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6 March 2014 1:04 pm ,
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Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
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Video: Paralyzed Woman Controls Robotic Arm With Her Thoughts
17 December 2012 12:23 pm
A 53-year-old woman paralyzed from the neck down by a genetic neurodegenerative condition has learned to manipulate a robotic arm with her thoughts, researchers report today in The Lancet. In the video above, she uses the arm to remove plastic cones stacked on a base and restack them one by one on another base. Surgeons had implanted two 4x4-millimeter grids of hair-thin electrodes in her brain to capture signals from regions involved in planning hand and arm movements. A computer translated those signals into commands to move the robotic arm, which has nearly the same movement capabilities as the real thing. Earlier this year, another research team reported that two tetraplegic patients had learned to grasp and manipulate objects using a brain-machine interface (BMI), as these sophisticated prosthetics are often called. This new study improves on that work by demonstrating even more fluid and natural movements—the best yet performed by a paralyzed human patient using a BMI. It also allowed the patient, Jan Scheuermann, to fulfill a long-sought goal: feeding herself a piece of chocolate.
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