Sleep study...or something else???

While riding in the car during the last week or so, I've heard a commercial on the radio that I have to comment on. The commercial is for a clinical sleep study that is being conducted and is looking for participants. The requirements for participation are that a) you can fall asleep, b) you have trouble staying asleep through the night, and c) the disruptive nights are having an affect on your daily life. The commercial goes on to say that you'll be given medication and may be eligible for money for travel or other expenses.

Now, I've heard several ads similar to this before that were looking for research guinea pigs...I mean participants. So there is nothing strange here.

However, the commercial continues. It goes on to describe the doctor in charge of the study, whose name I cannot recall. The doctor is a certified gynecologist. That’s right, a gynecologist.

Which leads me to the question, what the hell is a gynecologist performing a sleep study? It just strikes me as weird (and creepy in a sense), and leads me to wonder what the hell they're going to do to you once you take the medication and sleep through the night while at the study. (Actually, it makes me think it's the beginning of a bad and dirty joke...)

I could take this in so many different directions, but I'll hold off and just repeat the basic question for all to ponder----what is a gynecologist performing a sleep study?