>  BM> I do occasionally get a persistence of a sound actually heard; I
 >  BM> sometimes have to stop up my ears to determine whether I'm actually
 >  BM> hearing a noise or not.

 >  That's a head noise. The URL explains what they are.
 > Ever get hit by
 > a softball? Bonked your head on something? For an
 > instant you may see flashes
 > of light/and a 'tone' sound in your head? Those are
 > quite real.

Certainly they're "real," but the point is that I am sometimes
not aware that it is a head noise; rather, I am under the impression that I
am hearing an actual externally generated sound.

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