The document discusses a new technology that can analyze brain activity to determine what a person is seeing or imagining through the use of electroencephalography (EEG) and machine learning algorithms. Researchers were able to decode EEG signals related to different visual categories like faces, objects, and scenes and could predict with high accuracy what images a person was viewing or imagining based solely on their brain activity patterns. This new technology could have applications for helping disabled individuals communicate and also provides insights into how the brain processes and represents visual information.

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