Take a good look at this, fellas:
It might not look like much, but this is science's very first glimpse of something rather close to the hearts of most men.
These images show nerve activation in the spinal cord during sexual arousal. Using functional magnetic resonance imaging (fMRI), best known as a way of recording brain activity, applied to the spine, Canadian researchers Kozyrev et al were able to record the changes associated with, well, stimulation. Here's the paper: Neural correlates of sexual arousal in the spinal cords of able-bodied men. The methods sound like a real riot. Ten guys were scanned while being exposed to two different kinds of stimulation. First, 'audiovisual'
Films, depicting heterosexual couples engaged in sex play, vaginal sexual intercourse, and oral sex, were presented in two 5-min blocks, separated by a baseline condition (blank screen) for 3 min... The selected films were chosen by the ...
