I completely slept through mine but it was not general anesthesia. Whatever it was, I had no memory between lying down on my side on the table and then waking up when it was all over. I only wish I could do the same for all dental procedures...even cleanings!
My DH was awake for his two colonoscopies and was able to watch, though he was groggy. We went to different docs, so it's entirely possible they used different levels or types of anesthesia, or people just react differently to basically the same "cocktail".
I've had general anesthesia three times for different surgeries and have no problems with it, but it certainly isn't necessary nor typically used for colonoscopies.
Emily
2011 Jamis Dakar XC "Toto" - Selle Italia Ldy Gel Flow
2007 Trek Pilot 5.0 WSD "Gloria" - Selle Italia Diva Gel Flow
2004 Bike Friday Petite Pocket Crusoe - Selle Italia Diva Gel Flow