I guess I should be added to this list. Until reading Rosemary's letter I couldn't remember ever having any head trauma. However, I had forgotten about horseback riding. I was about 17 when I, too, was thrown from a horse and suffered a concussion. It was not too serious and I seemed to recover quickly, being out for only about 20 minutes. It is the only time I have ever been knocked out. don't forget how to laugh Marling [log in to unmask] or [log in to unmask]