Q: Just curious. It's been bugging me because when I was little I was riding my bike and I fell. I smashed my head on the concrete and saw a bug flash. Other people also talk about seeing flashes when hitting their head. Why?
A: your brain functions on small amounts of electricty signals and when you hit your head to hard your brain hits your skull or moves to fast and for a split split second nocks the signal around and disrupts it