As described there - very plausible. Sub-sonic frequencies may cause a person to become sick, and some that are low enough (assuming pretty good volume and prolonged exposure) may cause insanity. It was an interrogation method used during WWII but USSR and German military.
Making you sick and unable to eat much next day - clearly not the worst scenario...
It's not the noise canceling, it's just Bose! What do you expect from them?
Just kidding, just kidding. Honestly I always feel a bit disoriented/strained while wearing noise canceling phones, so I can understand how it's possible. Plus every one has a different body, so they can react differently to the same discomforts. Personally I like open 'phones, so I just can't adjust.
Granted, I only use my gf's phones right now.
She has a nice collection. I'm in the market for the AD700's personally, which would be my first pair of 'real' cans.
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