Narrator of a sleep-talking experiment

This is a question which has been put in various forms of speech, and has been answered in a great many ways. In the present instance, a person is supposed to be speaking in a quiet state of sleep, and is asked to become acquainted with a particular individual, so that the person spoken shall be conscious of the speaker's intention. The person is then asked to say, "I am conscious of thee." And so on, with the intention of pursuing a subject matter, the speaker is able to say, "Be quiet.