The same group of researchers has previously been able to link up two brains successfully, getting participants to play a game of 20 questions against each other. Again, phantom phosphene flashes were used to transmit information, in this case “yes” or “no”.
For now it’s very slow and not fully reliable, and this work has yet to be peer-reviewed by the neuroscience community, but it’s a glimpse at some fanciful ways we could be getting our thoughts across to each other in the future – maybe even pooling mental resources to try and tackle major problems.
“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,” writes the team.
For now, the research available online on the arXiv pre-print server.