Sleep and meditation I'm a spiritual and somewhat crazy person, and have been taught both zen and samatha meditation, though I rarely practice either.

I just underwent a series of short micros sleeps, which were accompanied by musical hypnagogic hallucinations. I've had both experiences many times, but never together - and it was the closest thing I can imagine to the "sound of one hand clapping".

I felt sleepier, stopped fighting, right after I closed my eyes would hear someone singing, and then immediately seem to wake up again. This process repeated itself some four or five times, until I stopped being amazed by it (see the first paragraph) and just fell asleep (- until now).

Do any sleep experiences, like hypnagogic hallucinations, micro sleeps, or even sleep paralysis, or anything else, have anything to do with meditation? It strikes me as one way that science might come to terms with the states associated with meditation.
I have.  The hypnagogic/hypnaponic state is known for the interesting and even intense phenomena that can arise.  Here's my most vivid experience:


  I woke up one morning, paralyzed.  This happened before (sleep paralysis), and I knew it was a symptom of the hypnagogic/hypnaponic state. Well, I had recently read a book on out-of-body experiences (OBE), and it stated that I should simply will myself to lift out of my body.  So I did.
  
  I then felt a buzzing sensation up and down my body that grew to a
  fevered pitch.  It was INTENSE.  Then I felt myself lifting out of my
  body, with a static-electricity-like sensation at every point I exited. Then I
  saw the ceiling coming closer through CLOSED EYELIDS.
  
  I was terrified, so terrified I wanted back in.  I ended up
  snapping back in, and literally shivered myself to sleep.
  
  Then I woke up again, and heard strange music.  I never heard this song
  before, but the voice sounded like Sinead O'Connor's.  I then felt the
  buzzing again, like it was a spontaneous OBE.  I fought it hard, and
  it stopped.


The above was very vivid, more vivid than my waking experiences.  I chalk it up to the hallucinations (or lucid dreams) possible from this state.