>>533900795
For me it is visual rather than auditory. I can be beginning to fall asleep and be blinded by a brilliant white light. Nothing external causes it, it comes entirely from inside because if I were to open my eyes I am still in a completely dark room. I think I have caused it myself a few times, in that halfway state between awake and falling asleep I remember deciding to look into something that I knew would be bright and got blinded again. Most of the time I have no control over it, I just end up getting blinded without any rhyme or reason.