Neuralink’s three implants are part of its ongoing Prime study, which is evaluating the safety of Neuralink’s brain device in individuals with quadriplegia. In September 2024, the company announced the approval of a second study known as Convoy, which will explore extending its brain device capabilities to control an assistive robotic arm.

Since the first brain implant about a year ago, Musk said the company has upgraded the devices with more electrodes, higher bandwidth and longer battery life.

Elon Musk announced that Neuralink has implanted its third patient, marking a milestone. The company is upgrading its brain-computer interface and plans to expand trials with 20-30 more implants this year,