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David Eagleman interview: How our brains could create whole new senses

Rocio Montoya
May 12 2021

WOULD you like to be hooked up to a device that lets you detect magnetic fields like a bird? How about sensing infrared light like a snake? Perhaps a feed of real-time stock market data into your mind is more your sort of thing. According to David Eagleman, a neuroscientist at Stanford University in California, it will soon be possible to make all this a reality.

He has already created technologies along these lines, including a wristwatch-like device called Buzz that translates sound into patterns of vibration on the skin. Interpreting those vibrations effectively gives deaf people who use it a new kind of hearing.

The inspiration for these ideas grew out of Eagleman’s study of neuroplasticity, the brain’s incredible ability to reforge itself in response to new experiences. In his latest book, Livewired: The inside story of the ever-changing brain, he examines just how the brain pulls off such wholesale changes and explores the extent to which we can harness this ability to learn new tricks.

Eagleman says neuroscientists still have a lot to learn about how the brain changes. Much of the focus has been on synapses, the connections between brain cells called neurons. But there are deeper and more mysterious ways in which the brain is changing all the time, he says, and we are guilty of overlooking them. As we learn more about the brain and begin to enhance it with new technology, we might gain some intriguing new abilities.