HISTORY近 30 天历史柱高表示当天去重热搜数量
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08/29—09/27 有历史数据
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Lab on a Contact Lens Can Measure Stress Through SerotoninA “lab on a contact lens” can measure the neurotransmitter serotonin in tears, potentially offering a novel wearable method to noninvasively analyze levels of stress, a new study finds. “Tears could become a practical, noninvasive source of biochemical information that can be measured repeatedly over time,” says Yangzhi Zhu , director of the biomedical device center at the Terasaki Institute for Biomedical Innovation in Los Angeles. “Most biomarker testing today still relies on blood draws or isCharles Q. Choi - 02
Ingestible Paper Battery Powers Biodegradable Medical DevicesTypically, if you swallow a battery, it’s a mistake that calls for a trip to the hospital. But that’s not the case with a new ingestible paper battery developed by scientists at MIT. The battery could be used to power medical devices inside the body before safely breaking down. In tests in live pigs, the paper battery “generated sufficient power to perform meaningful functions inside the gastrointestinal tract, including meter-scale wireless communication and continuous electrical stimulation ovCharles Q. Choi - 03
This Prosthetic Armband Senses Muscles With LightProsthetic arms and hands often stop working when wearers start to sweat. A New Zealand team of engineers and assistive technologists argues that a small change—using light-based sensors on the skin instead of electrical sensors that pick up nerve activity—could fix the problem. For decades, electrical muscle sensors have been the default way for a device to infer the user’s desired hand, wrist, and finger motions. By placing electrodes on a prosthetic-wearer’s arm near key muscle groups, the seJason Hahr - 04
Google DeepMind Maps 9 Billion Possible DNA VariantsDNA is often explained as a codebook or set of instructions for producing proteins, and ultimately, life. Some stretches of DNA, called genes, code for proteins, but the vast majority of DNA is considered “noncoding.” Some of it has no known function, while other segments are critical to regulating gene activity. These regulatory elements can interact in complicated ways, and their effects can vary across different cells and tissues. Some also influence genes located far away in the genome. UndeGreg Uyeno - 05
The First Battery Was Inspired By a Dead FrogIn a display case on the lower level of the Faraday Museum at the Royal Institution in London, there’s an unassuming stack of gray metal discs and blotting paper. It’s not at all obvious that this humble object is the starting point of today’s multibillion-dollar global battery industry. The object’s invention in 1799 grew out of a disagreement that Alessandro Volta —the Italian physicist for whom the unit of measurement for electrical potential is named—had with his friend Luigi Galvani over aAllison Marsh - 06
Brain Implant Uses Infrared Light to Send Neural SignalsFor years, brain-computer interfaces (BCIs) have promised to help people with severe paralysis communicate. The technology is still experimental, but more researchers and companies like Neuralink and Synchron are now testing these devices in human clinical trials . Geneva-based Ability Neurotech is the latest to join their ranks, as it gears up to move its optical BCI from brief tests during surgery toward months-long use in a clinical trial. Last month, the company started an intraoperative stuShannon Cuthrell - 07
Augmental’s Mouthpad Is a Touchpad for Your TongueWhen Ryan Hudson-Peralta, a self-described “Apple fanboy,” isn’t using the computer, he’s on his phone. But all of this screentime—and mouse use—can take a toll on his body. Hudson-Peralta , a designer, speaker, and disability advocate, was born with no hands and uses a wheelchair. “With my disability, I was born without shoulder sockets,” he says, and using a traditional computer mouse for an extended period leads to shoulder pain. Through a consultancy he founded, Equal Accessibility , Hudson-Greg Uyeno - 08
AI Can Now Design Functional Viruses. Should We Worry?Sixteen viruses is not a large number. But the 16 bacteria-infecting viruses described on 6 August in Science were no ordinary specimens. They were not fished out of a sewage outflow or dug up from a soil sample, which is where such things normally come from. They were written by a genomic language model trained on vast troves of DNA sequences. Researchers at Stanford University designed the small viruses from scratch, producing the first complete, functional genomes ever generated by AI. And thElie Dolgin - 09
Solaris Project Will Study a Total Eclipse and the HeartOn 12 August, just before sunset, a strip of the Iberian Peninsula will witness its first total solar eclipse in more than 120 years. For many across the region, this is a rare chance to see the moon block out the sun. For one group of researchers, it’s an even rarer chance to record the human body’s reaction to that awesome phenomenon . For the first time, scientists will monitor those observers with the aid of smartwatches and fitness trackers. In Catalonia, the Solaris project is recruiting wRahul Rao - 10
Sleep Patch Could Track Brain’s Nightly Cleansing RitualWhen you get a good night’s sleep, you aren’t just giving your brain a chance to rest. Sleep activates a system only discovered in 2012 that washes out brain waste. Called the glymphatic system, it’s comparable to the better-known lymphatic system that moves and filters fluids throughout your body. A healthy glymphatic system is linked to good cognitive function and could prevent neurodegenerative diseases like Alzheimer’s, but monitoring it during sleep has been practically impossible in humansAlex Music - 11
