When you are put to sleep with anesthetic do you dream?

Yes, or at least, I do. I had gas at the dentist when I was a child, perhaps five times, and I dreamed every time. The dreams I had were different in style to normal dreams, they were more vivid and I remembered them more easily. Once I decided beforehand to try to control my dream, and I was successful (this is known as "lucid dreaming"). I have had much less success during "normal" dreams. Curiously, under general anaesthetic I lose track of time; when I awake I am not aware of how much time has passed (it seems like less than a minute). Normally I can tell the time to within half an hour when I wake up.