University of
Washington researchers have performed what they believe is the first
noninvasive human-to-human brain interface, with researcher Rajesh Rao
able to send a brain signal via the Internet to control the hand motions
of fellow researcher Andrea Stocco. Rao wore a cap with electrodes
hooked up to an electroencephalography machine, which reads electrical
activity in the brain. On the other side of the university campus,
Stocco wore a magnetic stimulation coil over his left motor cortex,
which controls hand movement. Rao looked at a computer screen and played
a simple video game with his mind; when he was supposed to fire at a
target, he imagined moving his right hand to hit the "fire" button.
Almost instantaneously, Stocco's right index finger moved involuntarily
to hit the “fire” button.
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