What Happens In The Hypnogogic State?

What is the hypnogogic state and how is it related to inner visions?

According to many psychologists, the visions are "hallucinations" produced in the half-awake, half-asleep state. To William Buhlman, however, they represent one of many "state of consciousness", a state of awareness that should not be put into a box and labeled. In essence, he supports the notion that all inner experience should be acknowledged and recognized as one aspect, of a huge, infinite multidimensional universe of expansion and growth.