Flutterby™! : Brains & orgasm

During women's orgasms the portions of the brain controlling fear and anxiety are apparently switched off:

"The fact that there is no deactivation in faked orgasms means a basic part of a real orgasm is letting go. Women can imitate orgasm quite well, as we know, but there is nothing really happening in the brain," said neuroscientist Gert Holstege, presenting his findings Monday at the annual meeting of the European Society of Human Reproduction and Embryology.

The lack of results for changes in men kind of leaps out, but is answered further down the article:

Holstege said he had trouble getting reliable results from the study on men because the scanning machine needs activities lasting at least two minutes to record an activity. But the men's climaxes didn't last anywhere near that lone, meaning he could not reliably compare the scans before climax and during.

Prof. dr. G. (Gert) Holstege seems to have some other interesting publications that'd be worth tracking down.