Scientists implanted infrared sensors into the brains of several rats, which allowed them to sense infrared light through their whiskers. Researchers hope the extra ability could translate into human prosthetics that could receive signals from the brain using infrared light, through which messages travels faster than in our nerves. "The brain is not limited by the transducers that exist in our body. We can actually allow the brain to incorporate new information from the external world," said lead researcher Miguel Nicolelis, a neuroengineer from Duke University best known for his work with mind-controlled prosthetics.

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