There is a lot of 'informed' rubbish here.
Try putting breathing 100% oxygen after a couple of hours in cruise at night and look out of the window. From a black hole the scenery changes to millions of stars! Obviously the lack of oxygen affects the brain especially if the packs are on recirc.....
Used to suffer migraines but only on long high altitude flights - get stuck below Nat tracks and the symptoms disappear.
Even as SLF I can feel the effects.
Roll on the Dreamliner with fresh air.
Similar effects flying sailplanes over 10000 ft.
Last edited by blind pew; 12th Aug 2012 at 09:53.