The monkey was in Eberhard Fetz's lab at the University of Washington in Seattle. The experiment, performed last year, was the first demonstration of a new treatment that might one day cure paralysis, which is typically caused by a broken connection in the spinal cord. Though much work has focused on using stem cells to regrow damaged nerve fibres, some researchers believe that an electronic bypass like this is equally viable.
The idea is to implant electronic chips in the relevant regions of the brain to record neural activity. Then a decoder deciphers the neural chatter, often from thousands of neurons, to figure out what the brain wants the body to do. These messages must then be relayed - ideally wirelessly - to electrodes that deliver a pulse of electricity to stimulate the muscles into action. Such "brain chips" are already restoring hearing to the deaf and vision to the blind, and helping to stave off epileptic fits, so the idea isn't as far-fetched as it might sound (see "Bionic medicine"). If you look at our list of future space telescope concepts, just about all of them are going to go to L2," says Dan Lester of the University of Texas, Austin, who spoke to the spaceflight review committee in July. "That's going to be a very busy place out there."
But what would humans do there? One useful task is repairing and upgrading the new telescopes, like astronauts have done five times with Hubble.
"Hubble is probably the most productive scientific facility ever developed in the history of science, and it's largely because every four or five years, we take out the old instruments ... and go up with brand-new instruments that address different questions and embrace the latest technology," Lester says. "If we want to have humans having anything to do with these new telescopes, we really have to think about Lagrange points."
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Am vazut multe ceasuri superbe pe www.topceas.roAm vazut multe ceasuri superbe pe www.topceas.roAm vazut multe ceasuri superbe pe www.topceas.roBitDefender ProblemBitDefender 2010 ProblemBitDefender 2010
The idea is to implant electronic chips in the relevant regions of the brain to record neural activity. Then a decoder deciphers the neural chatter, often from thousands of neurons, to figure out what the brain wants the body to do. These messages must then be relayed - ideally wirelessly - to electrodes that deliver a pulse of electricity to stimulate the muscles into action. Such "brain chips" are already restoring hearing to the deaf and vision to the blind, and helping to stave off epileptic fits, so the idea isn't as far-fetched as it might sound (see "Bionic medicine"). If you look at our list of future space telescope concepts, just about all of them are going to go to L2," says Dan Lester of the University of Texas, Austin, who spoke to the spaceflight review committee in July. "That's going to be a very busy place out there."
But what would humans do there? One useful task is repairing and upgrading the new telescopes, like astronauts have done five times with Hubble.
"Hubble is probably the most productive scientific facility ever developed in the history of science, and it's largely because every four or five years, we take out the old instruments ... and go up with brand-new instruments that address different questions and embrace the latest technology," Lester says. "If we want to have humans having anything to do with these new telescopes, we really have to think about Lagrange points."
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Am vazut multe ceasuri superbe pe www.topceas.roAm vazut multe ceasuri superbe pe www.topceas.roAm vazut multe ceasuri superbe pe www.topceas.roBitDefender ProblemBitDefender 2010 ProblemBitDefender 2010
