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Silvestro Micera

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Publications associées (314)

Characterization of pulse amplitude and pulse rate modulation for a human vestibular implant during acute electrical stimulation

Maurizio Ranieri, Silvestro Micera, Thuy Anh Khoa Nguyen

Objective. The vestibular system provides essential information about balance and spatial orientation via the brain to other sensory and motor systems. Bilateral vestibular loss significantly reduces quality of life, but vestibular implants (VIs) have demo ...

Iop Publishing Ltd2016

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

Léonie Asboth, Jérôme Gandar, Stéphanie Lacour, Arthur Edouard Hirsch, Silvestro Micera, Grégoire Courtine, Nikolaus Wenger, Ivan Rusev Minev, Rubia van den Brand, Quentin Barraud, Simone Ellen Joze Duis, Eduardo Martin Moraud, Pavel Musienko, Marco Capogrosso, Natalia Pavlova, Julie Kreider, Laetitia Danielle Philippine Baud, Andrea Mortera, Jocelyne Bloch

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

Evaluation of the effects of the Arm Light Exoskeleton on movement execution and muscle activities: a pilot study on healthy subjects

Massimo Bergamasco, Elvira Pirondini, Silvestro Micera, Martina Coscia

Background: Exoskeletons for lower and upper extremities have been introduced in neurorehabilitation because they can guide the patient's limb following its anatomy, covering many degrees of freedom and most of its natural workspace, and allowing the contr ...

BioMed Central2016

Direction-Dependent Adaptation of Dynamic Gait Stability Following Waist-Pull Perturbations

Silvestro Micera

Balance recovery during an unexpected disturbance is a complex motor task, where part of the variability depends on the type of the perturbation itself. Despite of this, little is known to what extent adaptation mechanisms to repeated perturbations are dep ...

Ieee-Inst Electrical Electronics Engineers Inc2016

Engagement of the Rat Hindlimb Motor Cortex across Natural Locomotor Behaviors

Silvestro Micera, Grégoire Courtine, Janine Beauparlant, Lucia Florinda Friedli Wittler, Rubia van den Brand, Simone Ellen Joze Duis, Julie Kreider, Jacopo Rigosa

Contrary to cats and primates, cortical contribution to hindlimb locomotor movements is not critical in rats. However, the importance of the motor cortex to regain locomotion after neurological disorders in rats suggests that cortical engagement in hindlim ...

Soc Neuroscience2016

Rehabilitative Soft Exoskeleton for Rodents

Sophie Marie Marthe Wurth, Silvestro Micera, Jamie Paik, Grégoire Courtine, Joachim von Zitzewitz, Rubia van den Brand, Eduardo Martin Moraud, Laetitia Danielle Philippine Baud, Juan Manuel Florez Marin, Manan Kishore Shah

Robotic exoskeletons provide programmable, consistent and controllable active therapeutic assistance to patients with neurological disorders. Here we introduce a prototype and preliminary experimental evaluation of a rehabilitative gait exoskeleton that en ...

Institute of Electrical and Electronics Engineers2016

Intraneural stimulation elicits discrimination of textural features by artificial fingertip in intact and amputee humans

Fabrizio Vecchio, Silvestro Micera, Stanisa Raspopovic, Francesco Maria Petrini, Fiorenzo Artoni

Restoration of touch after hand amputation is a desirable feature of ideal prostheses. Here, we show that texture discrimination can be artificially provided in human subjects by implementing a neuromorphic real-time mechano-neuro-transduction (MNT), which ...

Elife Sciences Publications Ltd2016

System to deliver adaptive epidural and/or subdural electrical spinal cord stimulation to facilitate and restore locomotion after a neuromotor impairment

Silvestro Micera, Grégoire Courtine, Nikolaus Wenger, Marco Bonizzato, Eduardo Martin Moraud

The present invention provides a closed-loop system for real-time control of epidural and/or subdural electrical stimulation comprising: means for applying to a subject neuromodulation with adjustable stimulation parameters, said means being operatively co ...

2016

Reducing GABA(A)-mediated inhibition improves forelimb motor function after focal cortical stroke in mice

Silvestro Micera, Stefano Lai

A deeper understanding of post-stroke plasticity is critical to devise more effective pharmacological and rehabilitative treatments. The GABAergic system is one of the key modulators of neuronal plasticity, and plays an important role in the control of "cr ...

