I have no diagnosed mental illnesses, I do not use any medication, and I have no brain injuries whatsoever.

That's out of the way, at random times that do not seem to be connected to what am I doing or how am I feeling, my head starts to get very dizzy and I cannot speak or even hear what other people are talking, I basically zone out and can almost hear random thoughts in my head, almost words, but mostly just random things that I've maybe been thinking about or heard before, somewhat similar to a radio, nothing thematic, nothing bad or good, simply random, not always it is clear sometimes it's only the ringing in the ears almost similar to pressure, or a static sound that the television does when it's not on a channel. It lasts 20-40seconds and there are no other symptoms. Does anybody have any idea what this might be?