meh... i've had FIVE concussions to date, ranging from very mild to pretty severe. during my most mild one, i was just a bit woozy/loopy and i was starting to question if my accident (a bike crash that resulted in a helmet that cracked in two) even REALLY happened (although i could still REMEMBER it).
during my first concussion, i slipped off a bench i was standing on while wearing rollerblades and hit my head on the bench on the way down. i was in the fourth grade, had no idea what a concussion even WAS, but just knew that i could barely hear (everything was very muted), my vision was all blurry, and i was incredibly tired. so i went to sleep... which is exactly what you should NOT do (even though concussions usually make you very sleepy), because you can slip into a coma.
after my LAST concussion, i had LOC, anterograde, and retrograde amnesia, which qualifies as a grade III (the worst) concussion. i remember getting off the chairlift to do a park run through mammoth's main park (which builds HUUUGE jumps... 8-12' lips and 40-80' tables). the next thing i remember is waking up in the hospital 2 hours later being told by a nurse, "sorry... i need to check your vitals AGAIN (apparently for the FIFTH time)." i told her, "that's fine. as far as i'm concerned, we're just meeting for the first time." when my parents forced me to see a neurologist for a follow-up a month later, he looked at my old MRI's and asked why i wasn't wearing a helmet. when i told him that i WAS, he said that if i had not, then, that i would've still been in the hospital.
i've also had two more concussions thrown in there from skiing (four of my five concussions have been in mammoth... all the skiing plus the biking accident), where i had typical antero and retrograde amnesia. i forget time mostly. i have no sense of what day it is. what time of year. if i'm on vacation for some break. how old i am. what events have recently occurred. a commonality between ALL my concussions is that the details immediately surrounding the event become hazey. the worse the concussion, the hazier the accident seems. for my lightest concussion, the fall just seemed surreal and i questioned it's existence. for my WORST concussion, i have NO idea what happened for two HOURS. complete blackness... and you'll NEVER get that window of memory back. but the way i see it. why would you want to? everything else seems to come back. the antero and retrograde amnesia seem to fade completely, and i've never found myself DUMBER for it (and i'm currently in the dental school that gets the top board scores in the nation). you always worry if the damage is permanent when you are sitting there trying to quiz yourself on simple information and you realize that your brain is not doing what you ask it to (which is a SCARY feeling). but, IF my brain damage was ACTUALLY lasting, then i'm so much dumber now that i don't even REALIZE it. you'll NEVER get back the memory of your accident, so just be glad and riiide it out