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Telepathy machine reconstructs speech from brainwaves

Pasley’s team were able to correlate many of these aspects of speech to the neural activity happening at the same time. They then trained an algorithm to interpret the neural activity and create a spectrogram from it (see diagram). This is a graphical representation of sound that plots how much of what frequency is occurring over a period of time. They tested the algorithm by comparing spectrograms reconstructed solely from neural activity with a spectrogram created from the original sound.