The following submission statement was provided by /u/fungussa:

SS: Scientists can now 'decode' people's thoughts without even touching their heads. By its nature, this scanning method cannot capture real-time brain activity, since the electrical signals released by brain cells move much more quickly than blood moves through the brain. In additional tests, the algorithm could fairly accurately explain the plot of a silent movie that the participants watched in the scanner.

Please reply to OP's comment here: https://old.reddit.com/r/Futurology/comments/ycwpmj/new_technique_for_decoding_peoples_thoughts_can/itosh8z/