Saturday morning I took the boy, daughter and nephew to ride on a local MX track 20 mi. north of Houston. I remember pulling up to the gate and paying the entry fee, getting the wrist stamp. The next thing I remember is regaining awareness on the exam table at Conroe Regional Hospital greeted by my 2 sisters and a friend. Wow !! what happened. The kids say, we pulled in, unloaded the bikes, hit the practice track and in the first lap, I hit the whoopties and ate it. By the evidence, I landed on my left shoulder and left side of my and head & somehow banged up left middle fingers. The Doctor, who I don't remember said I sustained a mild concussion and that temporary memory loss was normal. Daaaamn!! Thats scarry !! There is a five hour period of my life that involves riding w/ the kids that I have zero (o) memory of. A guy on a quad helped me up, got started and finished the track back to the truck. Parked the scoot, and started wonering around babbling senselessly. The kids 12, 13 & 15 were sharp enough to reallize that Dad is acting seriously goofy called for help. The track personnell arrived and called an ambulance. The ambulance took kids & I to the hospital where I was examined and Cat Scan. Brother in law & friend picked up the bikes and everybody went home. My present knowlege of what happened is only what the kids told me. Three days after, Im OK, back to work and mostly normal but memory is still no better. I am very frustrated because I don't know how I went down. Has anyone had a concussion experience followed by temporary amnessia? Whats next ???