Hasta La Gadget!

Some would say the internet already lets us share every minute detail of our thoughts, much to our followers’ dismay. Duke University isn’t deterred by our behavior — if anything, it just took oversharing literally by connecting two rats’ minds in an experiment, first in a lab and ultimately online. Electrodes attached to the brain of a host “encoder” rat in Brazil processed the motor-oriented mental activity for a desired behavior, such as pressing a lever on cue, and converted it into a signal that was then received by a “decoder” rat as far away as Duke’s US campus. The majority of the time, the decoder rat performed the same action as the encoder. Researchers also found that rewarding the encoder alongside the decoder created a virtuous loop, as treating the first rat for a job well done focused its attention and improved the signal strength.

We’re not sure that Vulcans would endorse this kind of mind meld, though: apart from immediately depriving the decoder rat of self-control, prolonged testing led to the same rodent developing additional sympathetic reactions to the encoder. There’s also concerns that the test was too binary and didn’t reflect the complexity of the whole brain. All the same, Duke’s study is proof enough that we can export brainwaves in a meaningful way.

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Via: Discovery News

Source: Nature

Most attempts at cloaking, no matter the slice of spectrum, usually leave clues as to what’s there — even microwave cloaks can spoil the surprise through reflections. At Duke University, researchers have licked some of those past problems with the first instance of a flawless microwave cloaking scheme. By crafting a special diamond-shaped cloak where the light properties stay consistent at the corners, the school’s Nathan Landy and David Smith have successfully shielded a 3-inch wide cylinder from microwave detection without a hint that something was amiss. The gotcha, as hinted by the shape, is a two-dimensional nature that gives away the secret at less than ideal angles. Duke suggests that it still has the groundwork for something that could be vital for communications or radar — we can imagine a stealth aircraft or ship in the far-flung future that could actively mask itself from radar signals. It’s not quite the optical illusion we’re looking for, but a refined version of the Duke project might be enough for a rare practical use of cloaking when fantasies are much more common.

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Duke University creates ‘perfect’ one-directional microwave cloak, might lead to stealthier vehicles originally appeared on Engadget on Mon, 12 Nov 2012 19:09:00 EDT. Please see our terms for use of feeds.

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Those goggles you see above aren’t for stylish looks while playing dodgeball — they’re the keys to a potentially important discovery about short-term memory. Duke University‘s Institute for Brain Sciences found that subjects playing catch with goggles simulating strobe lights were noticeably better at memorizing information during tests, even a full day after playtime was over. It’s not hard to see why: with a limited amount of time to see that incoming ball, participants had to more vividly remember brief scenes to stay on top of the game. We don’t yet know if there’s any kind of long-term boost, so don’t get your hopes up that strobe lights are the shortcuts to permanent photographic memory. Still, the findings suggest that frequent nightclubbers might be on to something… or, at least, have a better idea of where they left their keys the morning after.

[Image credit: Les Todd, Duke Institute for Brain Sciences]

Filed under: Wearables, Science

Strobe lighting goggles shown to improve short-term memory, all-night ravers feel validated originally appeared on Engadget on Wed, 25 Jul 2012 19:07:00 EDT. Please see our terms for use of feeds.

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