stanford university

See-through brain lets scientists spot the connections

Studying the brain can be a tricky business.

The interesting stuff, such as neurons and how they communicate, is obscured by things like fatty tissue. Usually, scientists just cut it up into paper-thin slices to study, like with Einstein's brain, but a team of scientists at Stanford University, led by Karl Deisseroth and Kwanghun Chung, have found what the director of the National Institute of Mental Health Thomas Insel is calling "one of the most important advances for doing neuroanatomy in decades."

The new technique lets researchers leave the brain intact, which puts an end to the damage that slicing can cause. It involves infusing the brain with acrylamide, which binds the proteins; once heated, it polymerizes, preserving the important molecules. Then, the brain is rinsed with sodium dodecyl sulfate (SDS) detergent, which strips the fatty lipids, leaving intact the proteins that the researchers wish to study. … Read more

Living side by side with robots

STANFORD, Calif.--When I walked onto the Stanford University campus this week and into the Volkswagen Automotive Innovation Lab, I was greeted by a short, gray robot waving his two long arms -- he was looking for a high-five.

All around me robots of all sizes were roaming the floor. I was trapped -- in the future. … Read more

Robo-cars face a new threat: Lawyers

STANFORD, Calif. -- Self-driving cars are expected to save lives: a vehicle driven by a human will experience, on average, a crash every 160,000 miles or so. It's only a matter of time, advocates say, before robots become better drivers than us.

That is, if the lawyers let them. Industry insiders are already fretting about a host of legal problems that could bedevil robot car makers once a sufficient number of their creations take to the roads. Product liability, tort law, negligence, foreseeable harm, patent encumbrance, and design defects are only some of the concerns.

"The longer … Read more

Stick these solar cells on your phone or whatever else

What if everything around you had the potential to generate small amounts of energy?

We've seen flexible, even stick-on photovoltaic cells before, but these decal-style solars are compact and fun.

In a recent article in Scientific Reports, Stanford University mechanical engineering assistant professor Xiaolin Zheng and colleagues describe thin-film solar cells that can be peeled and stuck anywhere.

The researchers manufactured them on a reusable silicon and silicon dioxide wafer and then stuck them on paper, plastic, and window glass.

The original cell efficiency of 7.5 percent was maintained, and the manufacturing uses existing processes and materials. That … Read more

Latest camera-trapping tech helps capture more animals

Since the late 1800s, researchers and the curious have been trying to use photography to capture images of animals in the wild. Over the decades, the technology behind these camera traps has gone from trip-wire film cameras to sophisticated digital rigs. And these days, with the accessibility of digital video, the footage being collected is absolutely arresting. Check out the World Wildlife Fund or the Wildlife Conservation Society to see some of their videos of tigers, gorillas, and rhinos in their natural habitats.

Closer to home, we caught up with a technology specialist who works at Jasper Ridge, Stanford University'… Read more

Facebook hackathon shows off the Zuckerbergs of tomorrow

There's a "Battle of the Bay" going on tonight at Facebook's Menlo Park, Calif., headquarters, and it's happening in a haze of Chinese food, juggling, music, and coding. And maybe some unicycling, if you're lucky.

The social network holds its second Stanford versus Cal (University of California at Berkeley) hackathon for budding coders to try their hands at creating new products. Nearly 200 students from both campuses sat in front of their laptops at around 5 p.m. with no intention of stopping until 3 p.m. tomorrow. That's what Facebook hackathons are … Read more

Researchers mod computer to copycat human motions

Webcams and video-conferencing software like Skype have really enhanced the way we communicate with friends, family, and colleagues around the world. Even so, talking to a floating head on a computer screen can still feel pretty cold, and it doesn't look like we're going to get a teleportation device any time soon (le sigh). However, researchers at Stanford University are hoping to make that interaction a little more lifelike with a computer that can mimic human motions.

David Sirkin and Wendy Ju from Stanford's Center for Design Research created a motorized flat-screen display that copycats various human motions like shrugging, nodding, and laughing. The team did so by adding motors to the Apple iMac G4 and then linking it to software that reads a person's movements and instructs the G4's moveable arm to perform one of nine motions. … Read more

Virtual reality comes to life at Stanford lab (video)

What does it feel like to chop down a tree? Or walk a narrow plank suspended above a deep pit? Stanford University's Virtual Human Interaction Lab can take you there.

Professor Jeremy Bailenson has created a thoroughly convincing virtual-reality environment at the Stanford lab. But what makes it feel so real? The lab uses technology to provide sensory feedback in a couple of different ways. There are devices called "butt-kickers" under the floor that make it shake, 22 speakers provide audio input, and, lastly, there's the head-mounted display that offers a stereoscopic view of the virtual … Read more

Stanford University researchers break NuCaptcha video security

When it launched in 2010, NuCaptcha touted its proprietary technology as being able to "provide the highest level of security available" by using video streams to display those distorted letters you type in to prove you're really a human.

Now, however, the company's claims of providing "the next generation of Captcha security" look a tad optimistic.

A team of Stanford University researchers said today that they discovered a way to break the security of a recent version of NuCaptcha's video Captcha by borrowing concepts from the field of machine vision, which developed techniques … Read more

Outsmarted: Captcha security not much of a gotcha

PALO ALTO--A team of Stanford University researchers has bad news to report about Captchas, those often unreadable, always annoying distorted letters that you're required to type in at many a Web site to prove that you're really a human.

Many Captchas don't work well at all. More precisely, the researchers invented a standard way to decode those irksome letters and numbers found in Captchas on many major Web sites, including Visa's Authorize.net, Blizzard, eBay, and Wikipedia.

Their decoding technique borrows concepts from the field of machine vision, which has developed techniques to control robots by … Read more