Researchers create noninvasive interface that directly links human brains

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Researchers have created the first brain to brain interface that can link three people and allow two-way communication using only their mind.

According to a study published in Nature, BrainNet is the first brain to brain interface to link three people and allow two way communication using only their mind.

Two senders and a receiver cooperate in a Tetris-like game, using EEG and transcranial magnetic stimulation.

According to the study, each of the senders is provided with a monitor that displays the game, and two LED lights flashing at different frequencies.

The senders give a binary yes or no signal to the receiver by looking at one light or the other, which indicates whether the Tetris block should be rotated to win the game.

When one sender says yes, a transcranial stimulator informs the blindfolded receiver by stimulating the visual cortex, causing the receiver to see a spot or ring of light.

A no response did not engage the stimulator and the receiver did not visualize a light spot or ring.

The senders can check the receiver's decision and send corrections via BrainNet if they disagree.

The results showed that three people were better than one in playing the game.

When researchers flipped the responses of a sender deliberately, the receiver learned to disregard bad information, showing BrainNet can overcome interference or an unreliable player.

RUNDOWN SHOWS:
1. Premise of experiment
2. Two senders see the game and tell the receiver what to do
3. The receiver receives signals directly to the visual cortex
4. Subjects overcome deliberate interference by researchers

VOICEOVER (in English):

"According to a study published in Nature, BrainNet is the first brain to brain interface to link three people and allow two way communication using only their mind."

"Two senders and a receiver cooperate in a Tetris-like game, using EEG and transcranial magnetic stimulation."

"According to the study, each of the senders is provided with a monitor that displays the game, and two LED lights flashing at different frequencies."

"The senders give a binary yes or no signal to the receiver by looking at one light or the other, which indicates whether the Tetris block should be rotated to win the game."

"When one sender says yes, a transcranial stimulator informs the blindfolded receiver by stimulating the visual cortex, causing the receiver to see a spot or ring of light."

"A no response did not engage the stimulator and the receiver did not visualize a light spot or ring."

"The senders can check the receiver's decision and send corrections via BrainNet if they disagree."

"The results showed that three people were better than one in playing the game."

"When researchers flipped the responses of a sender deliberately, the receiver learned to disregard bad information, showing BrainNet can overcome interference or an unreliable player."

SOURCES: University of Washington, Nature, Futurity, Scientific American
https://www.washington.edu/news/2019/07/01/play-a-video-game-using-only-your-mind/
https://www.scientificamerican.com/article/scientists-demonstrate-direct-brain-to-brain-communication-in-humans/
https://www.futurity.org/brainnet-brain-to-brain-interface-game-2098002/
https://www.nature.com/articles/s41598-019-41895-7)