
Neuralink has been cleared to begin the first in-human trials of its brain implants and the surgical robot used to install them.
Neuralink aims to use its brain-computer interface (BCI) technology to restore movement in people with quadriplegia, meaning complete or partial paralysis of the arms, legs and trunk. Musk has also said that the brain implants could be used to restore sight in blind people.
Neurons, or nerve cells, communicate via electrical signals to coordinate our thoughts, feelings and behavior. Neuralink's implants, which have only been tested in animals, would theoretically work by interpreting these electrical signals and transmitting the decoded information to a computer via Bluetooth. In the case of helping to restore movement, for example, the computer would then analyze the incoming information and respond by sending signals back to the body, stimulating nerves and muscles to control movement.
The implant is inserted into a small hole in the skull created by a surgery-performing robot and the implant's electrodes are then embedded just a few millimeters into the cortex, the brain's outer layer. The procedure can be done in 30 minutes, without general anesthesia, Musk has claimed — although again, this has never been attempted in humans.
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