Injectable Outlet in the Body Powers Bioelectric ImplantsSupplying power to bioelectronic implants is essential for long-term operations. However, placing a socket on them can invite invasions from microbial intruders, and wireless charging antennas are often bulky. Now scientists have created a new implantable power outlet accessible via needle they say can overcome the challenges faced by previous charging techniques. “It is intended to serve as a general access point that could be integrated with many existing implantable bioelectronic devices, incCharles Q. Choi - 12
Exosuit Aids Walking Without MotorsResearchers in China have developed a soft exoskeleton for the lower body that is completely motor-free and is driven instead by high-power artificial muscles. The harness reduces the amount of energy a person spends walking by nearly a sixth, surpassing most hip-assistive exoskeletons, according to a study detailing the device published 10 July in the journal Science Advances . Companies and research groups worldwide are developing soft exoskeletons as wearable harnesses that can assist and augCharles Q. Choi - 13
Cortisol Could Be the Next Frontier for WearablesIn barely a decade, the continuous glucose monitor has turned real-time blood sugar into a number that millions track on their phones. The small round patch on the back of the arm is everywhere now—on diabetics, athletes, biohackers, and the simply curious. And for people with diabetes , it has revolutionized management of their disease. Now a startup called Adaptyx Biosciences has taken a major step toward doing for the stress hormone cortisol what the glucose sensors did for blood sugar. LastElie Dolgin - 14
This AI Folds DNA Into Mini MasterpiecesShaped like dogs, stars, and the Mona Lisa, you could mistake these DNA structures for fun-shaped macaroni if they weren’t only nanometers wide. South Korean scientists made the constructions using a technique called DNA origami , which can bend genetic material into any form. Designing DNA strands so they’ll fold into a specific shape typically requires tedious manual work, but the researchers behind the playful fabrications have developed a shortcut using generative AI. The AI model, called GeAlex Music - 15
How a Google DeepMind Spin-off Hunts Hidden Drug TargetsFor more than a decade, artificial intelligence has been touted as a way to dramatically accelerate drug discovery . Yet despite billions of dollars in investment, relatively few AI-designed medicines have made it to patients. That’s partially because the timelines for careful drug testing can’t be easily compressed—and partially because drug development is just really hard. Isomorphic Labs , the Google DeepMind spin-off that’s building on DeepMind’s Nobel Prize-winning work on protein structureEliza Strickland - 16
Ultrasound Patch Could Form Future PacemakerWith the reliability of a quality wristwatch, pacemakers send out electric pulses to keep your heart beating at a steady rate. But unlike a watch, when the batteries need replacement, it’s a surgical affair—one that can be required as often as every five years . While the risks of having a pacemaker implanted are low, going under the knife always creates the potential for complications. A group of California and Massachusetts scientists have developed a pacemaker that works without requiring surAlex Music - 17
Could This Blood-Filtering Device Help Treat Ebola?As the deadly Bundibugyo strain of Ebola continues to ravage parts of Central Africa, physicians once again find themselves scrambling for ways to keep the sickest patients alive. Existing antibody treatments are strain-specific and don’t target the virus responsible for the current outbreak, leaving few therapies capable of clearing virus from the bloodstream. This forces doctors to rely largely on supportive care for people in advanced stages of disease. That treatment gap is reviving interestElie Dolgin - 18
Poetry for Engineers: Cyborg LaboratoryThis is the place where you face yourself, the you that could be you with a few different parts, a pump for your heart, eyes off color, and fresh off the shelf fake hair (a bit obvious), skin smoothed. You’re not perfect, but it’s a good start. Down to small digits, you’ll be improved. Memory maintained by small motors, as long as these gizmos don’t glitch. What’s before you? Full replacement or a constant game of test and switch, pieces peeled off, disconnected, removed, until you are not yoursPaul Jones - 19
Leap in DNA Synthesis Slashes Time to Build New Genetic SequencesA new method for writing DNA promises to unlock the potential of generative AI in biology, giving scientists a fast, affordable, and accurate way to physically build the novel genetic sequences that predictive models are now producing faster than anyone can construct them. The technique, called Sidewinder, can assemble dozens of genetic sequences simultaneously in a single test tube, producing just one incorrect junction for every 10 million assembly events—a level of precision that far surpasseElie Dolgin - 20
System Boosts Speech Volume Based on Brain SignalsIt can be difficult to carry on conversation in a crowded public setting, and even more so with any degree of hearing loss. But what if you could amplify only the person you wanted to hear and suppress the rest ? What if a computer could do that automatically by reading your brain? When we focus on a particular person talking, we subconsciously track the gradual modulations in speech volume, which vary from speaker to speaker. This characteristic pattern appears in the brain activity of the listGreg Uyeno - 21
