http://www.voanews5aitmne6gs2btokcacixclgfl43cv27sirgbauyyjylwpdtqd.onion/a/scientists-use-brain-scans-and-ai-to-decode-thoughts/7074038.html
This allowed the researchers to map out how words, phrases and meanings prompted responses in the regions of the brain known to process language. They fed this data into a neural network language model that uses GPT-1, the predecessor of the AI technology later deployed in the hugely popular ChatGPT. The model was trained to predict how each person's brain would respond to perceived speech, then narrow down the options until it found the closest response.