I've been having regular WILDS with most afternoon naps. I will slowly fade from full consciousness and perception to a trance-like lucid state. The transition is usually accompanied by vibrations and visions. The strange thing is, while I am lucid I still perceive external auditory stimuli. Voices, ambient noise, etc.

I recently took a standardized test in a large college auditorium. The test left me with over an hour of free time in which I was not allowed to read, talk, or do anything to pacify my mind. I utilized this opportunity to take a quick nap. I transitioned, vibrations and all, into a lucid state. I was still, however, able to hear every cough in the room, along with the air conditioning system, pencil scratches, etc. After about 15 minutes, the proctors called a stretch break. I heard this free of distortion, as if I was awake. Considering how I wanted to stretch, I woke myself seamlessly. Of all the Lucid dreams I have, these dominate. It is a very strange experience, akin to the most powerful psychedelics I have sampled.