Elon Musk's first Neuralink patient shared a post on X, formerly Twitter “just by thinking”.
Noland Arbaugh is a 29-year-old man, who received the implant back in January.
He joked on X: ''Twitter banned me because they thought I was a bot, and X and elonmusk reinstated me because I am."
"First ever post made just by thinking, using the Neuralnk Telepathy device!", Elon Musk responded to his tweet.
The company showcased a nine-minute video of Arbaugh, who is paralysed from a diving accident, moving a cursor with his mind and then this appeared.
He can also be seen playing a game of chess and turning off the laptop's music in the video.
Musk wrote in response to the video: "Long-term, it is possible to shunt the signals from the brain motor cortex past the damaged part of the spine to enable people to walk again and use their arms normally."
Another positive comment read: "This is very good news. Many lives will be changed for good."
Meanwhile, one sceptic wrote: "I've seen enough dystopian sci-fi films to know that there's a 100 percent chance this ends horribly for humankind."
For its “Prime Study” (Precise Robotically Implanted Brain-Computer Interface), Elon Musk Neuralink is currently working on its first round of clinical trials.