Nature Research2016

Staying In Touch

Silvestro Micera

Ieee-Inst Electrical Electronics Engineers Inc2016

Model-based variables for the kinematic assessment of upper-extremity impairments in post-stroke patients

Elvira Pirondini, Silvestro Micera

Background: Common scales for clinical evaluation of post-stroke upper-limb motor recovery are often complemented with kinematic parameters extracted from movement trajectories. However, there is no a general consensus on which parameters to use. Moreover, ...

BioMed Central2016

Neuroprosthetic technologies to augment the impact of neurorehabilitation after spinal cord injury

Silvestro Micera, Grégoire Courtine, Joachim von Zitzewitz, Rubia van den Brand, Eduardo Martin Moraud, Marco Capogrosso, Jean-Baptiste Mignardot, Nicolas Francis Fumeaux, Fabien Bertrand Paul Wagner, Jocelyne Bloch

Spinal cord injury leads to a range of disabilities, including limitations in locomotor activity, that seriously diminish the patients’ autonomy and quality of life. Electrochemical neuromodulation therapies, robot-assisted rehabilitation and willpower-bas ...

2015

Muscle synergies and spinal maps are sensitive to the asymmetry induced by a unilateral stroke

Silvestro Micera, Martina Coscia

Background: Previous studies have shown that a cerebrovascular accident disrupts the coordinated control of leg muscles during locomotion inducing asymmetric gait patterns. However, the ability of muscle synergies and spinal maps to reflect the redistribut ...

BioMed Central2015

Decoding bipedal locomotion from the rat sensorimotor cortex

Silvestro Micera, Grégoire Courtine, Lucia Florinda Friedli Wittler, Rubia van den Brand, Jacopo Rigosa

Objective. Decoding forelimb movements from the firing activity of cortical neurons has been interfaced with robotic and prosthetic systems to replace lost upper limb functions in humans. Despite the potential of this approach to improve locomotion and fac ...

Institute of Physics2015

Detecting Slipping-Like Perturbations by Using Adaptive Oscillators

Silvestro Micera

This study introduces a novel algorithm to detect unexpected slipping-like perturbations based on the comparison between actual leg joint angles and those predicted by a pool of adaptive oscillators. The approach grounds on the hypothesis that during postu ...

Springer2015

Biomaterials. Electronic dura mater for long-term multimodal neural interfaces

Tomislav Milekovic, Léonie Asboth, Jérôme Gandar, Nicolas Vachicouras, Stéphanie Lacour, Arthur Edouard Hirsch, Silvestro Micera, Grégoire Courtine, Nikolaus Wenger, Ivan Rusev Minev, Quentin Barraud, Simone Ellen Joze Duis, Eduardo Martin Moraud, Pavel Musienko, Marco Capogrosso, Natalia Pavlova

The mechanical mismatch between soft neural tissues and stiff neural implants hinders the long-term performance of implantable neuroprostheses. Here, we designed and fabricated soft neural implants with the shape and elasticity of dura mater, the protectiv ...

American Association for the Advancement of Science2015

Chronic multichannel neural recordings from soft regenerative microchannel electrodes during gait

Sophie Marie Marthe Wurth, Shreya Narasimhan, Stéphanie Lacour, Katherine Marie Musick, Silvestro Micera, Marco Capogrosso, Jacopo Rigosa

Reliably interfacing a nerve with an electrode array is one of the approaches to restore motor and sensory functions after an injury to the peripheral nerve. Accomplishing this with current technologies is challenging as the electrode-neuron interface ofte ...

Nature Publishing Group2015

A three-dimensional self-opening intraneural peripheral interface (SELINE)

Silvestro Micera

Objective. In this study we present the development and testing in a rat model of the self-opening neural interface (SELINE), a novel flexible peripheral neural interface. Approach. This polyimide-based electrode has a three-dimensional structure that prov ...

Iop Publishing Ltd2015

EMG-based learning approach for estimating wrist motion

Aude Billard, Sahar El Khoury, Silvestro Micera, Iason Batzianoulis

This paper proposes an EMG based learning approach for estimating the displacement along the 2-axes (abduction/adduction and flexion/extension) of the human wrist in real-time. The algorithm extracts features from the EMG electrodes on the upper and forear ...

2015

Robot-assisted gait training improves motor performances and modifies Motor Unit firing in post-stroke patients

Silvestro Micera

Background. Robotics and related technologies are realizing their promise to improve the delivery of rehabilitation therapy but the mechanism by which they enhance recovery is still unknown. The electromechanical-driven gait orthosis Lokomat has demonstrat ...

Edizioni Minerva Medica2015

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