Prosthetic Speech Implant Turns Your Thoughts to Words

People who have lost their ability to speak still have active speech centers in their brain. Seeking to tap into the neurons firing in those centers, researchers at Boston University implanted a series of electrodes into the brain of Erik Ramsey, a man who has been in a locked-in state since a brain stem injury when he was 16. The researchers have had to come up with complex software to decode the raw signals into speech — in other words, to translate Ramsey's thoughts about speaking into actual sounds.

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