Using a soldier's helmet to control his or her thoughts or
moods may seem like a bad conspiracy theory, but it could turn into reality
with the help of a transcranial pulsed ultrasound technology. Dr. J Tyler, an
Assistant Professor at Arizona State University, has been working with
transcranial pulsed ultrasound to stimulate different areas of the brain
without requiring surgery. The results could have effects both on the
battlefield and beyond it.
Deep brain
stimulation (DBS) has been used for treating a variety of brain dysfunctions
including epilepsy, Parkinson's disease, chronic pain, depression, and anxiety.
"Scientists have known for more than 80 years that ultrasound can influence
nerve activity," Dr. Tyler explains. In 1st century AD, a Roman
physician named Scribonious Largus treated patients with headaches by placing
electric torpedo fish on their forehead to relieve some of their pain.
According
to Tyler, two of the biggest obstacles are attaining high spatial resolution
and deep penetration. Currently, DBS techniques generally require surgically
implanted electrodes to obtain a high resolution and sufficient penetration to
be effective.
Thanks
to a new grant from the Defense Advanced Research Projects Agency (DARPA),
however, Tyler is working to develop applications specifically for soldiers. Stimulating
different parts of a soldier's brain could allow military personnel to increase
alertness, alleviate stress, and possibly reduce the effects of a traumatic
brain injury. So far, Tyler's team has developed working and conceptual
prototypes of ballistic helmets embedded with ultrasound transducers and
microcontroller devices.
Resources:
http://www.popsci.com/technology/article/2010-09/darpa-wants-mind-control-keep-soldiers-sharp-smart-and-safe
http://science.dodlive.mil/2010/09/01/remote-control-of-brain-activity-using-ultrasound/
http://www.physorg.com/news203310660.html
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