1) Sleep talking 2) Sleeping 3) Somniloquy 4) Utterance 5) Vocalization 1) Somniloquy 
• (n.) The act or habit of talking in one`s sleep; somniloquy.
(som-nil´o-kwiz-әm) talking in one's sleep; it is not usually considered pathologic. Called also sleeptalking.
Som·nil'o·quism noun The act or habit of talking in one's sleep; somniloquy. Coleridge. 
somniloquism, somniloquy The act or habit of speaking during sleep; talking while sleeping.