The race to link our brains to computers is heating up

Brain implants have long been elements of science fiction, but a steady trickle of medical trials shows their potential.

Brain implants have long been trapped in the realm of science fiction, but a steady trickle of medical trials suggests the tiny devices could play a big part in humanity's future.

Billions of dollars are flowing into a clutch of specialist companies hunting for treatments for some of the most debilitating ailments.

And pioneering studies have already yielded results.

In May, a Dutchman paralysed in a motorcycle accident regained the ability to walk thanks to implants that restored communication between his brain and spinal cord.

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That experiment was one of several eye-catching trials that have helped spark a huge buzz around the industry.

In the decade to 2020, investors poured more than $30 billion into neurotechnology more widely, according to UNESCO. The money has continued to flood in thanks, in part, to rapid improvements in artificial intelligence (AI), used by researchers to interpret the data from the implants.