One study, for instance, published this month in the journal Evolution and Human Behavior by the Kinsey Institute psychologist Heather Rupp, uses magnetic resonance imaging to show that, during the hormonal shifts of ovulation, certain brain regions in heterosexual women are more intensely activated by male faces with especially masculine features. That receptivity element. Chivers has tried to eliminate this explanation by including male-to-female transsexuals as subjects in one of her series of experiments one that showed only human sex. Testosterone, so vital to male libido, appears crucial to females as well, and in drug trials involving postmenopausal women, testosterone patches have increased sexual activity. The ravisher is so overcome by a craving focused on this particular woman that he cannot contain himself; he transgresses societal codes in order to seize her, and she, feeling herself to be the unique object of his desire, is electrified by her own reactive charge and surrenders.
In women, though, the main difficulty appears to be in the mind, not the body, so the physiological effects of the drugs have proved irrelevant. How many could be done by all the sexologists in the world who focus on female desire, whether they were wiring women with plethysmographs or mapping the activity of their brains in fM. Invalid email address. Males who identified themselves as straight swelled while gazing at heterosexual or lesbian sex and while watching the masturbating and exercising women. All was different with the women.
