Device that can literally read your mind invented by scientists
Device that can literally read your mind invented by
scientists
An 'easily operated' machine linked to a smartphone could
be ready within five years
Ian Johnston Science Correspondent April 18, 2017
The new technology may enable handicapped people, who
have lost the ability to speak, to communicate again
A device that can read people’s minds by detecting their
brainwaves has been developed in a breakthrough that could eventually enable
people with “locked-in syndrome” to communicate.
The system was only partially effective with a 90 per
cent success rate when trying to recognise numbers from zero to nine and a 61
per cent rate for single syllables in Japanese, the researchers said.
But, nonetheless, a statement about the research issued
by the Toyohashi University of Technology in Japan said it showed that an
effective device to read people’s thoughts and relay them to others was
possible in the “near future”.
They even suggested an “easily operated” device with a
smartphone app could be ready in just five years.
An electroencephalogram (EEG) was used to monitor
people’s brain waves while they spoke.
The brain waves were then matched to the syllables and
numbers using “machine learning”, a process used to develop artificial intelligence.
The statement said the researchers had “developed a
technology that can recognise the numbers zero to nine with 90 per cent
accuracy using brain waves, or electroencephalogram (EEG), while uttering the
numbers”.
“At the same time, 61 per cent accuracy in 18 Japanese
monosyllable recognition was achieved, outperforming performance in previous
research (humans have sufficient intelligibility of sentences with an 80 per
cent monosyllable recognition rate).”
The researchers said other attempts to use brain waves to
understand people’s thoughts had struggled to understand what was being “said”.
“Up until now, speech-decoding from EEG signals has had
difficulty in collecting enough data to allow the use of powerful algorithms
based on ‘deep learning’ or other types of machine learning,” the statement
said.
“The research group has developed a different
research-framework that can achieve high performance with a small training
data-set.”
They now plan to develop a “brain-computer interface”
that can recognise words that are merely thought and not spoken.
“This technology may enable handicapped people, who have
lost the ability of voice-communication, to obtain the ability once again,” the
statement said.
“It is also expected that the technology would give a
healthy person the most natural interface without any limitations as well.
“Furthermore, the research group plans to develop a
device that can be easily operated with fewer electrodes and connected to
smartphones within the next five years.”
The statement was released ahead of a conference later
this year where the research will be presented in more detail.
A separate study published earlier this year found that
brain activity continued for about 10 minutes after a person was declared
clinically dead.
Similar brain waves as found during sleep were reported
during this period.
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