When women faked orgasm, the cortex, the part of the brain governing conscious action, lit up. It was not activated during a genuine orgasm……
For men, the scanner tracked activity at rest, during erection, during manual stimulation by their partner and during ejaculation brought on by the partner’s hand.
Holstege said he had trouble getting reliable results from the study on men because the scanner needs activities lasting at least two minutes and the men’s climaxes didn’t last that long. However, the scans did show activation of reward centers in the brain for men, but not for women.
I’m not going to touch this one.