The chief executive of electric car maker Tesla Inc and rocket developer SpaceX said in August that the event would be held on Oct 31.

Co-founded by Musk in 2016, San Francisco-based Neuralink aims to implant wireless brain computer chips to help cure neurological conditions like Alzheimer’s, dementia and spinal cord injuries and fuse humankind with artificial intelligence.

Musk said in a 2019 presentation that Neuralink was aiming to receive regulatory approval for trials to implant chips into humans by the end of 2020, but the company has yet to receive such an approval or bring a product to market.

Musk approached brain chip implant developer Synchron Inc about a potential investment after he expressed frustration to Neuralink employees over their slow progress to win regulatory clearance for its devices.