As interesting as the video is, there are some fatal flaws in the design of the experiment. The first, and possibly most important point is this:

"..a woman stimulated herself inside an fMRI machine."

The reason that is so critical is because, since the stimulation was 100% self generated in an environment that could hardly be described as stimulating, a lot of the brain activity they are seeing is probably being generated by a mix of memory and fantasy that the woman is using to stimulate herself in addition to whatever physical method she is using.