The Reality of Robot Surrogates

How far are we from sending robots into the world in our stead?

Imagine a world where you're stronger, younger, better looking, and don't age. Well, you do, but your robot surrogate—which you control with your mind from a recliner at home while it does your bidding in the world—doesn't.

It's a bit like The Matrix, but instead of a computer-generated avatar in a graphics-based illusion, in Surrogates—which opens Friday and stars Bruce Willis—you have a real titanium-and-fluid copy impersonating your flesh and blood and running around under your mental control. Other recent films have used similar concepts to ponder issues like outsourced virtual labor (Sleep Dealer) and incarceration (Gamer).

The real technology behind such fantastical fiction is grounded both in far-out research and practical robotics. So how far away is a world of mind-controlled personal automatons?

"We're getting there, but it will be quite a while before we have anything that looks like Bruce Willis," says Trevor Blackwell, the founder and CEO of Anybots, a robotics company in Mountain View, Calif., that builds "telepresence" robots controlled remotely like the ones in Surrogates.

Telepresence is action at a distance, or the projection of presence where you physically aren't. Technically, phoning in to your weekly staff meeting is a form of telepresence. So is joysticking a robot up to a suspected IED in Iraq so a soldier can investigate the scene while sitting in the (relative) safety of an armored vehicle.

Researchers are testing brain-machine interfaces on rats and monkeys that would let the animals directly control a robot, but so far the telepresence interfaces at work in the real world are physical. Through wireless Internet connections, video cameras, joysticks, and sometimes audio, humans move robots around at the office, in the operating room, underwater, on the battlefield, and on Mars.

A recent study by NextGen Research, a market research firm, projects that in the next five years, telepresence will become a significant feature of the US $1.16 billion personal robotics market, meaning robots for you or your home.

According to the study's project manager, Larry Fisher, telepresence "makes the most sense" for security and surveillance robots that would be used to check up on pets or family members from far away. Such robots could also allow health-care professionals to monitor elderly people taking medication at home to ensure the dosage and routine are correct.

Right now, most commercial teleoperated robots are just mobile webcams with speakers, according to NextGen. They can be programmed to roam a set path, or they can be controlled over the Internet by an operator. iRobot, the maker of the Roomba floor cleaner, canceled its telepresence robot, ConnectR, in January, choosing to wait until such a robot would be easier to use. But plenty of companies, such as Meccano/Erector and WowWee, are marketing personal telepresence bots.

Blackwell's Anybots, for example, has developed an office stand-in called QA. It's a Wi-Fi enabled, vaguely body-shaped wheeled robot with an ET-looking head that has cameras for eyes and a display in its chest that shows an image of the person it's standing in for. You can slap on virtual-reality goggles, sensor gloves, and a backpack of electronics to link to it over the Internet for an immersive telepresence experience. Or you can just connect to the robot through your laptop's browser.

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Original article posted by Anne-Marie Corley // September 2009

Honda's U3-X Personal Mobility Device is the Segway of unicycles

Yeah, we've seen a self-balancing unicycle before, but the brand new U3-X from Honda takes it to another level. A creepy-sterile, awesomely futuristic Honda level, to be precise. What makes the U3-X particularly interesting is it has the regular large wheel of a unicycle, but that wheel is actually made up of several small wheels in a series, which can rotate independently, meaning that the device can go forward, backward, side-to-side and diagonally, all being controlled with a simple lean. Honda credits its ASIMO research for this multi-directional capability, though we're not sure we see it -- ASIMO is biped, after all -- but far be it from us to discredit an excuse to keep up the good work on the ASIMO front. Right now the "experimental model" of the U3-X gets a single hour of battery and weighs under 22 pounds, with a seat and foot rests that fold into the device for extra portability. No word of course on when the thing might make it to market, but Honda plans to show it off next month at the Tokyo Motor Show. A devastatingly short video of the U3-X in action is after the break.

Stimulating Sight: Retinal Implant Could Help Restore Useful Level Of Vision To Certain Groups Of Blind People

Retinal Implant receives visual data from a camera mounted on a pair of glasses. The coil sends the images to a chip attached to the side of the eyeball, which processes the data and sends it to electrodes implanted below the retina. (Credit: Courtesy of Shawn Kelly)

Inspired by the success of cochlear implants that can restore hearing to some deaf people, researchers at MIT are working on a retinal implant that could one day help blind people regain a useful level of vision.

