In this picture it shows you corneal notes about science.IN my corneal notes it talks about concussion.How you can get them and what effects that brain when it gets hit. I also talk about how the sensures work.Doing a lot of research a lot of pro football players when they get hit they act like it did not hurt but most of the time it did but they could go in a concussion. Doing a lot of corneal notes on concussions .This the true best one .