I think I'd get claustrophobic

Two divers are going to live underwater for 10 days, entering a special dry chamber every five hours to take care of business but otherwise living life like fish. I love how Reuters ends the article:

Asked what she would miss most, Mensa exclaimed: "The telephone. No, I'll miss everything a bit".

After some thought, she said: "The ground and the air".

Will they be able to tell if her brain function is affected?