Joanna Kern Cooley is fascinated by the human brain. For years she put that fascination on the back burner as she raised her family, and it wasn’t until Cooley turned 30 that she decided to apply to college to become a doctor. Now, as she works toward completing her bachelor’s degree in neuroscience at Saginaw Valley State University in Saginaw, Mich., she is well on her way to achieving that goal.