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Scientists managed to extract and decode a song from a brain recording with the help of artificial intelligence, electrodes and brain waves. 'Another Brick in the Wall' by Pink Floyd was the song chosen for the first experiment of its kind. The results obtained encouraged the team of researchers to continue developing the technique.
Musical stimuli cause the brain to light up when studied with electro Phone Number List encephalograms. Research from the University of Berkeley, California, demonstrated that the process can be reversed so that, through the reading of data obtained by electrodes, a replica of a sound or song processed in the mind is generated.
To accomplish the feat, the researchers took brain recordings from 29 test subjects with 2,268 electrodes connected in total. The study members were made to listen to 'Another Brick in the Wall' while three regions of the brain were carefully studied: the superior temporal gyrus, the sensory motor cortex and the inferior frontal gyrus.
First, the scientists located where the records of Another Brick in the Wall were broadcast.
First, scientists located where the records for Another Brick in the Wall were broadcast . (Photo: PLOS)
The scientists' goal was to identify which brain patterns corresponded to musical stimuli such as pitch, harmony and rhythm. To achieve this, they created a machine learning model that sought the correlation and coincidence of brain activity while listening to music. Its artificial intelligence (AI) identified where the music readings were in everything recorded. This information was isolated as if it were a musical memory unit.
The next thing they did was transform the most characteristic part of the Pink Floyd song into a spectrogram representation . In this way they converted the piece of music into wave information that an AI can identify and translate. Finally, with the trained recognition software , the scientists reconstructed the brain recordings into identifiable digital sounds.
The result was not exact. Analysis of the reconstruction revealed that it was only 43% similar to the spectrographic signature of 'Another Brick in the Wall'. However, the audio track obtained is essentially similar enough. If one listens to the tone, one can distinguish the song as if it were playing underwater. For the first experiment of its kind, it didn't go badly at all, the team accepted. With enough research, extracting sounds from a brain will become much more accurate.
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