Why do I open my eyes at night and babble/talk to people who are in the room?

Sleep disorder. Your symptoms are more indicative of a sleep disorder akin to what is commonly referred to as "sleep walking" only you are not "walking." i would suggest that you see a sleep disorder specialist and have a sleep study performed to see during what time of the evening and what portion of your sleep cycle that this occurs. He can then make recommendations as to possible treatment.