Over the last few years, physicists and neuroscientists have developed an armory of tools that can sense certain kinds of thoughts, while transmitting information about them into other human brains.
Now, brain-to-brain communication has become a reality.
According to MIT's Technology Review, In 2015, Andrea Stocco and his colleagues at the University of Washington in Seattle used this equipment to connect two people via a brain-to-brain interface. The people then played a 20 questions type of game with one another. It worked successfully.
The obvious next step was to allow several people to join a conversation.
On September 29, Stocco and his colleagues announced they had accomplished this using a world-first brain-to-brain network.
The network, which they called BrainNet, allows a small group to play a collaborative Tetris-like game.
> ''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,'' they say.
Stocco and his colleagues have since created a network that allows three individuals to send and receive information directly via brain to brain.
They say the network is easily scalable and limited only by the availability of EEG and TMS devices.
Together, these devices make it possible to send and receive signals directly to and from each other's brains.
Stocco and his colleagues say:
> ''A cloud-based brain-to-brain interface server could direct information transmission between any set of devices on the brain-to-brain interface network and make it globally operable through the Internet, thereby allowing cloud-based interactions between brains on a global scale.''
It turns out humans, being social animals, can distinguish between the correct and false information using the brain-to-brain protocol alone.
Stocco's work paves the way for more complex networks. For instance, there is no reason why the network cannot be extended to the Internet, allowing participants around the world to collaborate.
> ''The pursuit of such brain-to-brain interfaces has the potential to not only open new frontiers in human communication and collaboration but also provide us with a deeper understanding of the human brain.''