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New prosthetics restore natural movement via nerve connection

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New prosthetics restore natural movement via nerve connection

In the world of prosthetics, a groundbreaking advancement is changing the game for individuals with lower-limb amputations. 

Researchers at MIT, in collaboration with Brigham and Women’s Hospital, have developed a neuroprosthetic system that allows users to control their prosthetic legs using their own nervous systems. 

This innovative approach could bring us closer to a future of fully integrated, naturally controlled artificial limbs.

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A person wearing the neuroprosthetic system (Hugh Herr and Hyungeun Song)

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The AMI: A surgical game-changer

At the heart of this breakthrough is a surgical procedure known as the agonist-antagonist myoneural interface, or AMI. Unlike traditional amputation methods, the AMI reconnects muscles in the residual limb, preserving the natural push-pull dynamics of muscle pairs. This seemingly simple change has profound implications for prosthetic control and function.

Illustration of how the neuroprosthetic system works (MIT Media Lab)

Dr. Hugh Herr, a professor at MIT and senior author of the study, explained the significance: “This is the first prosthetic study in history that shows a leg prosthesis under full neural modulation, where a biomimetic gait emerges. No one has been able to show this level of brain control that produces a natural gait, where the human’s nervous system is controlling the movement, not a robotic control algorithm.”

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Dr. Hugh Herr pictured with the neuroprosthetic system (Jimmy Day, MIT Media Lab)

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The power of proprioception

The key advantage of the AMI system is its ability to provide users with proprioceptive feedback, the sense of where their limb is in space. This sensory information, often taken for granted by those with intact limbs, is crucial for natural movement and control. With the AMI, patients regain a portion of this vital feedback, allowing them to walk more naturally and confidently.

In the study, seven patients with AMI surgery were compared to seven with traditional amputations. The results were striking. AMI patients walked faster, navigated obstacles more easily and climbed stairs with greater agility. They also demonstrated more natural movements, such as pointing their toes upward when stepping over obstacles, a subtle but important aspect of a natural gait.

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A person wearing the neuroprosthetic system (Hugh Herr and Hyungeun Song)

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Adapting to real-world challenges

One of the most impressive aspects of the AMI system is its versatility. Patients were able to adapt their gait to various real-world conditions, including walking on slopes and navigating stairs. This adaptability is crucial for everyday life, where terrain and challenges can change rapidly.

The system’s responsiveness was put to the test in an obstacle-crossing trial. AMI patients were able to modify their gait to clear obstacles more effectively than those with traditional prosthetics. This ability to rapidly adjust to unexpected challenges is a hallmark of natural limb function and represents a significant leap forward in prosthetic technology.

A person wearing the neuroprosthetic system (Hugh Herr and Hyungeun Song)

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The science of sensory feedback

The success of the AMI system hinges on its ability to augment residual muscle afferents, which are the sensory signals sent from muscles to the nervous system. Remarkably, even a modest increase in these signals allows for significantly improved control and function. This finding highlights the incredible adaptability of the human nervous system and its ability to integrate and utilize even partial sensory information.

Dr. Hyungeun Song, lead author of the study, notes: “One of the main findings here is that a small increase in neural feedback from your amputated limb can restore significant bionic neural controllability, to a point where you allow people to directly neurally control the speed of walking, adapt to different terrain and avoid obstacles.”

A person wearing the neuroprosthetic system (Hugh Herr and Hyungeun Song)

Looking to the future

While this research represents a significant step forward, it’s just the beginning. The team at MIT is exploring ways to further enhance sensory feedback and improve the integration between the human nervous system and prosthetic devices. The AMI procedure has already been performed on about 60 patients worldwide, including those with arm amputations, suggesting broad applicability across different types of limb loss.

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As this technology continues to evolve, we may see even more natural and intuitive control of artificial limbs. The ultimate goal is to create prosthetics that feel and function like a natural part of the user’s body, blurring the line between human and machine.

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A person wearing the neuroprosthetic system (Hugh Herr and Hyungeun Song)

Kurt’s key takeaways

The development of prosthetic limbs controlled by the nervous system marks the beginning of a new era in bionics. It offers hope for improved mobility, independence and quality of life for millions of people living with limb loss. Moreover, it provides valuable insights into the plasticity of the human nervous system and our ability to integrate with advanced technology.

As we continue to push the boundaries of what’s possible in merging biology and technology, we open up new frontiers in human augmentation and rehabilitation. The implications extend far beyond prosthetics, potentially influencing fields such as neurology, robotics and even our understanding of human consciousness and embodiment.

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Technology

Disney Plus is getting vertical video

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Disney Plus is getting vertical video

Disney Plus will be getting a vertical video feed later this year, Disney announced as part of its Global Tech & Data Showcase for advertisers at CES.

Based on an interview with Erin Teague, Disney’s EVP of product management for Disney Entertainment and ESPN, Deadline reports that vertical video in the app could include “original short-form programming, repurposed social clips, refashioned scenes from longer-form episodic or feature titles or a combination.”

“Think all the short-form Disney content you’d want in one unified app,” Teague said onstage at Wednesday’s showcase. “Over time, we’ll evolve the experience as we explore applications for a variety of formats, categories, and content types for a dynamic feed of just what you’re interested in — from Sports, News, and Entertainment — refreshed in real time based on your last visit.”

Update, January 7th: Added quote from Disney’s Erin Teague.

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Plastic bottles could power your devices one day

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Plastic bottles could power your devices one day

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Each year, billions of single-use plastic bottles end up in landfills or oceans. That waste problem keeps growing. Now, a new scientific breakthrough suggests those same bottles could help power your daily life.

