Neuroscientists in the US have taken an unnerving step towards reading people's minds.
A team in Texas has built an AI decoder which can take someone's brain scans and determine the gist of what they are thinking.
It's far from a perfect system - but it is prompting an ethical conversation about how far we should take this type of technology.
Research author, neuroscientist Alexander Huth talks to Jesse.
Better sleep might boost clearance of these toxins from the human brain and so reduce the risk of dementia. Photo: 123RF