The Psychoanalytic Literature and Somniloquy
To the best of my knowledge, there is neither a general paper nor section of a book written from the psychoanalytic perspective that deals with sleeptalking. Like so much else in this area, small comments and references are dispersed in almost piecemeal fashion throughout. By contrast, there is a somewhat richer literature on speech in nocturnal dreams, and a review of this area seems useful by way of introduction.
We begin by presenting Freud's statements and beliefs pertaining to this topic.
In order for linguistic events to be classified by Freud as a dream speech, they must possess something of the sensory character of speech, with linguisticmotoric and acoustical accompaniments, and must be described by the dreamer as "speeches." Freud drew a careful distinction between "actual" speech occurring as part and parcel of dreamed events as opposed to speeches devoid of acoustic or motor accompaniments -- those speeches which are not vividly felt or heard as spoken "aloud" in the dream experience. The latter might include dreamed implicit speech or mental references to speech,