motoneurons with epidural electrical stimulation of the cervical spinal cord

    Epidural electrical stimulation (EES) of lumbosacral sensorimotor circuits improves leg motor control in animals and humans with spinal cord injury (SCI). Upper-limb motor control involves similar circuits, lo...

    Nathan Greiner, Beatrice Barra, Giuseppe Schiavone, Henri Lorach in Nature Communications (2021)

  5. No Access

    Article

    Behavioural responses to a photovoltaic subretinal prosthesis implanted in non-human primates

    Retinal dystrophies and age-related macular degeneration related to photoreceptor degeneration can cause blindness. In blind patients, although the electrical activation of the residual retinal circuit can pro...

    Paul-Henri Prévot, Kevin Gehere, Fabrice Arcizet in Nature Biomedical Engineering (2020)

  6. Article

    Open Access

    Temporal structure in spiking patterns of ganglion cells defines perceptual thresholds in rodents with subretinal prosthesis

    Subretinal prostheses are designed to restore sight in patients blinded by retinal degeneration using electrical stimulation of the inner retinal neurons. To relate retinal output to perception, we studied beh...

    Elton Ho, Henri Lorach, Georges Goetz, Florian Laszlo, **n Lei in Scientific Reports (2018)

  7. No Access

    Chapter

    High Resolution Photovoltaic Subretinal Prosthesis for Restoration of Sight

    In photovoltaic subretinal prostheses, each pixel converts light into electric current to stimulate the nearby inner retinal neurons. Visual information is projected onto the implant by video goggles using pul...

    Henri Lorach, Daniel Palanker in Artificial Vision (2017)

  8. No Access

    Article

    Photovoltaic restoration of sight with high visual acuity

    A photovoltaic retinal prosthesis activated by light restores half of normal visual acuity in rats blinded by retinal degeneration.

    Henri Lorach, Georges Goetz, Richard Smith, **n Lei, Yossi Mandel in Nature Medicine (2015)

  9. No Access

    Chapter and Conference Paper

    Taurine Is a Crucial Factor to Preserve Retinal Ganglion Cell Survival

    Retinal ganglion cells (RGCs) are spiking neurons, which send visual information to the brain, through the optic nerve. RGC degeneration occurs in retinal diseases, either as a primary process or secondary to ...

    Nicolas Froger, Firas Jammoul, David Gaucher, Lucia Cadetti, Henri Lorach in Taurine 8 (2013)