The eye implant is designed for people who have lost their vision from retinitis pigmentosa or age-related macular degeneration, two of the leading causes of blindness. The retinal prosthesis would take over the function of lost retinal cells by electrically stimulating the nerve cells that normally carry visual input from the retina to the brain.

Such a chip would not restore normal vision but it could help blind people more easily navigate a room or walk down a sidewalk.

"Anything that could help them see a little better and let them identify objects and move around a room would be an enormous help," says Shawn Kelly, a researcher in MIT's Research Laboratory for Electronics and member of the Boston Retinal Implant Project.

The research team, which includes scientists, engineers and ophthalmologists from Massachusetts Eye and Ear Infirmary, the Boston VA Medical Center and Cornell as well as MIT, has been working on the retinal implant for 20 years. The research is funded by the VA Center for Innovative Visual Rehabilitation, the National Institutes of Health, the National Science Foundation, the Catalyst Foundation and the MOSIS microchip fabrication service.

Led by John Wyatt, MIT professor of electrical engineering, the team recently reported a new prototype that they hope to start testing in blind patients within the next three years.

Electrical stimulation

Patients who received the implant would wear a pair of glasses with a camera that sends images to a microchip attached to the eyeball. The glasses also contain a coil that wirelessly transmits power to receiving coils surrounding the eyeball.

When the microchip receives visual information, it activates electrodes that stimulate nerve cells in the areas of the retina corresponding to the features of the visual scene. The electrodes directly activate optical nerves that carry signals to the brain, bypassing the damaged layers of retina.

One question that remains is what kind of vision this direct electrical stimulation actually produces. About 10 years ago, the research team started to answer that by attaching electrodes to the retinas of six blind patients for several hours.

When the electrodes were activated, patients reported seeing a small number of "clouds" or "drops of blood" in their field of vision, and the number of clouds or blood drops they reported corresponded to the number of electrodes that were stimulated. When there was no stimulus, patients accurately reported seeing nothing. Those tests confirmed that retinal stimulation can produce some kind of organized vision in blind patients, though further testing is needed to determine how useful that vision can be.

After those initial tests, with grants from the Boston Veteran's Administration Medical Center and the National Institutes of Health, the researchers started to build an implantable chip, which would allow them to do more long-term tests. Their goal is to produce a chip that can be implanted for at least 10 years.

One of the biggest challenges the researchers face is designing a surgical procedure and implant that won't damage the eye. In their initial prototypes, the electrodes were attached directly atop the retina from inside the eye, which carries more risk of damaging the delicate retina. In the latest version, described in the October issue of IEEE Transactions on Biomedical Engineering, the implant is attached to the outside of the eye, and the electrodes are implanted behind the retina.

That subretinal location, which reduces the risk of tearing the retina and requires a less invasive surgical procedure, is one of the key differences between the MIT implant and retinal prostheses being developed by other research groups.

Another feature of the new MIT prototype is that the chip is now contained in a hermetically sealed titanium case. Previous versions were encased in silicone, which would eventually allow water to seep in and damage the circuitry.

While they have not yet begun any long-term tests on humans, the researchers have tested the device in Yucatan miniature pigs, which have roughly the same size eyeballs as humans. Those tests are only meant to determine whether the implants remain functional and safe and are not designed to observe whether the pigs respond to stimuli to their optic nerves.

So far, the prototypes have been successfully implanted in pigs for up to 10 months, but further safety refinements need to be made before clinical trials in humans can begin.

Wyatt and Kelly say they hope that once human trials begin and blind patients can offer feedback on what they're seeing, they will learn much more about how to configure the algorithm implemented by the chip to produce useful vision.

Patients have told them that what they would like most is the ability to recognize faces. "If they can recognize faces of people in a room, that brings them into the social environment as opposed to sitting there waiting for someone to talk to them," says Kelly.

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Journal reference:

1. Shire, D. B.; Kelly, S. K.; Chen , J.; Doyle , P.; Gingerich, M. D.; Cogan, S. F.; Drohan, W. A.; Mendoza, O.; Theogarajan, L.; Wyatt, J. L.; Rizzo, J. F. Development and Implantation of a Minimally Invasive Wireless Subretinal Neurostimulator. IEEE Transactions on Biomedical Engineering, October 2009 DOI: 10.1109/TBME.2009.2021401

Adapted from materials provided by Massachusetts Institute of Technology. Original article written by Anne Trafton, MIT News Office.