Lina was playing checkers with Sam, her best friend, when all of a sudden Lina fell to the floor and started to shake all over.WHAT JUST HAPPENED?Lina might have had a seizure. Now it's up to the Brain Detectives-Lina and Sam-to join with a team of doctors, nurses, technicians and parents to find out. But first, Lina has to have an EEG...whatever that is.About 1% of all Americans are living with some form of epilepsy. One in ten Americans will have at least one seiz...