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While automakers think about how to surprise buyers, neuroscientists think about a three-way brain connection to allow three people share their thoughts – and also play a Tetris-style game.
“It works through a combination of electroencephalograms (EEGs), for recording the electrical impulses that indicate brain activity, and transcranial magnetic stimulation (TMS), where neurons are stimulated using magnetic fields”, indicates www.sciencealert.com.
“We present BrainNet which, to our knowledge, is the first multi-person non-invasive direct brain-to-brain interface for collaborative problem solving,” write the researchers.
The BRAINnet Database is the largest available library of human brain health information acquired using standardized measures, so that multiple sources of data are available on the same individuals.
“The interface allows three human subjects to collaborate and solve a task using direct brain-to-brain communication.”
[Two of the three subjects are “Senders” whose brain signals are decoded using real-time EEG data analysis to extract decisions about whether to rotate a block in a Tetris-like game before it is dropped to fill a line. The Senders’ decisions are transmitted via the Internet to the brain of a third subject, the “Receiver,” who cannot see the game screen. Our results raise the possibility of future brain-to-brain interfaces that enable cooperative problem solving by humans using a “social network” of connected brains], say researchers.
In the research set up by the scientists, two “senders” were connected to EEG electrodes and asked to play a Tetris-style game involving falling blocks. They had to decide whether each block needed rotating or not.
To do this, they were asked to stare at one of two flashing LEDs at either side of the screen – one flashing at 15 Hz and the other at 17 Hz – which produced different signals in the brain that the EEG could pick up on.
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