Of course, there's the issue of all their participants being the type of women who can manage to have an orgasm in an MRI machine while being closely watched by a squadron of (likely male) scientists, or, at very least, a female technician. I've been in one of those things (an MRI, not a female technician), and while it was interesting, there was definitely no aura of bow-chicka-wow-wow about. Perhaps they filled the lab with little floating candles, unreasonably thick folded towels, and flowers?
I mean, as a man, being inside a close-fitting tube is really the name of the game, but this is really not the embodiment I'd seek out. And I'm really not sure that one male tech would be any better than a bunch of female scientists. For that matter, I'm not sure whether it would be better or worse if they were very attractive...
...which brings up another point: How many of the subjects had boyfriends / husbands? How do you go about introducing it?
W: So, I'm going to one of those science study things...
M: A what study-things?
W: You know, the science studies, like where they put you in a room with three people and ask weird questions, or they have you breathe into a tube to measure something or whatever.
M: Oh, cool. What's yours?
W: I'm going to lie in a tube and masturbate 'til I come.
[ Prolonged silence ]
W: ... I get paid like fifty bucks...
[ Prolonged silence ]