And I'm speaking strictly of the types that are used in the scientific tests on test patients. Or a video that shows the subjects being tested. I am so sick of trying to find authentic works and running accross stupid screamer videos. I am not trying to test anyone, I am just curious as to see how they work, and if they work, and what kind of videos and tapes were used when it was being tested. And if Placebo tapes or videos had been used as well.