It allows them to view the organ at different points in a person’s life cycle to determine how much it grows, where it losses mass, etc. They also use functional MRI to record the brain’s actions when the subject is being asked questions, watching a movie, viewing pictures, and more. The prefrontal cortex does not stop developing until the approximate age of twenty-two-years-old. After this point is reached, the brain begins losing grey matter that is weak and no longer capable of keeping up with the brain’s ability to function properly. Then, teenagers are stuck between their brains trying to finish with developing. They have different parts of their brains that mature faster than the others. This leaves us with “the middle ground years” as my mom calls them or use to call them until my sister and I finished growing up, she has a very different name for them now. Nonetheless, when the brain’s different lobes and parts have all matured and are working together, they bring about the somewhat rational adults we see today. Letting us have the ability to look back at our teenage years and see how we sensitive to some issues, daredevils when the right people were around, mouthy, and the things we were completely into. Thus, letting us have moments of “Did I really do that? Did I Really like that? What was I thinking?” as the memories come back to us in flashback due to a song, movie, phrase,