A Boost in Brainpower, but at What Cost?

Neural devices could give us computer-like recall and increased cognitive speed. Rob Franklin, the director of product development at one of the top neural device makers, discusses the scientific—and societal—implications

Can you briefly describe how neural devices work?

These devices consist of electrodes that penetrate the top layers of the brain and act as an array of tiny microphones to record brain activity.

How are they used today?

The...

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