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9/27/2007

EU project builds artificial brain for robots

via CORDIS

Scientists in Spain have achieved a giant leap for robotkind by building the first artificial cerebellum to help them interact with humans. The cerebellum is the portion of the brain that controls motor functions.

The project will now implant the man-made cerebellum into a robot so as to make its movements and interaction with humans more natural. The overall goal is to incorporate the cerebellum into a robot designed by the German Aerospace Centre in two year’s time. The researchers hope that their work will also result in clues on how to treat cognitive diseases such as Parkinson’s

The four-year project, dubbed Sensopac (SENSOrimotor structuring of perception and action for emerging cognition) is funded by the EU under its Sixth Framework Programme (FP6) and brings together physicists, neuroscientists and electronic engineers from leading universities in Europe.

The scientists at the University of Granada are focusing on the design of microchips that incorporate a full neuronal system, emulating the way the cerebellum interacts with the human nervous system.

Implanting the man-made cerebellum in a robot will allow it to manipulate and interact with other objects with far greater effectiveness than previously managed.

‘Although robots are increasingly more important to our society and have more advanced technology, they cannot yet do certain tasks like those carried out by mammals,’ says Professor Eduardo Ros Vidal, who is coordinating the work at the University of Granada.

‘We have been talking about humanoids for years but we do not yet see them on the street or use the unlimited possibilities they offer us,’ the Professor added.

One possible use for the robots would be as home-helpers for disabled people.

The next step for the Sensopac project will be to develop an artificial skin for the robots, making them look more human-like, as well as making them information-sensitive in the same way as human skin is.

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9/20/2007

AI, nanotech and the future of the human species

via ZDNet

An interview with Steve Jurvetson

Jurvetson shares the view espoused by Ray Kurzweil that the next 20 years of technological progress will be equivalent to the entire 20th century, and will help fuel great progress in advanced AI.

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9/15/2007

Personalized Embryonic Stem Cells for Sale

via Technology Review

It’s a new, rather dicey form of life insurance. A company in California called StemLifeLine has announced that it will offer a service to generate stem cells from excess frozen embryos stored after in vitro fertilization (IVF). The company promises a huge potential payoff: the cells could one day be used to treat disease in the buyers or in their families. But the service is already garnering criticism from some scientists and ethicists who say that without current medical uses for those cells, there’s no point in people paying for them.

…The new service is meant to take advantage of a growing interest in the field of regenerative medicine. Stem cells from adult blood or umbilical-cord blood are already used to treat some diseases, including sickle-cell anemia and several forms of leukemia. But these cells are largely limited to treating blood-related disorders and can’t be grown in large numbers. Embryonic stem cells, on the other hand, can be coaxed to form virtually any type of cell in the body and can theoretically be replicated indefinitely. Scientists are developing ways to use them to replenish cells lost or damaged in ailments such as diabetes, Parkinson’s disease, and heart disease. But as of now, those treatments are limited to the lab: no embryonic stem-cell-based therapies are approved for human use.

…The technology to derive these cells is not new. Scientists at StemLifeLine use a similar procedure to that employed by research scientists for almost a decade, although the StemLifeLine scientists have refined it so that the resulting cells are fit for human use. For less than $10,000 (actual price depends on the collaborating IVF clinic), clients can send in their excess embryos and, in return, receive a line of stem cells that have been “quality assured,” meaning they have been checked for the molecular markers that signify that the cells can be differentiated into multiple cell types. The company received certification as a tissue bank from the state of California last month, and it’s in the process of generating cell lines for its first group of clients.

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9/9/2007

Artificial life likely in 3 to 10 years

via Yahoo
Around the world, a handful of scientists are trying to create life from scratch and they’re getting closer.

Experts expect an announcement within three to 10 years from someone in the now little-known field of “wet artificial life.”

“It’s going to be a big deal and everybody’s going to know about it,” said Mark Bedau, chief operating officer of ProtoLife of Venice, Italy, one of those in the race. “We’re talking about a technology that could change our world in pretty fundamental ways — in fact, in ways that are impossible to predict.”

That first cell of synthetic life — made from the basic chemicals in DNA — may not seem like much to non-scientists. For one thing, you’ll have to look in a microscope to see it.

“Creating protocells has the potential to shed new light on our place in the universe,” Bedau said. “This will remove one of the few fundamental mysteries about creation in the universe and our role.”

And several scientists believe man-made life forms will one day offer the potential for solving a variety of problems, from fighting diseases to locking up greenhouse gases to eating toxic waste.

Bedau figures there are three major hurdles to creating synthetic life:

• A container, or membrane, for the cell to keep bad molecules out, allow good ones, and the ability to multiply.

• A genetic system that controls the functions of the cell, enabling it to reproduce and mutate in response to environmental changes.

• A metabolism that extracts raw materials from the environment as food and then changes it into energy.

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9/6/2007

Complete DNA Sequence of Single Human Decoded

via Globe & Mail

Scientists have for the first time decoded the complete DNA sequence of a single human being, a mammoth feat that shatters old beliefs about the “book of life” and marks a historic step toward the era when medical care can be tailored to an individual’s genes.

With the boggling array of genetic quirks, burps and hiccups found in the full DNA sequence of one healthy middle-aged man, the human genome has now shrugged off its reputation for being perhaps the world’s most boring and predictable molecule.

…The new work suggests that the genetic code in the chromosomes we carry can vary widely, not only between any two strangers waiting at a bus stop, but between brothers and sisters.

“The biggest single surprise is how much we missed the boat with the human genome seven years ago, and how different we really are,” Dr. Venter said in an interview. “The overwhelming message back then was that we are all like identical clones of each other. … It’s comforting to know we are more unique than that.”

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9/5/2007

Neurobiologists jam brain’s memory machine

via CBC

Scientists have found a way to erase long-term memory in rats, a discovery that could boost development of treatments for those suffering from memory loss or dementia.

The findings reveal that the memory-storage process is far more dynamic than once thought. Researchers involved in the study liken memory to a machine that must be constantly maintained in order to run smoothly. They found a way to briefly jam this machine using drugs and erase stored memories.

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9/3/2007

IBM measures single-atom memory, molecular switch

via EE Times

Even the highest density hard-disk drives use approximately 1 million magnetic atoms to store a single bit of information. IBM’s Almaden Research Center (San Jose, Calif.) has measured the ability to store a bit on a single atom, portending hard drives with ultra-high storage capacity.

Simultaneously, IBM’s Zurich Research Lab has demonstrated a molecular switch that could replace current silicon-based chip technology with processors so small that a supercomputer could fit on a chip the size of a speck of dust.

IBM’s claims its atomic-scale demonstration promises to pack up to 1,000 times as much information on a hard disk than current technologies. Such hard disks could store 30,000 full-length movies on a device the size of an iPod.

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