She sits in the chair with the television just a few feet away. Her left hand is free; her right hand holds a lever that can be forced forward, like the throttle on a motorboat. A probe about four inches long is sitting in her vagina, attached to a clear cord that dangles between her legs like a plumber's snake.
As the viewer gets turned on, she pushes down on the lever. The tampon-shaped probe between her legs shines a light, and then measures how much of it is reflected back. As she gets excited, the blood starts to pulse. The dark fluid flows in and the vaginal photo-plethysmograph picks up less and less light.
OK-this is in the name of science. There have been stunning advances in neurobiology in terms of mapping the active regions of the brain during various activities. These techniques include positron emmission tomography (PET) and functional magnetic resonance imaging (MRI) scans. They've been used to study people's brains while speaking, doing math problems, even thinking spiritually.
Here's the question I'd like to know the answer to. What do men's and women's brains look like with these techniques when they're having sex? All right, technically tough to do the real thing, but why not masturbating? Are their brain activities similar or different? What happens during orgasm?
Inquiring minds want to know, even though you probably can't get an NIH grant for these studies.
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