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 Posted: Tue Oct 06, 2009 11:21 pm |
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http://www.sciencedaily.com/releases/2009/10/091006102637.htm
Brain-Computer Interface Allows Person-to-person Communication Through Power
Of Thought
ScienceDaily (Oct. 6, 2009) - New research from the University of
Southampton has demonstrated that it is possible for communication from
person to person through the power of thought -- with the help of
electrodes, a computer and Internet connection.
Brain-Computer Interfacing (BCI) can be used for capturing brain signals and
translating them into commands that allow humans to control (just by
thinking) devices such as computers, robots, rehabilitation technology and
virtual reality environments.
This experiment goes a step further and was conducted by Dr Christopher
James from the University's Institute of Sound and Vibration Research. The
aim was to expand the current limits of this technology and show that
brain-to-brain (B2B) communication is possible.
Dr James comments: "Whilst BCI is no longer a new thing and person to person
communication via the nervous system was shown previously in work by
Professor Kevin Warwick from the University of Reading, here we show, for
the first time, true brain to brain interfacing. We have yet to grasp the
full implications of this but there are various scenarios where B2B could be
of benefit such as helping people with severe debilitating muscle wasting
diseases, or with the so-called 'locked-in' syndrome, to communicate and it
also has applications for gaming."
His experiment had one person using BCI to transmit thoughts, translated as
a series of binary digits, over the internet to another person whose
computer receives the digits and transmits them to the second user's brain
through flashing an LED lamp.
While attached to an EEG amplifier, the first person would generate and
transmit a series of binary digits, imagining moving their left arm for zero
and their right arm for one. The second person was also attached to an EEG
amplifier and their PC would pick up the stream of binary digits and flash
an LED lamp at two different frequencies, one for zero and the other one for
one. The pattern of the flashing LEDs is too subtle to be picked by the
second person, but it is picked up by electrodes measuring the visual cortex
of the recipient.
The encoded information is then extracted from the brain activity of the
second user and the PC can decipher whether a zero or a one was transmitted.
This shows true brain-to-brain activity.
You can watch Dr James' BCI experiment at:
http://www.youtube.com/watch?v=93p7oDkA5WA&feature=email
Dr James is part of the University of Southampton's Brain-Computer
Interfacing Research Programme, which brings together biomedical engineering
and the clinical sciences and provides a cohesive scientific basis for
rehabilitation research and management. Projects are driven by clinical
problems, using cutting-edge signal processing research to produce an
investigative tool for advancing knowledge of neurophysiological mechanisms,
as well as providing a practical therapeutic system to be used outside a
specialised BCI laboratory.
Dr James also appeared on BBC2's 'James May's Big Ideas' last year, talking
about thought controlled wheelchairs and introducing the field of BCI. You
can view the segment here:
http://www.youtube.com/watch?v=Uyrd0uOuyms&feature=related
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