One more comment Matthew: I would note that David Jacobs, a professor, author, and hypnotic regression therapist (yes, I know -- this would automatically disqualify his research for those who believe hypnosis per se is illegitimate), who has worked with alleged abductees for decades, has had some of his clients use cameras in attempts to capture footage of an abduction. Here is what he has written on that:

"So far, no abductions have been videotaped. Rather, tapes reveal people getting up and inexplicably turning off the VCR, or unusual power outages during which the camera turns off, or the camera simply goes off mysteriously."

(In an interview, Jacobs also states that some of the footage involves the camera turning back on and showing the person in the bed, asleep. How they would have gotten up, turned the camera on, and gotten back in time before the film resumed isn't clear)

Besides this -- and I know this treads into the realm of the too-bizarre for many --, some abductees allege that their abductors have retaliated against their use of the cameras with sexual harassment and/or threats of physical harm to them and their families, should they continue to make attempts to detect the abductors' presence.

I do believe that a wide scale, scientifically controlled experiment using these means should be employed, but, like so many other experimental ideas, it is based upon an ideal situation where the abductees, some of whom are scared for their lives, agree to the plan, and the scientists exist in a political, economic, and ideological reality wherein taboo material can be scrutinized using the fullest means of testing available.