The panoply of phenomena that can be witnessed near sleep and while dreaming are endless. Here in lies one method for near sleep exploration.
While falling asleep, with your eyes closed, focus on the ambient noise being heard. Without moving, shift your attention to your left ear and then to your right. Try to “hear” with or focus your attention on only one ear at a time. Do this rhythmically, alternating between each until there is clockwork sensation to it all. I had found that my eyes follow my attention(a visual bias for attention), this can disappear over time, but should not be resisted. As this is done, the most remarkable splitting can be achieved with great regularity. As the focus—the attention—is left preoccupied, awareness remains and the quality of mind is greatly altered. Other theatres of consciousness come into “view,” now that that thing that flits about when one has had too much coffee has been put aside. The sense data of the optic nerve can still be seen, the colors or shot noise one sees with eyes closed in the dark. The Cartesian theatre is also in sight( with coronal orientation, a plane parallel to the back of the eyes), though not so fixating and all consuming. Thought and its error neatly lie there. There is a theatre that occasionally feels like it has a distinctly space like character that can be sensed on the sides of the brain(oriented parasagittally and almost certainly a bias produced by personal knowledge of functioning attributed to the parietal region). There is another view sensed dorsally(oriented transversely) on the surface of the skull and another just above (though disconnected) and parallel to the one just below it. These two possess a character that is very unlike daily life and one can sense a kind of perfect understanding of relation, however that relation might be structured. It is worth mentioning that the shapes of these theatres are not planar or even two dimensional. Further descriptions on the character of these theatres are left as exercises for the reader.
While moving between these spaces(perhaps being too analytical, trying to organize and categorize the character of these regions), one might begin to hear a tone, the kind of ring heard before an emergency broadcast—an announcement to please standby while reality falls away. This can be followed by a buzz, the kind of hum coming off of a Tibetan singing bowl. Where you go from there is less organized. Variations abound while experimenting with this technique. The introduction of warmness, or degrees of paralysis at different stages can apply, but ordering is difficult when order is beginning to fall away. This buzz is reported by people who take certain psychedelics and is one of more intriguing parallels between dreaming and psychotropics. The “else-wheres” one inevitably ends up describing are a subject for later discussion.