Jaimie Henderson became interested in people who lose the ability to communicate from a very young age. In a video call presentation of his latest research in this field, the Stanford University (USA) researcher now remembers that, when he was five years old, his father suffered a very serious traffic accident. “He kept telling jokes, and I laughed at his jokes, but I didn't understand him because his ability to speak was so damaged,” she said. This led him to study how neurons encode movement and speech, and then look for a way to recover them in people with neurological damage. Henderson is the leader of one of the two jobs that today publishes Nature and that give hope of communicating again to many people like his father.