In the study, the team used functional magnetic resonance imaging (fMRI) to record people’s brain activity while they tried to solve visual brain teasers. Example of the hidden picture puzzles in the black/white images on the left; corresponding real-world picture on the right. The team used these kinds of hidden picture puzzles as small-scale proxies for beginner eureka moments in the real world. “During these moments of insight, the brain reorganizes how it sees the image,” said Becker. This particular study followed brain activity at two specific moments in time: before and after a eureka moment.