For the first time, artificial intelligence can not only analyze human brain waves, but also make them audible again. Researchers read out words and numbers to participants and measured the activity with a brain implant in the hearing centre. This data was then sent to an AI, which compared it with the original spoken words. In this way it learns to evaluate the brain waves and reconstruct the words itself - it can actually read thoughts. Park was initially sceptical: "In the past, there were often systems that analyzed brain waves and functioned according to the principle: Remember to lift your left arm, and the brainwaves registered this way can then remotely control a wheelchair, for example. And this was then sold as mind reading. But what happened here goes one step further. You can actually reconstruct spoken language from brain waves."