“But this recalibration, this heightening of our lowest levels of perception, leaves us calmer and less anxious. It scrubs the brain of the stress-inducing noise we live in, according to Orfield. “People go into the chamber and come out saying things like ‘My brain hasn’t felt this good in years,’ ” he said. “We had someone who was on an aircraft carrier in the Middle East. He could still hear the planes taking off. He went into the chamber and afterward the noise was gone. It had reset his hearing back to zero.” Orfield’s anechoic chamber has since been named the quietest place on earth by Guinness World Records. Extreme quiet is a promising treatment for people who’ve gone through trauma, particularly vets suffering from PTSD. When he retires, Orfield plans to flip his lab into a nonprofit that will be used for therapy and research. It’s probably not feasible to lounge in Orfield’s lab.”