Dreaming in coma?

i've never been in a coma or anything, but i had a thought the other day(well.....more like a month ago but i kept forgetting to post here)i think it'd be neat to interview someone(well not exactly interview, but just a few questions)on what happened during the coma. i mean are you out one moment and awake the next?do you dream during a coma?can you become lucid?
sorry if this has been posted before but i'm tired and am about to go to bed.

I've read stories from people that have been in a coma, its my understanding that you do dream. I dont know if they can become lucid or not but I guess morphine produces some scary experiences.

i would say its posible