A new study has come out and says 1 in 7 people suffer from this "sleep drunk" disorder.  It might happen while trying to fall asleep or while waking up.  Most episodes happen when the subject is woken suddenly.  

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In the case of Remy...he goes to bed a little earlier than his wife during the week.  She  has recorded some of the moments he's started talking to as she's getting into bed.  He has no memory of these events.