From SciAm website:

…demonstrated that the observers attended to the naked picture but not to its scrambled counterpart. Even more interesting, straight males attended to pictures of naked women but were slightly repelled by pictures of naked men. Straight women were attracted to pictures of naked men without showing a consistent repulsion for pictures of naked women. Gay men behaved much like straight women; they unconsciously paid attention to the pictures of the naked men but not to those of women…

The article is VERY insteresting. It describes an experiment made with a technique that renders invisible images that our eye is seeing, through a series of flashes. It has nothing to do with the Romulan cloaking device, it’s only a technique to fool our brains.