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Cell Phones

Researchers Develop Braille for Vibrating Touchscreen Devices


In braille, a character is made up of six dots laid out on a two by three matrix -- not something that can really be conveyed using capacitive touchscreen technology. Working with a Nokia 770 Internet Tablet, researchers in Finland have developed a method for piezoelectric touchscreen devices that uses a single pulse of intense vibration to convey a raised dot, and a longer vibration made up of several weaker pulses to represent a missing dot -- spelling out letters that can be easily read by touch. It took a while for volunteers to get used to this method, but once they had they were able to read a character in as little as 1.25 seconds. Now that they have letters down, the team is moving on to words and sentences -- with an eye towards developing text-to-braille software sometime in the future.

Video Games

Video Games Improve Your Eyesight, Mothers in State of Disbelief

It turns out that, contrary to what we heard from our mothers, video gaming can actually improve vision. A recent study at the University of Rochester found that test subjects who played video games had a markedly superior ability to perceive fine contrast differences, a large factor in how well we see.

Study leader Daphne Bavelier told LiveScience that, usually, the only way to improve contrast sensitivity was to get glasses or eye surgery. Apparently, though, test subjects who played 50 hours of video games over the eight-week test period gained a 58-percent increase in contrast sensitivity. What's more, players who played action-packed shooting games (like 'Unreal Tournament' and 'Call of Duty 2') saw a greater increase in acuity than those who played games requiring less hand-eye coordination (like 'The Sims 2').

Apparently, the action games train our brains to process visual information more efficiently -- as if we needed another excuse for "pwning noobs!" [From LiveScience, Via: Slashdot]

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TV, Televisions

Are You Too Short-Sighted to Enjoy HDTV?


If Vision Express was looking for some attention, it just got it. A recent study by the optician chain found that 60-percent of Britons had avoided an eye test over the past year, with that number rising to 79-percent in Scotland.

Phillip Hyde, dispensing optician and head of professional services at the firm, was quoted as saying that "even a marginally short-sighted person sitting on a sofa watching an HD broadcast may not see the full benefits in enhanced image quality." As if that wasn't comical enough, he continued by saying: "If you're investing in HDTV, you ought to have your eyes checked to make sure you get the full benefit."

You heard it here first, folks -- factor in the cost of an eye exam before buying your next HDTV, or you'll regret it. Forever. [Image courtesy of Lenslinger]

Glaucoma-Monitoring Contact Lenses Crafted at UC Davis

Far from the first circuit-laden contact lens we've laid eyes on (ahem), researchers at UC Davis have more than bragging rights in mind with their "smart" contacts. The devices are infused with a "pattern of conductive silver wires, which could be used to measure pressure inside the eye."

The material, dubbed polydimethylsiloxane (PDMS), would boast antimicrobial properties and could enable scientists to better study glaucoma. How so? By sending pressure data to computers sans wires. Better still, the contacts also include the ability to automatically dispense medication into the eye, making this beneficial in more ways than one.

The creators are expected to apply for approval to begin testing the lenses in humans here shortly, and barring any unforeseen (sorry, totally unintentional there) setbacks, we would hope these could be put to use within the next few years.

[Via medGadget]

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