Remote
Control Humans: In an
announcement that’s going to be a boon to the tin-foil haberdashery business,
scientists at the University of Washington (UW) have successfully built a
non-invasive system to remotely control the actions of humans.
On August
12, Professor Rajesh Rao, wearing an black and green EEG skullcap set to
monitor the left motor cortex of the brain, which coordinates hand movement,
mentally moved a finger to fire a cannon in a video game. He made no physical
movement; he just thought about the action.
The results
were recorded and pinged across campus to the UW’s Institute for Learning and
Brain Sciences, where fellow researcher Andrea Stocco was wearing a rather
fetching purple swimming cap containing a transcranial magnetic stimulation
coil. Stocco wore earplugs to reduce outside stimuli and his hand rested on top
of a standard keyboard.
The
magnetic coil, operating at 69 per cent power, induced current in a spot on his
brain that controls the wrist and fingers and caused a finger on Stucco’s right
hand to twitch and hit the keyboard, a movement the scientist described as like
«a nervous tic».
«Brain-computer
interface is something people have been talking about for a long, long time,»
said Professor Chantel Prat, Stocco’s wife and research partner, who helped
conduct the experiment. «We plugged a brain into the most complex computer
anyone has ever studied, and that is another brain.»
Four test
sessions were carried out, with five to seven transmissions per session.
Although the first try was abbreviated due to network connectivity issues, the
team got the brain-to-brain control signal to work in over 90 per cent of the
experiments.
That said,
the team was keen to stress that the technology couldn’t be used to force
action against a person’s will. While Stocco made the obligatory ‘Vulcan mind
meld» joke, Prat stressed that this was being managed by state-of-the-art
equipment under strict laboratory conditions.
«I think
some people will be unnerved by this because they will overestimate the
technology,» she said. «There’s no possible way the technology that we have
could be used on a person unknowingly or without their willing participation.»
Mind-to-computer
interfaces are nothing new, and UW has already had some success in implanting
electronics directly into the brain to control epileptic seizures. But by
transmitting brain-to-brain, the team thinks they can open up a whole new field
of personal networking.
«It was
both exciting and eerie to watch an imagined action from my brain get
translated into actual action by another brain,» Rao said. «This was basically
a one-way flow of information from my brain to his. The next step is having a
more equitable two-way conversation directly between the two brains.»
By Iain
Thomson terra papers
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