I'm actually pretty noise-sensitive (It's kind of a weird thing for a DJ to have.), and I do need quiet from time to time. I really do value silence.
I can envision things, I guess, but it's all word associated I actually have a hard time seeing pictures in my head. So for instance, just to test this, I sat down and tried to envision an apple and had a really hard time bringing the picture to fruition in my head. I had to describe it using words and didn't really get a picture in my mind. But I can remember what an apple is like when I think of the words like round, juicy, crispy, sweet with a hint of tart.