What do you do for a living? <a href=" http://www.catenn.org/valtrex-500-mg-posologie.pdf ">500 mg valtrex</a> Researchers looked at data gathered on 52 adults -- 13 women and 39 men -- who had reported repetitive sexual activity that was problematic in their lives. They then used electroencephalography, or EEG, to measure responses in the part of the brain that controls reward and emotional response.