Comment What about the "Midas Effect" ... ? (Score 4, Interesting) 22
There is research work from the 1980's & 90's on the use of eye tracking for UI. Eyes tend to naturally scan around a scene - when the user becomes conscious that their gaze will 'affect' control regions in the UI they try to restrict this natural eye movement and it yields an uncomfortable sensation known as the 'Midas Effect'. This is mentioned and cited in this more recent paper: Real-Time Eye Gaze Tracking for Gaming Design and Consumer Electronics Systems
Sorry I'm too lazy to extract the original citation