Developers: Get Your Medical Mobile App Certified By IEEEPatients who use mobile applications to manage medical conditions including depression and chronic pain might assume the apps have been evaluated by regulatory agencies to be safe and effective. But that isn’t necessarily the case. Most of the more than 55,000 medical apps that claim to diagnose or treat a condition—or ones that provide clinical decision support, known as “therapeutic” apps—have never been assessed by any trusted neutral bodies or regulatory agencies to evaluate them for technicKathy Pretz - 22
Can AI Chatbots Reason Like Doctors?One of the earliest stated goals for computing in medicine was to aid in clinical reasoning: the decision-making steps required to reach a diagnosis and form a treatment plan. And over the years, researchers have built many clinical decision support systems, which have typically been purpose-built, with painstakingly written rules about symptoms, test thresholds, and medication interactions. As artificial intelligence capabilities develop, clinical reasoning is a natural application. Now, a largGreg Uyeno - 23
Chatbots Need Guardrails to Prevent Delusions and PsychosisMillions of people worldwide are turning to chatbots like ChatGPT or Claude, and a proliferating class of specialized AI companionship apps for friendship, therapy, or even romance. While some users report psychological benefits from these simulated relationships, research has also shown the relationships can reinforce or amplify delusions, particularly among users already vulnerable to psychosis. AIs have been linked to multiple suicides, including the death of a Florida teenager who had a montStephen Cousins - 24
Bionic Tech Must Prove Itself Beyond the LabI first met Robert Woo in 2011, during his third time walking in a powered exoskeleton . The architect had been paralyzed in a construction accident four years earlier, but he was determined to get back on his feet. Watching him clunk across a rehab room in an exoskeleton prototype, the technology felt astonishing. I had the same reaction when reporting on early brain-computer interfaces (BCIs), which enabled paralyzed people to move robotic arms or communicate by thought alone . Both types of bEliza Strickland - 25
Do We Really Need Smarter AI to Cure Cancer?By some estimates, more than a trillion dollars have already been invested in artificial intelligence. But large tech companies , including Meta and OpenAI, are still not content with today’s AI; they say they’ve set their sights on powerful, versatile AI that by some measure would match or even exceed human performance. A remarkable amount of resources is being poured into developing artificial general intelligence (AGI) or even more capable artificial super intelligence (ASI). Excitement arounGreg Uyeno - 26
Chips Sense Free Radicals With SpeedWhen things go bad—be it beer, batteries, or blood—they generate a certain class of molecules called free radicals. Scientists use a technique called electron paramagnetic resonance (EPR) spectroscopy to pick up the concentration and identities of free radicals, but today’s equipment relies on huge, heavy magnets. Groups of researchers in California, Germany, and now France have been inventing ways to shrink the whole spectroscopy system onto a chip, so scientists can take the instrument into thSamuel K. Moore - 27
Can Biologists Rewrite the Genome’s Spaghetti Code?What if biology stopped being something we study and started becoming something we design? That’s the premise of Adrian Woolfson ’s new book, On the Future of Species: Authoring Life by Means of Artificial Biological Intelligence , which published on 28 April from MIT Press . He argues that advances in AI and DNA synthesis are pushing biology toward an engineering paradigm—one in which scientists can generate new genetic sequences and eventually build organisms to order. He calls this emerging cEliza Strickland - 28
Engineering Collisions: How NYU Is Remaking Health ResearchThis sponsored article is brought to you by NYU Tandon School of Engineering . The traditional approach to academic research goes something like this: Assemble experts from a discipline, put them in a building, and hope something useful emerges. Biology departments do biology. Engineering departments do engineering. Medical schools treat patients. NYU is turning that model inside out. At its new Institute for Engineering Health , the organizing principle centers around disease states rather thanThomas Machinchick - 29
Contact Lens Uses Microfluidics to Monitor and Treat GlaucomaMore than 80 million people suffer from glaucoma globally , making it the second most common cause of blindness worldwide. The disease—caused by elevated internal eye pressure damaging the optic nerve—is incurable, but its progression can be slowed with drugs to control eye pressure. Now, researchers have developed an electronics-free smart contact lens that can track the disease in real time and also deliver drugs in response. The all-polymer lens includes a microfluidic sensor that monitors eyEdd Gent - 30
What It’s Like to Live With an Experimental Brain ImplantScott Imbrie vividly remembers the first time he used a robotic arm to shake someone’s hand and felt the robotic limb as if it were his own. “I still get goosebumps when I think about that initial contact,” he says. “It’s just unexplainable.” The moment came courtesy of a brain implant: an array of electrodes that let him control a robotic arm and receive tactile sensations back to the brain. Getting there took decades. In 1985, Imbrie had woken up in the hospital after a car accident with a broEdd Gent