Researchers Can Reproduce Heard Sounds by Monitoring Brain Activity:
To listen in on the brain’s activity, the researchers placed up to 256 electrodes on the temporal lobe, the home of auditory processing in the brain. Words were then read out to the subjects, and the resultant electrical activity from the temporal lobe was recorded. The brain breaks down sounds into frequency bands (blocks of 10 hertz, say), and specific parts of the temporal lobe (cortical sites) are then tasked with processing that sound. By recording which of these cortical sites are active when words are heard, the scientists could then reconstruct the sounds using computer software.
(via Neuroscientists create computer program that can decode your thoughts | ExtremeTech)
