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Jul 6 08 9:07 PM
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Man of TomorrowWizard of ScienceBy night known as:Captain Future
The device - dubbed MEDUSA (Mob Excess Deterrent Using Silent Audio) - exploits the microwave audio effect, in which short microwave pulses rapidly heat
tissue, causing a shockwave inside the skull that can be detected by the ears. A series of pulses can be transmitted to produce recognisable sounds. The
device is aimed for military or crowd-control applications, but may have other uses.
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Known as synthetic telepathy, the technology is based on reading electrical activity in the brain using an electroencephalograph, or EEG. Similar technology
is being marketed as a way to control video games by thought. "I think that this will eventually become just another way of communicating," said
Mike D'Zmura, from the University of California, Irvine and the lead scientist on the project.
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This Domain (kozumo.com) Has Been Disabled
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The scientists were able to reconstruct various images viewed by a person by analyzing changes in their cerebral blood flow. Using a functional magnetic
resonance imaging (fMRI) machine, the researchers first mapped the blood flow changes that occurred in the cerebral visual cortex as subjects viewed various
images held in front of their eyes. Subjects were shown 400 random 10 x 10 pixel black-and-white images for a period of 12 seconds each. While the fMRI
machine monitored the changes in brain activity, a computer crunched the data and learned to associate the various changes in brain activity with the
different image designs. Then, when the test subjects were shown a completely new set of images, such as the letters N-E-U-R-O-N, the system was able to
reconstruct and display what the test subjects were viewing based solely on their brain activity.
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With 200,000 neurons linked up by 50 million synaptic connections, the chip is able to mimic the brain's ability to learn more closely than any other
machine. Although the chip has a fraction of the number of neurons or connections found in a brain, its design allows it to be scaled up, says Karlheinz
Meier, a physicist at Heidelberg University.
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May 9 09 12:48 AM
I suppose it's possible I'm still seeing this out of context - and that the speaker is actually pointing out how scary and strange this stuff gets.
But I don't think so.
My favorite bit may be the reaction shot of one of the businessmen, who seems to be actually considering whether he is now fully and irrevocably engaged with
the dark side of the force.
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