Tag

Neuroprosthetics

All articles tagged with #neuroprosthetics

science1 hour ago•5 min saved

Bidirectional brain implant restores hand movement and touch in quadriplegia

A single paralysed patient with quadriplegia regained voluntary hand movement and partial touch using a bidirectional brain-computer interface: implanted brain microelectrodes plus skin-stimulation patches translated his intended movements into nerve stimulation, with sensors providing touch feedback. Over 35 weeks he showed substantial arm-strength gains (87% in one measure reported as 86%/62% in the study) and could perform tasks like feeding himself and wiping his mouth; the work, published in Nature Medicine, marks a significant advance in neuroprosthetics but remains preliminary with one participant.

via Financial Times|

#brain-computer-interface #medical-science #neuroprosthetics

science28 days ago•7 min saved

Brain-Computer Implant Restores a Personal Voice for a Paralyzed Man

A man with advanced ALS and near-total paralysis can communicate again using an implanted brain–computer interface that translates neural activity into text and a digital voice. In the BrainGate 2 trial, Casey Harrell has used the system at home for about two years, producing more than 183,000 sentences and nearly 2 million words at roughly 56 words per minute with ~92% accuracy, enabling independent emailing, web use, and work. Developed by UC Davis with Brown University and Mass General Brigham, the device includes privacy mode to mute thoughts, and researchers hope to refine it for broader use among 27 participants in total.

via ScienceAlert|

#als #brain-computer-interface #braingate

technology2 months ago•8 min saved

Printed artificial neurons connect with living brain tissue, signaling a new era in brain-inspired hardware

Northwestern University researchers have printed flexible artificial neurons using MoS2 memristive nanosheets on a polymer substrate that generate neuron-like spikes and can directly activate living brain cells in mouse brain slices, marking a step toward brain–machine interfaces and energy-efficient AI hardware. The low-cost aerosol-jet process creates complex firing patterns, and the work, published in Nature Nanotechnology, suggests future devices could perform advanced tasks with far less power than today’s silicon systems.

via ScienceDaily|

#brain-computer-interfaces #energy-efficient-ai #mos2-memristive

neuroscience2 years ago•6 min saved

"Light-Controlled Muscles Offer Superior Fatigue Resistance"

MIT researchers have developed an optogenetic technique to control muscles using light, offering more precise control and significantly reducing fatigue in mice compared to traditional electrical stimulation. This approach, while not yet feasible in humans, could revolutionize prosthetics and aid individuals with impaired limb function. The team is working on safely delivering light-sensitive proteins to human tissue to make this method clinically viable.

via Neuroscience News|

#fatigue-resistance #mit-research #muscle-control

science-and-technology2 years ago•4 min saved

MIT Researchers Develop Light-Controlled Muscle Technology

MIT researchers have developed an optogenetic technique to control muscle contractions using light, offering more precise control and reduced fatigue compared to traditional electrical stimulation. This method, tested in mice, could potentially benefit people with paralysis, amputations, and other limb impairments, though challenges remain in safely delivering light-sensitive proteins to human tissue.

via MIT News|

#mit #muscle-control #neuroprosthetics

neuroscience2 years ago•4 min saved

Mapping Movement: Unveiling the Complexity of Brain-Sensory Partnership

A new study delves into the mechanisms of proprioception, the body's ability to sense limb position and movement, using musculoskeletal simulations and neural network models to understand how the brain integrates sensory data from muscle spindles. The research suggests that the brain prioritizes limb position and velocity in processing proprioceptive input, offering potential implications for neuroprosthetic design and advancing our understanding of sensory processing.

via Neuroscience News|

#brain-mapping #musculoskeletal-modeling #neural-network-models

science-and-technology2 years ago•0 min saved

"Bio-Inspired Neuroprosthetics: Enhancing Communication with the Brain"

Researchers at ETH Zurich have developed a groundbreaking approach to prosthetic technology that aims to improve connectivity with the nervous system, potentially revolutionizing the field and offering new hope for those with limb impairments.

via Interesting Engineering|

#brain-machine-interface #eth-zurich #limb-impairments

medical-science2 years ago•15 min saved

Closed-loop Spinal Cord Stimulation: Restoring Foot Sensory Feedback and Alleviating Phantom Limb Pain

Researchers have demonstrated the successful restoration of sensory feedback from the foot and reduction of phantom limb pain in individuals with lower-limb amputations through closed-loop spinal cord stimulation. By stimulating the spinal cord in response to pressure sensors on the sole of the foot, the study participants were able to perceive sensations in their missing limb and experience relief from phantom limb pain. This breakthrough could significantly improve the quality of life for amputees and pave the way for the development of more advanced neuroprosthetic devices.

via Nature.com|

#lower-limb-amputations #medical-science #neuroprosthetics

science-and-technology2 years ago•6 min saved

Revolutionary Rice-engineered Material Reconnects Severed Nerves

Researchers at Rice University have developed a magnetoelectric material that can stimulate neurons remotely and bridge the gap in a severed nerve. The material performs magnetic-to-electric conversion 120 times faster than similar materials, making it suitable for neurostimulation treatments. The material's properties could lead to less invasive procedures, as it can be injected at the desired site instead of requiring implantation. The research also provides a framework for advanced materials design that could drive innovation in various fields.

via Rice News|

#advanced-materials-design #magnetoelectric-material #nerve-regeneration

neuroscience3 years ago•3 min saved

Intelligent Neuroprosthetics Offer Hope for Motor Disease Patients.

Researchers at the University of Montreal have demonstrated the possibility of autonomously optimizing the stimulation parameters of prostheses implanted in the brains of animals, without human intervention, using autonomous learning algorithms. This advance may prove to be beneficial for those with spinal cord injury and diseases that affect movement, such as Parkinson's disease. The researchers combined expertise in neuroscience and artificial intelligence to develop the algorithmic framework capable of handling optimization in large parameter spaces.

via Neuroscience News|

#artificial-intelligence #motor-diseases #neuroprosthetics