Tag Archives: paralysis

Research team restores monkey’s hand function with artificial neural connection

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Japanese researchers restore hand function to monkey with artificial neural connection

Scientists working together from Japanese and American universities may have made a pretty large leap in restoring neural function for those with non-paralyzing spinal cord injuries. The researchers applied a "novel artificial neuron connection" over lesions in the spinal cord of a partially paralyzed monkey, partially restoring its arm / brain circuit and allowing greater hand control purely by brainpower. The team also created a reverse circuit where muscle activity from the arm stimulated the spinal cord, reinforcing the signals and "boosting ongoing activity in the muscle." There's no word on whether it would help those with full paralysis, though for lesser "paretic" damage, "this might even have a better chance of becoming a real prosthetic treatment rather than the sort of robotic devices that have been developed recently," according to the team. See the source and More Coverage links for more.

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Source: National Institute for Physiological Sciences

Ekso Bionics’ robotic suit eyes-on (video)

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Ekso Bionics' robotic suit eyeson video

Since last we saw the Ekso Bionics robotic suit, which helps folks with lower-extremity paralysis or weakness to stand up and walk, the $110,000 exoskeleton has been on the market for about a year. About 30 have sold so far, and the company's director of marketing and communications, Allison Sojka, reckons that medical centers have already helped rehabilitate somewhere between 500 and 1,000 patients. By allowing them to stand up and walk, the bionic suit not only helps users overcome issues like bone density loss and neuropathic pain related to their condition, but also to gain reams of confidence -- an oft-overlooked factor in the recovery process.

The production model is a polished-looking assemblage of aluminum and judiciously placed titanium and carbon fiber, along with sensors, motors, joints, off-the-shelf DSPs and custom circuitry and software. Two lithium-ion batteries power the device (four are included), each of which will go for three to six hours after charging for an hour or so, allowing continuous use of the suit by facilities. Three walk modes are available, namely FirstStep, which is actuated by a therapist with a button push; a user-controlled mode called ActiveStep; and ProStep, which senses user body cues for movement control. The suit also provides audio feedback to help users achieve ideal positioning and transmits stats and data for further review and reporting. Sojka said that the company will release new variable-assist software option in June that'll let patients contribute from zero to 100 percent of the walking power, with the exoskeleton providing the rest -- though there's no pricing yet for that update. To hear her describe how the suit works and see it in action with patient Sarah Anderson, check the video and gallery after the break.

Gallery: Ekso Bionics robotic suit hands-on

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Vibrating glove gives piano lessons, helps rehab patients regain finger sensation and motor skills

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Vibrating glove gives piano lessons, helps rehab patients regain finger sensation, motor skills

We've seen a good number of electronic gloves before, and now researchers at Georgia Tech have devised one to rehabilitate patients who suffer from paralyzing spinal cord injuries while teaching them how to tickle the ivories. Christened Mobile Music Touch, the black mitt pairs with a keyboard and cues individual fingers with vibrations to play notes. The handgear also buzzes constantly for several hours to stimulate recovery while users go about their day, similar to another yellowjacket-developed solution. After treatment, some patients could pick up objects and feel textures they hadn't been able to -- especially remarkable since, according to the university, little improvement is typically seen a year after injuries are sustained. Folks who learned to play the piano with the device also experienced better results than those who did without it. Project leader Dr. Tanya Markow believes that the rehab's success could be caused by renewed brain activity that sometimes lies dormant. For the full skinny, head past the break for the press release and a video of the gauntlet in action.

[Thanks, Timothy]

Continue reading Vibrating glove gives piano lessons, helps rehab patients regain finger sensation and motor skills

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Vibrating glove gives piano lessons, helps rehab patients regain finger sensation and motor skills originally appeared on Engadget on Wed, 18 Jul 2012 08:08:00 EDT. Please see our terms for use of feeds.

Permalink   |  sourceGeorgia Tech  | Email this | Comments

New system lets you type with your brain using MRIs

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New system lets you type with your brain using MRIs

This isn't mind reading, per say. Instead Bettina Sorger, Joel Reithler, Brigitte Dahmen and Rainer Goebel at Universiteit Maastricht have figured out a way to monitor the flow of blood in the brain and associate the images captured using an MRI with the letters of the alphabet. The whole system takes about an hour to learn and configure for each individual. Trials focused on healthy individuals, but clearly its the paralyzed and people suffering from diseases like ALS that have the most to gain. Sorger hopes to enable "locked-in" patients to finally be able to communicate with the outside world by thinking out letter at a time. Obviously, patients aren't going to be able to install an MRI in their homes, much less lug one around with them. The data collected could be used to finely tailor less accurate but more portable systems for patients that monitor electrical or light signals. If you're interested in the real nitty-gritty you can check out the complete research paper at the source link.

New system lets you type with your brain using MRIs originally appeared on Engadget on Fri, 29 Jun 2012 13:46:00 EDT. Please see our terms for use of feeds.

Permalink Gizmodo  |  sourceCurrent Biology, University of Maastricht  | Email this | Comments