Are you sure it's just during orgasm? And who fucking participates in these "studies" anyways?
COPENHAGEN, Denmark - New research indicates parts of the brain that govern fear and anxiety are switched off when a woman is having an orgasm but remain active if she is faking.
In the first study to map brain function during orgasm, scientists from the Netherlands also found that as a woman climaxes, an area of the brain governing emotional control is largely deactivated.
http://news.yahoo.com/s/ap/20050620/...x_in_the_brain