"By flipping the channels in an audio piece you are familiar with, could the brain be more preoccupied with trying to the push the left back into the right channel? The relatively small imperfections,"
Interesting idea. Yes I tried it with music Im not terribly familiar with. The drum issue is funny because some drummers are left handed....
I was a professional drummer for some time and I always notice the reversed drummer, but as I mentioned it is true with unfamiliar pieces. The sound is quite specific too, doesn't sound like being out of phase.
An example I found in a familiar piece was that the bass lines went way back in the center image, very quiet, which would happen if it were out of phase, but it was different, it was physically farther back in the background.
Still the make question is why? why not just a mirror image.
Your Idea makes a lot of sense but it does happen with unfamiliar pieces.
T