Researchers have developed a way to transform discarded plastic water bottles into high-performance energy storage devices called supercapacitors. The work focuses on PET plastic, short for polyethylene terephthalate, which is used in most beverage bottles. 

The research was published in Energy & Fuels and highlighted by the American Chemical Society. Scientists say the discovery could reduce plastic pollution while helping drive cleaner energy technology.

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SCIENTISTS EXTRACT SILVER FROM E-WASTE USING COOKING OIL

Discarded PET water bottles are one of the most common sources of plastic waste worldwide, with hundreds of billions produced each year. (Kurt “CyberGuy” Knutsson)

Why PET plastic waste is such a growing problem

PET plastic is everywhere. According to the researchers, more than 500 billion single-use PET plastic bottles are produced every year. Most are used once and thrown away. Lead researcher Dr. Yun Hang Hu says that scale creates a major environmental challenge.

Instead of letting that plastic pile up, the team focused on upcycling it into something valuable. Their idea was simple but powerful. Turn waste into materials that support renewable energy systems and reduce production costs at the same time.

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Those upcycled materials come together to form an all-waste-plastic supercapacitor designed for fast charging and long term energy storage. (Kurt “CyberGuy” Knutsson)

How plastic bottles can store and release energy

Imagine a device that can charge fast and deliver power instantly. That is exactly what supercapacitors do. They store and release energy much faster than traditional batteries, which makes them useful for electric vehicles, solar power systems and everyday electronics. 

Hu’s team found a way to build these energy storage components using discarded PET plastic water bottles. By reshaping the plastic at extremely high temperatures, the researchers turned waste into materials that can generate electricity efficiently and repeatedly.

Here is how the process works:

For the electrodes, researchers cut PET bottles into tiny, grain-sized pieces. They mixed the plastic with calcium hydroxide and heated it to nearly 1,300 degrees Fahrenheit in a vacuum. That heat transformed the plastic into a porous, electrically conductive carbon powder.

The powder was then formed into thin electrode layers. For the separator, small pieces of PET were flattened and carefully perforated with hot needles. This pattern allowed electric current to pass efficiently while maintaining safety and durability. Once assembled, the device used two carbon electrodes separated by the PET film and submerged in a potassium hydroxide electrolyte.

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Researchers use extreme heat to convert waste PET plastic into porous carbon materials that can store and move electricity efficiently. (Kurt “CyberGuy” Knutsson)

Why the results surprised scientists

When tested, the all-waste-plastic supercapacitor outperformed similar devices made with traditional glass fiber separators. After repeated charging and discharging, it retained 79 percent of its energy capacity. A comparable glass fiber device retained 78 percent. That difference matters. The PET-based design costs less to produce, remains fully recyclable, and supports circular energy storage technologies where waste materials are reused instead of discarded.

What this means for you

This breakthrough could affect everyday life sooner than you might expect. Cheaper supercapacitors can lower the cost of electric vehicles, solar systems and portable electronics. Faster charging and longer device lifespans could follow. It also shows that sustainability does not require giving something up. Waste plastics could become part of the solution instead of the problem. Although this technology is still in development, the research team believes PET-based supercapacitors could reach commercial markets within 5 to 10 years. In the meantime, choosing reusable bottles and plastic-free alternatives still helps reduce waste today.

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Kurt’s key takeaways

Turning trash into energy storage is more than a clever idea. It shows how science can tackle two global challenges at once. Plastic pollution continues to grow. Energy demand does too. This research proves that those problems do not have to be solved separately. By rethinking waste as a resource, scientists are building a cleaner and more efficient future from materials we already throw away.

If your empty water bottle could one day help power your home or car, would you still see it as trash? Let us know by writing to us at Cyberguy.com.

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Amazon’s smart shopping cart for Whole Foods gets bigger, lighter, and adds tap-to-pay

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Amazon’s smart shopping cart for Whole Foods gets bigger, lighter, and adds tap-to-pay

Amazon is launching a revamped version of its smart shopping cart, which it plans to bring to dozens of Whole Foods locations by the end of this year, according to an announcement on Wednesday. The new Dash Cart features a “more responsive” item scanner that’s now located next to the built-in display, along with a new NFC reader that lets you tap to pay with your credit card or phone.

Amazon’s previous Dash Cart design put scanners beneath and in front of the handle, potentially making them harder to spot. It also only let you pay with the credit card attached to your Amazon account.

With the upgraded Dash Cart, you’ll find a new scale alongside the cart’s handle, which Amazon says “works in tandem with on-cart cameras, weight sensors, and deep learning models to ensure accurate pricing for every item.” The upgraded Dash Cart eliminates the large sensors facing inside the cart as well, offering a 40 percent larger capacity and a 25 percent lighter weight.

The Dash Cart shows an interactive map of the store on its display, similar to Instacart’s smart Caper Cart. You can sync your shopping list created with Alexa, too, and see how much you’re spending as you add more items to your cart. The cart uses built-in sensors and computer vision to detect when you’ve removed an item, allowing it to automatically update your total. When you’re done shopping, you can skip the checkout line and leave the store in a designated Dash Cart lane.

Amazon is launching its new Dash Cart as the company shakes up its grocery business, which has tied Whole Foods more closely to the Amazon brand. The company has already brought its new Dash Cart to three Whole Foods stores in McKinney, Texas; Reston, Virginia; and Westford, Massachusetts, along with two Amazon Fresh stores.

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