Hey!

Recalling yesterday's haiku post...

Sex on the brain: it's on the nose
By Ian Sample, LondonMay 10, 2006

Sex pheromones, the chemicals some scientists believe waft off the body to help attract sexual partners, are processed differently in the brain depending on our sexuality.
Scientists have found that a potent chemical lurking in male sweat causes a rush of electrical activity in the brains of straight women and gay men, while lesbians and straight men treat it like any other odour.
Ivanka Savic, a neuroscientist at the Stockholm Brain Institute who led the study, said the finding suggested that specific brain circuits were engaged when people were exposed to chemicals they found sexually stimulating. The scans did not reveal whether sexual behaviour was learned or hard-wired.
Three groups of 12 volunteers, including lesbians, heterosexual women and straight men, were asked to sniff a variety of odours. They included odourless air, four common scents and androstadienone, a chemical abundant in male sweat and suspected of acting as a male pheromone.

GUARDIAN
(cut and pasted from www.theage.com.au)