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No Implants Needed: Movement-Generating Brain Waves Detected and Decoded Outside the Head

 

 
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From: ScientificAmerican.com New research holds promise for a noninvasive brain-computer interface that allows mental control over computers and prosthetics. Our bodies are wired to move, and damaged wiring is often impossible to repair. Strokes and spinal cord injuries can quickly disconnect parts of the brain that initiate movement with the nerves and muscles that execute […]

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Posted December 28, 2010 by Bernard J. Baars

 
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From: ScientificAmerican.com

New research holds promise for a noninvasive brain-computer interface that allows mental control over computers and prosthetics.

Our bodies are wired to move, and damaged wiring is often impossible to repair. Strokes and spinal cord injuries can quickly disconnect parts of the brain that initiate movement with the nerves and muscles that execute it, and neurodegenerative disorders such as Parkinson’s disease and amyotrophic lateral sclerosis (ALS) draw the process out to the same effect. Scientists have been looking for a way to bypass damaged nerves by directly connecting the brain to an assistive device—like a robotic limb—through brain-computer interface (BCI) technology. Now, researchers have demonstrated the ability to nonintrusively record neural signals outside the skull and decode them into information that could be used to move a prosthetic.

Past efforts at a BCI to animate an artificial limb involved electrodes inserted directly into the brain. The surgery required to implant the probes and the possibility that implants might not stay in place made this approach risky.

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Bernard J. Baars

 


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