When you read this sentence to yourself, it's likely that you hear the words in your head. Now, in what amounts to technological telepathy, others are on the verge of being able to hear your inner dialogue too. By peering inside the brain, it is possible to reconstruct speech from the activity that takes place when we hear someone talking. Because this brain activity is thought to be similar whether we hear a sentence or think the same sentence, the discovery brings us a step closer to broadcasting our inner thoughts to the world without speaking. The implications are enormouspeople made mute through paralysis or locked-in syndrome could regain their voice.
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