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From the November 2008 Scientific American Magazine | 19 comments

Jacking into the Brain--Is the Brain the Ultimate Computer Interface? ( Preview )

How far can science advance brain-machine interface technology? Will we one day pipe the latest blog entry or NASCAR highlights directly into the human brain as if the organ were an outsize flash drive?

By Gary Stix   

 


Bill Diodato

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Key Concepts

  • Futurists and science-fiction writers speculate about a time when brain activity will merge with computers.
  • Technology now exists that uses brain signals to control a cursor or prosthetic arm. How much further development of brain-machine interfaces might progress is still an imponderable.
  • It is at least possible to conceive of inputting text and other high-level information into an area of the brain that helps to form new memories. But the technical hurdles to achieving this task probably require fundamental advances in understanding the way the brain functions.

The cyberpunk science fiction that emerged in the 1980s routinely paraded “neural implants” for hooking a computing device directly to the brain: “I had hundreds of megabytes stashed in my head,” proclaimed the protagonist of “Johnny Mnemonic,” a William Gibson story that later became a wholly forgettable movie starring Keanu Reeves.

The genius of the then emergent genre (back in the days when a megabyte could still wow) was its juxtaposition of low-life retro culture with technology that seemed only barely beyond the capabilities of the deftest biomedical engineer. Although the implants could not have been replicated at the Massachusetts Institute of Technology or the California Institute of Technology, the best cyberpunk authors gave the impression that these inventions might yet materialize one day, perhaps even in the reader’s own lifetime.

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