"Progress is good, and the patient seems to have made a full recovery, with no ill effects that we are aware of. Patient is able to move a mouse around the screen by just thinking," Musk said in a Spaces event on social media platform X.

The firm successfully implanted a chip on its first human patient, after receiving approval for human trial recruitment in September of 2023.

The study uses a robot to surgically place a brain-computer interface implant in a region of the brain that controls the intention to move, Neuralink has said, adding that the initial goal is to enable people to control a computer cursor or keyboard using their thoughts.

In a nine-minute livestream on X, formerly Twitter, Noland Arbaugh uses the cursor to play chess online.

Mr Arbaugh was paralysed below the shoulders after a diving accident and received the chip implant in January.

The company's goal is to connect human brains to computers to help tackle complex neurological conditions.

Mr Arbaugh also said that he had used the brain implant to play the video game Civilization VI. Neuralink gave him "the ability to do that again and played for eight hours straight", he said.

However, Mr Arbaugh said the new technology was not perfect and they "have run into some issues".

Neuralink's device, which is about the size of a one pound coin, is inserted into the skull, with microscopic wires which can read neuron activity and beam back a wireless signal to a receiving unit.

The company has also run trials in pigs and claimed that monkeys can play a basic version of the video game Pong.

Neuralink was given permission to test the chip on humans by the Food and Drug Administration (FDA) in May 2023.