Animal brains connected up to make mind-melded computer

Two heads are better than one, and three monkey brains can control an avatar better than any single monkey. For the first time, a team has networked the brains of multiple animals to form a living computer that can perform tasks and solve problems.

 

If human brains could be similarly connected, it might give us superhuman problem-solving abilities, and allow us to communicate abstract thoughts and experiences. "It is really exciting," says Iyad Rahwan at the Masdar Institute in Dubai, UAE, who was not involved in the work. "It will change the way humans cooperate."

The work, published today, is an advance on standard brain-machine interfaces – devices that have enabled people and animals to control machines and prosthetic limbs by thought alone. These tend to work by converting the brain's electrical activity into signals that a computer can interpret.

Miguel Nicolelis at Duke University Medical Center in Durham, North Carolina, and his colleagues wanted to extend the idea by incorporating multiple brains at once. The team connected the brains of three monkeys to a computer that controlled an animated screen image representing a robotic arm, placing electrodes into brain areas involved in movement.

By synchronising their thoughts, the monkeys were able to move the arm to reach a target – at which point the team rewarded them with with juice.