Interview with her on Smithsonian.com. Excerpt:
What do you need to "escape" from?
At heart, I'm an anthropologist. I try to jump out of my skin. I normally see the world as an artist first, second as a New Yorker and third as a woman. That's a perspective that I sometimes would like to escape. It's why in my performances I use audio filters to change my voice. That's a way to escape as well.
To become somebody else?
Yeah, to have another voice. If you sound different you find that you have different things. If you sound like (high voice) a little kid or (low voice) you sound like a guy that's just sort of lost. It's just a way to switch perspectives and that's really important to me.
And if you read the interview, you'll see that she became the first artist-in-residence at NASA. I don't imagine we're in line for that gig.