A group in Spain used an implant called the Utah array to help a blind woman write.

Neuralink has followed a cautious path in the past. It showed a video of a primate playing a video game with its brain. A person with a brain implant had played the game before.

Neuralink has developed a sophisticated type of brain implant that uses thin wires studded with electrodes. The wires are put into the brains of animals using a neural "sewing machine" robot.

Musk outlined plans for a brain implant when Neuralink was launched. He believed that the brain modem would allow humans to keep up with artificial intelligence.

Neuralink has talked about helping paralyzed people control a computer, despite the grandiose vision.

The company demonstrated its technology by implanting its electrodes in the brains of animals. That makes it possible for researchers to read movements and send them to a computer.

Guessing game

Some company fans thought that it was a sign that today's demonstration would involve an animal typing with its brain.

One possibility is that. Humans have set world records at brain typing and Krishna Shenoy is working with them. The UtahArray is an older type of implant used by Shenoy's human subjects.