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Medicine

Firing a Laser Into Your Brain Could Help Beat a Drug Addiction 156

Posted by samzenpus
from the you-re-arrange-me-till-I'm-sane dept.
An anonymous reader writes "The prelimbic region of the prefrontal cortex in the human brain is thought to play a key role in drug addiction, and researchers at the National Institute on Drug Abuse wanted to see if manipulating cells there had a positive or negative impact on that addiction. They got some rats addicted to cocaine but not before loading them up with light sensitive proteins called rhodopsins that were placed in their prefrontal cortex, attaching to the neurons there. By shining a tuned laser light on to the prefrontal cortex, it was possible to activate and deactivate the cells. By turning them on with the laser, the addictive behavior of the rats was removed. Turning them off, even in non-addicted rats, saw the addictive behavior return or introduced."
Science

Tiny Tentacled Microorganisms Named After Cthulu 54

Posted by samzenpus
from the on-his-slide-dead-cthulhu-waits-dreaming dept.
First time accepted submitter mebates writes "Two newly discovered protists, found in the guts of termites, were named after monstrous cosmic entities featured in Lovecraft's Cthulhu Mythos as an ode to the sometimes strange and fascinating world of the microbe. From the article: 'The single-cell protists, Cthulhu macrofasciculumque and Cthylla microfasciculumque, help termites digest wood. The researchers decided to name them after monstrous cosmic entities featured in Lovecraft's Cthulhu Mythos as an ode to the sometimes strange and fascinating world of the microbe. 'When we first saw them under the microscope they had this unique motion, it looked almost like an octopus swimming,' says UBC researcher Erick James, lead author of the paper describing the new protists, published in the online journal PLoS ONE.'"
Medicine

Pinhead-Sized Implant Could Replace Hearing Aids 69

Posted by samzenpus
from the can-you-hear-me-now? dept.
An anonymous reader writes "Depending on the level of hearing impairment, conventional aids may not be good enough and a hearing implant is the only option. Until now the required surgery to fit them has taken several hours. However, that is about to change. A new implant that can be fitted with outpatient surgery has been developed consisting of a 1.2mm electro-acoustic transducer, which is positioned at the so-called 'round window,' which is where the middle and inner ear connect. It then produces amplified mechanical vibrations that stimulate the auditory nerve. Even though the transducer is tiny, it can reach volumes of up to 120 decibels."
Math

How That 'Extra .9%' Could Ward Off a Zombie Apocalypse 204

Posted by samzenpus
from the protect-ya-neck dept.
netbuzz writes "The questioner on Quora asks: 'When is the difference between 99% accuracy and 99.9% accuracy very important?' And the most popular answer provided cites an example familiar to all of you: service level agreements. However, the most entertaining reply comes from a computer science and mathematics student at the University of Texas, Alex Suchman. Here's his answer: 'When it can stop a Zombie Apocalypse.'"

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