I have been experimenting with a new kind of listening over the last year.
For reasons partially, but not completely, clear to me I am finding that my ear has developed a kind of threshold. This threshold is not just volume oriented, it is also information oriented. Once I cross this threshold my ears shut down -- both internally and externally. Meaning that not only does my inner ear shut down and I cannot bear to listen anymore, but my physical ears don't want any more sound either. They kind of stuff themselves up.