Don't know about pictures or activity of male brains during sex but I found this very funny picture of how men and women's brain works during an argument, I hope u'll laugh like I did
funny my first time with a guy he didn't fall asleep right after lol in fact once he recovered enough and after a bit of snuggling we had another round at it lol
I have baby, I've even whipped my older brother (but as stated in another post by Janine, a good dom doesn't do anything that hasn't been done to her, so he whipped me too, and he hit harder, OUCH :'( )