It is released in certain parts of the brain by rewarding experiences, such as achievement, food consumption, and other pleasures of life. (blog.politics.ox.ac.uk)
Brain scans revealed that the more television a kid watched, the larger certain parts of the brain were. (sciencenews.org)
In this case, they focused on what happens in certain parts of the brain when subjects were shown a face — the face being the event. (sciencedaily.com)