The Revelations of the Unconscious in the Life of the Soul from the Spiritual-scientific Point of View

But this is the essence of hallucination: logic is silent, the hallucinating person combines the matter with the waking day life and is not able, by succumbing to the hallucination, to place what occurs in the hallucination in the right way into the course of the waking day life. We speak of another form of somnambulism when a person is able not only to have hallucinations and visions arising from within himself, but when he changes his sensory life in a certain way so that things become perceptible to him through this sensory life, by analogy with this sensory life, that would otherwise not be perceptible.